91社区

Description

The student will work on laboratory experiments in nonlinear dynamics and in elaboration of experimental results.

Tasks per student

Work on experiments after training

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Number of positions

1

Academic Level

Year 3

Description

In the fight for climate change, an energy transition from fossil fuels to renewable fuels is necessary and urgent. The aluminum-water reaction has been proposed by 91社区's Alternative Fuels Laboratory (AFL) to produce hydrogen, water, and heat, which can be used directly in heat engines to produce mechanical or electrical energy. This reaction produces a clean carbon-free fuel that can be recycled, and thus not participating in global warming. The use of metal as an energy carrier has the advantage of greater energy density, with a similar specific energy to fossil fuels. Once used, the metal can be recovered, recycled and reused with minimum losses, avoiding the extraction, transportation and processing of additional raw material. The production of hydrogen through this technique provides a self-sufficient and ideal solution for power generation in remote areas. While the metal-water reaction addresses the problems of transportation and storage, the implementation in gas turbines remains challenging. An experimental study of hydrogen-steam combustion must be conducted in order to evaluate the integration of such mixtures in practical engines. This project consists in the development of a steam generation system to be integrated on an experimental combustion apparatus. The student must be interested in working in a laboratory. Please contact Marie Meulemans for project information and to apply. [at] mail.mcgill.ca>

Tasks per student

The student will refurbish a water atomizer, coupled with a heat generator, and implement it in a stagnation flame burner.

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Number of positions

1

Academic Level

Year 3

Description

Metallic particles in suspensions can serve as a clean energy carrier, which is burned in a reactor to produce energy without carbon emissions. The powder can then be collected and recycled back into its pure metal form thanks to renewable energy sources. Despite the potential offered by flames in metallic suspensions, many fundamental questions, which are key to our understanding and to the design of functional industrial burners, remain unresolved. The research conducted by the Alternative Fuels Lab examines the complex physics of burning suspensions both from an experimental and a theoretical (computational modeling) perspective. Contact Jan Palecka (jan.palecka [at] mail.mcgill.ca) for the position with a focus on the experimental work and XiaoCheng Mi (xiaocheng.mi [at] mail.mcgill.ca) for the projects based on computational modeling.

Tasks per student

Two students are expected to perform experimental lab work and/or theoretical analysis related to experiments. The analysis may be performed on MATLAB or similar software. One or two students are expected to contribute towards developing a computational modeling framework for metal-fuel combustion. Some basic knowledge in numerical analysis and programming (in C++ and/or FORTRAN) is required for carrying out the computational tasks.

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Number of positions

3

Academic Level

Year 3

Description

Combustion-based technology will maintain a prominent position in the energy sector for the near future. Alternative fuels, low-emission technologies, and a greater understanding of combustion physics are required to mitigate the impacts of climate change. Hydrogen has been proposed as a carbon-free alternative to current fuels but has not been adopted yet because of multiple challenges with its production, storage, safety, and transportation. Ultimately, the use of hydrogen in the energy sector will be determined by the competitiveness of its entire production cycle. This project aims to quantify the cost of energy production from hydrogen combustion to compare it with current environmentally friendly technologies. This preliminary feasibility study should provide a better idea of the amount of hydrogen required to achieve similar power output as current methods and identify bottlenecks in the implementation of a hydrogen economy. Simplified cycles and combustion models will be used to perform the analysis. Contact Antoine Durocher: antoine.durocher [at] mail.mcgill.ca to interview for position.

Tasks per student

Calculate the cost of energy production using hydrogen fuel to compare it with other carbon-free technologies and evaluate the feasibility of developing a hydrogen infrastructure.

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Number of positions

1

Academic Level

Year 3

Description

A shift towards the use of renewable energy is necessary to fight climate change. Existing studies have concluded that it is possible to transition to an energy system that relies solely on wind, water and solar primary energy. However, solar energy in the Canadian context is not well understood. Specific challenges such as seasonal variability and extreme temperatures have not been closely examined. This project aims to estimate the amount of solar energy available in Canada and model its variation on a daily and seasonal basis. This type of study is necessary in order to gain an understanding of how solar energy could be integrated into the Canadian energy landscape and the infrastructure needed to support such a shift. Contact Keena Trowell: keena.trowell [at] mail.mcgill.ca to discuss, and apply for, this project.

Tasks per student

Review literature regarding solar resources available in Canada, relevant technologies and estimate Canadian solar capacity (including seasonal variability) as well as cost.

