Damage detection via embedded sensory particles – Effect of particle/matrix interphase properties

摘要: Abstract Supported by recent studies, a crack interior to the host material will cause an especially strong stress concentration and thus can be detected monitoring or sensing localized changes in magnetic properties of particles metallic composites. Using finite element analysis calibrated from experiments, this work investigates effects thickness particle/matrix interphase on phase transformation response embedded sensory vicinity existing matrix. Depending elastic cohesive properties, its thickness, operational temperature, which is known delay promote martensitic transformation, it found that damage may occur at levels lower than needed initiate MSMA particles. Such would mitigate degree particle transforms reduces sensitivity. The effect position relative tip studied via full factorial design experiments. To assess true feasibility technique, average change permeability given constant applied fields evaluated.