A. P. Jardine, G. Baure, Shape Change Technologies LLC, Thousand Oaks, CA
Shape Change Technologies characterized the shock damping properties of porous TiNi using high g-load impact forces to determine if the material is suitable for use in shock damping. Equiatomic TiNi has the unique ability to rapidly and reversibly change from its martensitic and austenitic phases with the application of stress. This phase change allows the intermetallic to absorb significant amounts of mechanical energy without deforming. The binary alloy can be fabricated to contain a network of interconnected pores, typically on the order of several hundred microns in size, using a process known as Self-propagating High-temperature Synthesis (SHS). This porous morphology augments the alloy’s inherent energy absorbing capability to produce a material with a very high shock mitigation capacity. A battery of experiments including Split Rod Hopkinson Bar tests were performed. Results show that porous TiNi can reduce the g-loading by over a factor of 10.
Shape Change Technologies characterized the shock damping properties of porous TiNi using high g-load impact forces to determine if the material is suitable for use in shock damping. Equiatomic TiNi has the unique ability to rapidly and reversibly change from its martensitic and austenitic phases with the application of stress. This phase change allows the intermetallic to absorb significant amounts of mechanical energy without deforming. The binary alloy can be fabricated to contain a network of interconnected pores, typically on the order of several hundred microns in size, using a process known as Self-propagating High-temperature Synthesis (SHS). This porous morphology augments the alloy’s inherent energy absorbing capability to produce a material with a very high shock mitigation capacity. A battery of experiments including Split Rod Hopkinson Bar tests were performed. Results show that porous TiNi can reduce the g-loading by over a factor of 10.