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Number of positions

1

Academic Level

Year 3

Description

3D printing offers 鈥渄esign freedom鈥� for engineers to build geometries that cannot be fabricated by any other means, creating functional parts without the need for assembly, and tailoring the weight, shape and strength of parts. Direct-ink-writing (DIW) is a major 3D printing technology where liquid-based ink is dispensed out of a small nozzle under a controlled flow rate into 3D structures layer-by-layer. In this project, a student will be mentored to design and assemble a novel DIW 3D printer tailored for the transformation of raw graphite materials into advanced graphene nanocomposites for space applications.

Tasks per student

Develop an understanding of how DIW 3D printing/printer works Design appropriate components to interface with existing x-y-z actuation platforms to make a DIW 3D printer Fabricate or select commercially available components to assemble a functioning DIW 3D printer.

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Number of positions

1

Academic Level

Year 3

Description

The candidate will join a team of grad students and work towards supporting the activities of a virtual reality surgical simulator.

Tasks per student

The student will be charged with creating a valid analogue surgical tool that will be adjoined to a haptic feedback device driven by a physics based augmented reality surgical simulator. The task will involve getting specification for real analogue, creating technical drawings of the tool, and producing and testing/validating the surgical tool on the simulator with feedback from surgeons.

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Number of positions

2

Academic Level

Year 3

Description

Student will work in lab to measure experimentally soft tissue mechanical properties with novel tool and conventional mechanical testing.

Tasks per student

Muscle tensile properties will be analyzed using a mechanical tester and then compared to data from a novel tool to measure tissue modulus in a non-invasive manner. This study builds on data from in Vivo and cadaver in data. This final validation experiment will serve to support the accuracy of this clinical tool. Student will be guided by experience lab technician.

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Number of positions

1

Academic Level

Year 3

Description

Vehicles that are able to autonomously move in the air, on the ground, or underwater must fuse various forms of sensor data together in order to ascertain the vehicles precise location relative to objects. This process is called navigation. Typical sensor data includes inertial measurement unit (IMU) data, and some sort of range data from an optical camera or time of flight sensor (e.g., ultra wide band radio, LIDAR). The SURE student(s) will focus on sensor fusion for the purposes of robot navigation. Specifically, the student(s) will likely work on one of the following sub-projects: monocular camera based navigation for ground robots, navigation using a magnetic field map for a team of ground and/or aerial robots, marine robot navigation, autonomous train navigation. Students best fit for this position are those interested in using kinematics/dynamics, linear algebra, probability theory, and numerical methods, to solve real-world problems found in robotics. Comfort with python/matlab/C++ programming is desired. Depending on the student's interest and/or experience, the students may work more with data and hardware, or more with theory. Year 2 and 3 students will be considered (that is, students who have taken MECH 309 or equivalent.)

Tasks per student

- Formulate and solve the research problem (with assistance from Prof. Forbes and DECAR systems group members). - Write code to test the algorithm in a simulation. - Test using simulation and/or experimental data (if available).

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Number of positions

3

Academic Level

Year 2

Description

We consider a microfluidics based portable device that removes contaminates from water based on turbulent microfluid dynamics and reaction kinetics. We have developed some basic computational models for optimizing the dimensions of the microchannels of this device for a first feasibility study. This project will enhance these models and conduct more elaborate computational design optimization studies.

Tasks per student

Enhance and extend the computational models of the microfluidics device Conduct optimization studies

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Number of positions

1

Academic Level

Year 3

Description

Sandwich panels constitute about 90 percent of cabin materials in conventional airplanes. These sandwich panels are normally made of NOMEX honeycombs and fibreglass, which are materials that are difficult to recycle. The objective of this project is the design, fabrication, and assessment of sustainable sandwich panels that can be implemented in aircrafts. The project focuses on replacing the honeycomb core material with a 3D-printed recyclable core and solutions to replace the current face sheets.

Tasks per student

The student will be involved mainly in the design and manufacturing of new structures using 3D printing and composite material manufacturing techniques.

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Number of positions

1

Academic Level

No preference

Description

Wind Turbines are supposed to provide clean energy but there is a problem with what to do with tons of fiberglass at the end of the turbine's useful life. This project proposes solutions to recycle the fiberglass from wind turbines and convert the waste material into material for use in 3D printing. A sustainable solution is under research in the Structures and Composites Lab.

Tasks per student

Compatability of recycled fiberglass with different polymers for use in 3D printing is one of the main issues. The student will experiment with 3D printing of polymers with different grades of recycled fiberglass reinforcement.

