An Ultra-High-Speed Velocity-Based Interferometer System used for Innovative Discoveries on the Impact and Shock Responses of Materials and Structures

点击翻译按钮获取中文摘要

To improve our understanding of deformation and failure in materials and structures during impact and shock events in Biomechanics, Defence and Aerospace, and Advanced Manufacturing, we are requesting funding to purchase a state-of-the-art ultra-high-speed multi-channel velocity-based interferometer system (known as Photon Doppler Velocimetry - PDV). This system will allow the simultaneous study of highly transient deformation fields spanning nanoseconds to milliseconds (e.g., phase transformation during laser machining to bulging of armor during ballistic impact). The PDV system will leverage current +$1.5 million NSERC- and CFI-funded mechanical testing, impact and shock labs, and manufacturing facilities, and will support +45 HQP. There is currently no comparable system in Canada capable of operating at the same sampling rates (80 GHz), bandwidths (25 GHz), and low noise (2x more expensive, possess shorter recording times and have slower sampling rates (max 10 MHz), and have less flexibility in measurement placement (e.g., fixed). The equipment will serve as a centerpiece of a cross-university and diverse research program addressing fundamental and applied challenges in three core Themes supporting Canadian industries: 1) Biomechanics: Reduce injury during impact (e.g., sport collisions) and improve health through the design, refinement, and qualification of biofidelic implant and protective structures. 2) Defence the familiarity of the applicants with advanced diagnostics (e.g., cameras, interferometers), their proven publication record in Theme-related studies (+190 papers), and recognized researcher quality (e.g., ASME Fellow, Canadian Research Chair); and the many on-going team projects that make use of the PDV system (~$2.1M/year). Finally, the research program will offer world-class training to HQP that emphasizes: advanced technical (e.g., Data Analytics) and professional development training (e.g., Entrepreneurship); immersive exchange programs and workshops with Major Users that promote knowledge translation (e.g., Defence Canada, General Dynamics, InnoTech Alberta, King's College, US Army); and hiring for EDI through an unbiased recruitment process. This will promote fundamental discoveries and impactful joint-university publications. A delay in acquiring this equipment will diminish HQP training, constrain the innovation of our programs, and limit the potential for attracting industrial partners and collaborators.