High Speed Photographic Analysis Of Stress Wave Propagation, High Velocity Deformation, And Fracture In Impact Of Solids

Merit and demerit of several high speed photographic techniques in applying to high speed photoelastic analysis of stress wave propagation, high velocity deformation, and fracture in impact of solids, are briefly surveyed. Some characteristic cases of high speed photoelastic analysis are reported. They are concerned with the problems of dynamic stress distribution by stress wave propagation, crack propagation, and supersonic disturbance source travelling in solid, etc. Strain and fracture behaviour analysis of metallic specimens in high velocity tension test up to 200 m/ sec is also reviewed and obtained crystal lattice systems effect in high velocity tensile breaking elongation is presented.