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Number of positions

1

Academic Level

No preference

Description

Damage of Intervertebral discs (IVDs) have been proven to cause lower back pain. One of the major causes of IVD damage is the complex mechanical loading experienced during daily activities. This complex loading includes axial compression, torsion, flexion, extension, and lateral bending. To understand IVD damage and develop effective treatments, ex vivo culturing of the entire disc organ using bioreactors are in high demand. Though the effect of static and dynamic axial compression has been studied extensively, little is known about the biomechanical response of the disc under the condition of dynamic complex loading. Due to this fact, it is necessary to develop an IVD bioreactor capable of applying these complex load cases. This project aims to develop a new organ culture loading system with high loading accuracy and resolution. The loading system is expected to consist closed-loop control, and the culture system is necessary to include culture media and gas exchange. The performance of this bioreactor will be further validated in an ex vivo study of bovine IVD and will be later incorporated with cell-laden hydrogel to study the effects of dynamic biomechanical environments on cellular functions.

Tasks per student

Electro-mechanical design and testing

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Number of positions

1

Academic Level

Year 3

Description

Cell therapy, in which cellular materials are injected or implanted to patients with limited regenerative capacity to instruct and facilitate local tissue repair has emerged as an exciting technique for enhanced tissue regeneration. Hydrogels with highly defined and customizable tissue-mimetic mechanical, chemical and biological properties are one of the most promising candidates for this purpose. A better understanding of how hydrogel material mechanics could affect cellular function would provide valuable instructions for the design and development of biomaterials as mechanically and biologically functional scaffold for advanced cell delivery and therapy. In this project, we will design alginate hydrogels with different mechanical properties (including stiffness and viscoelasticity) and investigate how these mechanical stimuli could influence cellular behaviors. The cell-laden hydrogel will be later incorporated within a bioreactor with dynamic loading functions to study the effects of dynamic biomechanical environments on cellular functions.

Tasks per student

Biomaterials synthesis and mechanical testing; cell culture; microscopy; cell marker staining and analysis; interdisciplinary collaborations with engineers and biologists.

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Number of positions

1

Academic Level

Year 3

Description

Deployment of a full space elevator involves many challenges that cannot be solved using current technology. However, a partial space elevator can be deployed now if certain dynamics and control issues are addressed. An arbitrary deployment scheme will lead to instability; so a stable deployment scheme must be devised. The proposed project will develop a mathematical model to study the dynamics and control issues associated with the partial elevator deployment process. Numerical simulations based on the model will provide insight regarding feasible deployment schemes.

Tasks per student

The student will develop a mathematical model associated with the dynamics of a partial space elevator. Computer simulations based on the mathematical model will be carried out.

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Number of positions

1

Academic Level

Year 3

Description

Injectable vocal fold fibroblasts (VFF) loaded alginate microspheres (Al) have shown great promise in delivery of pro-healing cytokines and growth factors to damaged vocal fold lamina propria. As a material, ionically crosslinked alginate hydrogel is popular in the field of tissue engineering for its biocompatibility, mild gelation, slow degradation, and tunability to mimic properties found in natural ECM. However, alginate lacks adhesion ligands for mammalian cells, which may impair their ability to secrete the pro-healing cytokines and growth factors. The project connsists of modifying existing alginate microspheres with synthetic RGD peptide (Al-RGD) so that the alginate scaffold may enhance cell adhesion and fibroblast growth factor (FGF) and IL-4 production. Immunofluorescence of cytoskeletal components will be used to compare cell adhesion and morphology of VFF in Al and Al-RGD microspheres through vimentin, tubulin and F-actin markers. ELISA kits will be used to evaluate the FGF and IL-4 production during 24h, 48h, 7 and 14 days. MTT assay will be used to compare cell proliferation and metabolic activity between the two different microspheres configurations.

Tasks per student

One student will be recruited to perform all the above-mentioned tasks: cell culture, RGD peptide synthesis, assays, microsphere fabrication, and confocal microscopy. The student will be mentored by a Ph.D. student in Bioengineering (Alicia Reyes).

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Number of positions

1

Academic Level

Year 2

Description

The project consists in using commercially available click chemistry to design new fast curing hydrogels for in situ wound filling. The gel is delivered endoscopically on site using an endoscopic needle and a microfluidic device.

Tasks per student

Student 1: hydrogel fabrication, mechanical characterization Student 2: cellular response Student 3: q-PCR gene expression analysis

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Number of positions

3

Academic Level

No preference

Description

For surgical training, virtual surgical planning and numerical model validation, reproducible synthetic arterials mockups (phantoms) are needed. These models need to replicate the mechanical properties of native tissue (hyperelastic, anisotropic, heterogeneous). The large deformation, the layered structure and pathological degradation of the vessel need to be mimicked. In this regard, we initiated the development of anthropomorphic tissue-mimicking mockups (TMM) that exhibit the major mechanical, anatomical and pathological characteristics of vessels. The TMM is made of a cryogel, polyvinyl alcohol cryogel (PVA-C), which has excellent biocompatibility and is suitable for imaging modalities. By varying the parameters during cryogel fabrication, it possible to tailor the mechanical strength of PVA-C to that of human arteries. The project aims particularly and the incorporation of synthetic pathological features (stenoses, aneuyrysms) to mimic diseases.

Tasks per student

The candidate will help in fabricating the complex anatomical structure using 3D printing, characterizing the mechanical properties of the synthetic vessels and pathological conditions and testing under realistic physiological conditions.

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Number of positions

1

Academic Level

No preference

Description

Implanted medical devices (stents, heart valves, heart pumps) are usually coated for releasing medical compounds to control thrombogenesis (blood clots) and inflammation. Current coatings technologies rely on polymer carrier (porous or in solution). These are associated with limitations (toxicity, carrying capacity) which restrict its use to certain conditions. We developed a new paradigm for drug elution based on carbon nanotubes (CNTs). The concept is to generate a controlled density and intertwined structure of CNTs to achieve entrapment of the chemical compound (in analogy to a carpet structure). Preliminary results have shown the potential of the concept for controlled retention and release of a drug compound, The objective is to design optimize a nano-coating using CNTs on various metallic substrates and assess their efficiencies for controlled drug release.

Tasks per student

The tasks include participating to the coating production, chemical compound absorption and characterization of the release kinetics.

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Number of positions

1

Academic Level

No preference

Description

The project consists of designing a low-cost yet efficient mechanical ventilator for use in localities where modern conditions of steady reliable electric grid is not available. The ventilator must be compact and must not require electricity. The device should utilize any energy source readily available such as human power, water current, wind, etc. The main challenge is to design the product with high medical standards while maintaining a flexible range of operation to minimize adverse effects of mechanical ventilation. The technology aims at combining Zeolite materials to enhance O2 concentration and exploit the ventilator rotor concept to generate the needed conception. The Capstone project aims at developing further concepts, optimizing and testing the design for the target operating regime (0-40 cmH2O, up to 1000 ml, respiratory rate 4-45 bpm, flow rates 0-100 lpm).

Tasks per student

The candidate will help in designing parts of the new ventilator, prototype and test the ventilator efficiency.

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Number of positions

1

Academic Level

Year 1

Description

Design of aerodynamic surfaces using high-fidelity approaches have typically been demonstrated through gradient-based optimization techniques for their lower computational cost but these approaches can only guarantee local optimum solutions. Traditional artificial intelligence using genetic algorithms and/or surrogate modeling based neural-network techniques have not been able to compete non only in terms of the lower computational cost of gradient-based techniques but these approaches have not been able to realize global optimum solutions that are superior to gradient-based approaches. Both approaches have been employed and compared within the computational aerodynamic design community for a series of benchmark aerodynamic design cases in the past with inconclusive results. The objective of this summer research project is to revisit this research problem and systematically establish a comprehensive comparison between the approaches.

Tasks per student

Student 1. The summer student will employ common approaches in neural network techniques and couple the code to our in-house computational aerodynamics analysis and design code. The student will then compare the approaches for a standard series of benchmark problems and identify their strengths and weaknesses. Student 2. The student will develop a low-order nonlinear model based on model-reduction approaches to provide functional values.

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Number of positions

2

Academic Level

Year 2

Description

Traditional CFD programs rely on what are known as low-order methods. These are methods defined to have a spatial order of accuracy, the rate at which the error of the numerical solution decreases as the mesh is refined, of at most 2. This low order of accuracy in turn results in the need for very fine meshes for obtaining accurate numerical solutions with low errors. The drawback, however, is that solutions on these fine meshes are accompanied with very high computational costs. This impediment caused by the order of accuracy of low-order methods has resulted into increased research into computational approaches known by, unsurprisingly, high-order methods. These methods allow for much higher spatial orders of accuracy, thus allowing the ability to obtain numerical solutions with low errors on coarser meshes. Several high-order methods have been the principal focus of research in the past years including the Discontinuous Galerkin method, Spectral Difference method and Flux Reconstruction approach. One complication that has plagued high-order and low-order methods alike, however, is the ability to interface easily with CAD geometries. To alleviate this issue, an approach known as Isogeometric Analysis (IGA) will be studied. This technique proposes the use of Non-Uniform Rational B-Spline (NURBS) basis functions, the same functions used in CAD programs to parametrize geometries, as the function space to represent the flow's numerical solution. In addition, applications of high-order methods incorporating IGA to aerodynamic shape optimization will be investigated. The scholar has incorporated an adjoint-based approach to compute the gradients required for shape optimization through a previous summer research. In this work, the focus will be on the introduction of NURBS.

Tasks per student

The summer scholar will work first on implementing IGA to numerically compute solutions to the Euler and Navier-Stokes equations by incorporating NURBS basis functions within a high-order Discontinuous Galerkin method flow solver. Studies will be conducted to check the numerical stability and effectiveness of the use of NURBS basis functions as a solution space as opposed to traditional polynomial function spaces.

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Number of positions

1

Academic Level

Year 2

Description

The Aerospace Mechatronics Laboratory houses a wide range of unmanned aerial vehicles, including quadrotors, gliders, fixed-wing and hybrid aircraft. The overall objective of our research is to develop platforms for a range of tasks. Example applications include gliders for wildfire monitoring and fixed-wing aircraft for autonomous acrobatic flight through obstacle fields. Two SURE students are sought with strong interest and aptitude for research in the areas of robotics, mechatronics and aerial systems. Depending on the status of the above projects, the student is expected to contribute to experimental testing of components and to flight tests with these platforms. In addition, the students will be involved with interfacing new sensors into the platforms, for the purposes of acquiring data and for closed loop control. Some programming experience would be useful for the development of a real-time hardware-in-the-loop simulation. The students are expected to assist with hardware interfacing, programming, conducting experiments, and processing the data.

Tasks per student

The tasks will be varied and could accommodate mechanical, electrical or software engineering students; but ideally someone with experience in all aspects. Tasks will include some interfacing of sensing hardware with microprocessors; programming; some CAD modeling; some Matlab/Simulink modeling; and finally, experimental testing.

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Number of positions

2

Academic Level

Year 3

Description

In a concept called Magnetized Target Fusion (MTF), a plasma is compressed to fusion conditions using a collapsing liquid cavity. The liquid must be rotating to form a spherical-like cavity but is initially injected from a stationary liquid injector, resulting in a complex flow. The formation and injection of the liquid, which compresses the plasma, is susceptible to fluid instabilities which must be understood and controlled. This project will examine the growth of instabilities on the liquid surface and explore mitigation strategies. -- Project done in collaboration with Prof. Higgins

Tasks per student

Student will develop diagnostic techniques (laser Doppler velocimetry, particle imaging velocimetry) to measure the magnitude of velocity perturbations in the fluid. Reduction and analysis of the data will be developed. The results will be compared to modelling predictions.

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Number of positions

2

Academic Level

No preference

Description

The increasing growth and popularity of multirotor vehicles has similarly seen an increase in the breadth and scope of their applications. In particular, the need to fly these vehicles near surfaces, or in the wake of other vehicles, has led to new challenges in predicting the performance of the vehicle/propeller. The project will explore some of these challenges.

Tasks per student

Project is broad in scope, so the applicant will have the opportunity to develop their own research plan. In general, tasks include: 1) Develop analytical model to account for change in propeller performance for given condition 2) Verify model against experimental data collected in the lab

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Number of positions

1

Academic Level

Year 3

Description

Systems in space are vulnerable to large temperature changes when travelling into and out of the Earth's shadow. Variations in temperature can lead to undesired geometry deformation in sensitive applications requiring very fine precision, such as sub-reflector supporting struts. To suppress temperature induced failures, materials with a low coefficient of thermal expansion (CTE) are generally sought over a wide range of temperatures. Besides low CTE, desirable stiffness, strength and extraordinarily low mass are other mechanical properties critical to guarantee. We are developing a novel class of materials with tunable coefficient of thermal expansion (CTE), low mass, besides high stiffness and strength, and capability to reversibly reconfigure their shapes. We are not moving into the implementation phase where several prototypes are being built and tested under a range of testing conditions. Various gradients of temperature are applied to test the robustness of the concepts so far introduced.

Tasks per student

The students will help graduate students in fabricating and testing proof-of-concept materials with tunable thermal expansion and reconfigurable characteristics

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Number of positions

2

Academic Level

Year 3

Description

Professor Sharf is working with FPInnovations on increasing robotics and automation in tree harvesting machinery. Several projects are being worked on by her graduate students. These involve a simulator of the machine which may require a number of improvements and modificiations, such as a realistic representation of the terrain and environment in which the machine is operating. In addition, work has been ongoing on integrating several sensors on the real machine. Currently, we are working on integrating two depth cameras on a real machine to enable collecting long-term data during operation. As well, we want to integrate one or several Inertial measurement units on the machine to allow us to quantify the machine's motion during operation. We are also working with FPInnovations directly to use the test-bed available at FPI in Pointe-Claire to allow us to testing different autonomy algorithms under development. The student would be involved in assisting with both the hardware and software development of the work of graduate students, jointly with FPI.

Tasks per student

1) Familiarize with existing models of machines in (in Matlab and Vortex Studio) and make improvements to the model; 2) Integrate real forest data into the model; 3) assist with hardware design and integration for sensors to be mounted on the machine; 4) assist with field testing, data collection and data post-processing.

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Number of positions

1

Academic Level

Year 3

Description

Professor Sharf's research group is working on several projects with unmanned aerial vehicles. In particular, research is ongoing on collaborative payload transport using several UAVs, the use of unmanned gliders for wildfire surveillance and control of quadrotors with bi-directional thrust. The research spans modeling and simulation of these systems, design and integration related to modifying commercial vehicles to meet the requirements of the projects, developing controller and state estimators and flight testing in the field. The student will be involved in different aspects of the research working jointly with graduate students to further the research.

Tasks per student

1) familiarize with project objectives, hardware and software available; 2) develop and integrate hardware; 3) assist with carrying out flight testing: preparation, execution and post-processing of data from flights; 4) assist with further development of supporting simulation tools

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Number of positions

1

Academic Level

Year 3

Description

Harnessing the Sun鈥檚 energy into a renewable, low-carbon heat source for power generation is the basis of solar thermal energy technologies. Concentrated solar power (CSP) plants use mirrors to concentrate natural sunlight hundreds to thousands of times, producing excess thermal energy during the day that can be stored at low-cost, and used during night-time operation to dispatch electricity 24/7. The Thermal Energy Laboratory is currently developing a 6.5 kWe solar simulator facility to conduct lab scale concentrating solar power experiments. In order to conduct experiments at variable solar flux intensities, the student carrying-out this project will design and build a 鈥渟olar curtain鈥� to control the intensity of the flux on a target. This work will involve carrying out raytracing simulations using commercial software such as SolTrace or TracePro, heat transfer calculations, and designing, building, and testing the curtain in the solar simulator facility. The student working on this project will be closely supervised by a graduate student and will also learn how to conduct high intensity flux measurements. Students must have taken MECH 346 (heat transfer) to be eligible to apply.

Tasks per student

-Raytracing and heat transfer calculations -Conceptual design -Building and testing

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Number of positions

1

Academic Level

Year 3

Description

This project will be jointly supervised by Professors Yaoyao Fiona Zhao and Jeffrey Bergthorson. The project aims to conduct a function-driven design analysis of the iron powder burner prototype following a design methodology developed for additive manufacturing process. Part consolidation and multi-scale design strategies will be applied to revise the current burner design for larger heat generation capability

Tasks per student

The student will learn the most up-to-date design methodologies related to part consolidation and function-driven multi-scale design. He/she will then apply the design methodology in the analysis and redesign of an iron powder burner developed at the alternative fuel lab. The function of the metal burner needs to be decomposed and feed into the part consolidation procedure to analyze part consolidation potential. Potential lattice design will be analyzed in the re-design process on its feasibility to improve burner capability.

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Number of positions

1

Academic Level

Year 3

Description

This research is being conducted as part of the project to investigate the process parameters involved in compression resin transfer moulding (CRTM) process with the use of highly reactive resins. Permeability is a key parameter to consider when studying the mould filling in CRTM process. It dictates the resin鈥檚 ability to flow through the dry fabric and influence the quantity of pressure required to fully impregnate the fibres with resin and obtain a high-quality part. In this Project the Student will be required to modify the existing transverse permeability testing jig. It will be followed by experiments to characterize and develop a model for different kinds of fabrics using the jig. Skills needed 鈥� A good knowledge on the properties of fibre reinforced composites 鈥� Must have basic experience or learn to work with LabView 鈥� Computer programming to interpret the results: python, Matlab or Excel 鈥� Good communication skills and a team player

Tasks per student

With the support of a PhD student and the Structures and Composite Materials Laboratory group, the student will be expected to: 鈥� Redesign certain components of the testing jig (outlet port, guide rods and Delrin sliders) 鈥� Create a system to measure the inline flow pressure for the inlet 鈥� Build an entire LabView code to control the stepper motor and calibrate the testing jig 鈥� Create a test matrix to characterize the permeability of different kinds of fabric. 鈥� Build a mathematical model based on the experimental data

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Number of positions

1

Academic Level

Year 3

Description

The research being conducted is to measure the mechanical response of dry and wet preform under compaction conditions. Flat plate coupons will be manufactured with compression resin transfer moulding process. Overall dimensional quality of the coupons will be analyzed under different manufacturing parameters. This is a short affordable process to produce composite structures for the transportation industry. The thermosets involved in this process are highly reactive, which involve thermal, fluid, and chemical phenomena all occurring in few minutes. In this project, the SURE recipient will be required to learn and use lab equipment and methodologies to measure the properties of the preform and the manufacturing of the coupons. Different process conditions will be used (e.g. mould temperature, compaction speed, final part thickness). A sensibility analysis of the process parameters will be performed.

Tasks per student

With the support of two Ph.D. (Thesis) students and the lab team: 鈥� Get trained in the use of the lab equipment and machines. 鈥� Measure the mechanical properties of the preform under compaction. 鈥� DOE to manufacture small coupons with different process parameters. 鈥� Sensibility analysis of the simulation results.

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Number of positions

1

Academic Level

Year 3

Description

Composite materials have been implemented with great success to reduce aircraft weight through their great specific properties, their mechanical tailorability, and their ability to reduce assembly part count. That being said, fabrication of composite aircraft structures through the use of pre-impregnated fabrics results in large amounts of uncured waste. This manufacturing waste presents an excellent opportunity for recovery and recycling. A novel recycling technique has been developed and patented at 91社区 to transform high-value aerospace composites waste into a versatile compression moulding compound. In this project, the SURE recipient will be tasked with aiding in the development and testing of a physical prototype based on this recycling method.

Tasks per student

With the support of a Master student(s) and the lab team: - Evaluate the performance of the recycling prototype through an experimental parametric study. - Develop best practice guidelines for the use of the recycling prototype and collaborate with other members of the group to manufacture demonstrator parts

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Number of positions

1

Academic Level

Year 3

Description

Composites are used vastly in the automotive industry and their application is constantly growing. These composites must be inexpensive, manufactured at high volumes, and have relatively good mechanical properties. The goal of this project is to investigate the effect of graphene on the composite鈥檚 performance. The graphene used here has low cost and will be integrated in the composite by mixing in the resin and different fibre manipulation methods. Firstly, the neat resin and nanocomposite are characterized, then, the graphene is added to the resin + preform to make the multiscale composite. A range of properties of the developed composites will be assessed while seeking new applications for them.

Tasks per student

1) Fabricating composite coupons 2) Evaluating the mechanical and electrical properties of the coupons

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Number of positions

1

Academic Level

Year 3

Description

One of the challenges in today's aerospace industry is the energy efficient and cost-effective manufacturing of low-volume components. Due to advancements in numerical modelling and design optimization, the design complexity of aircraft components is steadily increasing. This results in the demand of specialized low volume production of complex hardware, small and large sized components. Canadian aerospace suppliers are therefore highly motivated to develop new methods to fabricate aircraft certified hardware and components that improve on current design flexibility and mass, while maintaining the required safety standards and mechanical properties. Research in the field of additive manufacturing of polymer-based composites, specifically fused filament fabrication (FFF) shows a promising solution as an innovative manufacturing process. The objective of this research project is the scientific and technological advancement of FFF technology to make the materials and process suitable to produce repeatable high-quality parts for the aerospace industry. More specifically, this project strives for advancements in the field of 3D printable composite materials, processing of high-performance composites via FFF, as well as the reduction of the notorious process variations associated to 3D printing by leveraging smart monitoring technology coupled with numerical simulation approaches. In addition, the development of an innovative and robust, large scale 3D printing system will push the state of the art of additive manufacturing for aerospace parts to a new level.

Tasks per student

With the support of a Graduate student(s) and the lab team: - Develop a methodology to quantify and measure 3D printed part quality using destructive testing methods, such as mechanical testing (tension test, compression test) and thermal analysis (DSC, DMA).

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Number of positions

1

Academic Level

Year 3

Description

The application of photon pressure from a powerful laser onto a thin reflective film (lightsail) can鈥攊n principle鈥攁ccelerate the sail to speeds necessary to achieve interstellar flight. This project will examine the issues associated with the flux of intense laser radiation onto the sail. The ability of the sail to dampen perturbations induced by the laser or the sail itself must be examined to determine if the energy dissipated will result in sail destruction. The interaction of intense laser fluxes with candidate sail material and dust grains that would be ahead of the sail will be studied experimentally. Finally, an experimental facility to simulate the dynamics of sail acceleration using gasdynamic loading will be used to study the response of candidate sail materials to impulsive loading.

Tasks per student

Student 1: Student will model the dynamics of the lightsail incorporating damping/dissipation into existing analytical and finite element models of lightsail dynamics. Student 2: The student will examine laser-matter interaction at the flux levels encountered in laser-driven flight (10^8 鈥� 10^11 W/m2) using in-lab micron-scale fiber optic laser. Student 3: Experimental simulation using gasdynamic loading onto thin films in an experimental shock tube facility.

听

Number of positions

3

Academic Level

No preference

Description

Laser thermal propulsion is a technology that could enable rapid transits within the solar system, making missions such as 鈥淢ars in a month鈥� possible. In laser thermal propulsion, an earth-based or near-earth-orbit-based laser beams energy to a focusing mirror on a spacecraft, heating a propellant (hydrogen) and expanding it through a nozzle to generate thrust. Since the power source is not carried onboard, very great values of specific impulse, thrust, and thrust-to-mass ratio can be obtained. The key issue with this technology is containing the very high (~10,000 K) temperatures generated in the propellant heating chamber. This project will examine the heating issues and strategies that might be able to mitigate the heat flux to the chamber wall.

Tasks per student

Task Student 1: Design Apparatus/Heat Transfer: The student will operate a newly-constructed facility using an imploding shock wave that will create a cylindrical pocket of highly ionized gas in a cylindrical apparatus. Task Student 2: Experiment: The student will use an in-house laser to experiment on the absorption of laser flux into seeded gas to simulate the laser absorption of laser light into the propellant gas. Task Student 3: Experiment: The student will work both with of the apparatus described above to make measurements of the absorbed/re-radiated luminosity in gas using optical diagnostics.

听

Number of positions

3

Academic Level

No preference

Description

In order to achieve the ultrahigh velocities necessary for interstellar travel, traditional rocket propulsion is not sufficient. In addition to laser-directed energy, streams of high velocity fundamental particles or pellets have the potential to push spacecraft to extreme velocities. This project will explore using the momentum flux of particles, occurring either naturally or human-generated, to accelerate spacecraft to high velocities. The project will involve writing computer simulations of charged particles interacting with electromagnetic fields and computing the associated momentum transfer.

Tasks per student

Task Student 1: The student will study the ability of magnetostatic and electrostatic fields to direct (collimate) charge particles. In addition to proving a means to accelerate a spacecraft, this technology could be used to create dynamic compression members that could be load-bearing structures, enabling spacecraft of enormous size and very low areal density. Task Student 2: The student will study the technique of dynamic soaring on fluxes of charged particles exhibiting regions of fast and slow flow (e.g., fast and slow solar wind, solar system termination shock, etc.) via a vehicle capable of high lift-to-drag. Methods to optimize the maneuver to maximize spacecraft velocity will be explored. Task Student 3: The student will study the ability of magnetic fields (as generated by superconducting cables) to reflect charged particles, enabling high lift-to-drag operation of so-called magnetic sails.

听

Number of positions

3

Academic Level

No preference

Description

The rotating detonation engine (RDE) is a novel propulsion concept in which a detonation wave continuously propagates in an annular channel that has the potential to generate significantly greater thrust for the given amount of propellant consumed. This project will contribute to an ongoing collaboration between 91社区 and Concordia Universities to flight test a rotating detonation engine, including laboratory testing of a prototype engine at 91社区.

Tasks per student

Task Student 1: Student will engage in computer modelling of an RDE using an existing computational simulation software, studying the regimes of stable/unstable engine operation. Task Student 2: Experiments will be conducted to determine the regime of stable engine operation, varying the fuel/oxidizer combination, mass flow rate, etc. Task Student 3: Student will develop diagnostic techniques to measure the heat flux to the walls of the RDE.

听

Number of positions

3

Academic Level

No preference