1 (Chairmen: D. C. Drucker, K. Kawata).- Analyses of high velocity tension of bars of finite length of bcc and fcc metals with their own constitutive equations.- Dynamic deformation of materials and structures under explosive loadings.- 2 (Chairmen: L. E. Malvern, K. Tanaka).- Deformation maps in the region of high dislocation velocity.- Dislocation configurations due to plate impact.- Experimental studies on the behaviour of dislocations in copper at high rates of strain.- Dislocation concepts in the mechanics of rapid deformation of metals.- 3 (Chairmen: U. S. Lindholm, J. Shioiri).- Some results on the dynamic deformation of copper.- Dynamic strength of Ti-alloys and Al-alloys.- Steady state deformation and dynamic restoration processes during high strain rate and high temperature deformation in metals and alloys.- 4 (Chairmen: W. Goldsmith, T. Hayashi).- Impact failure mechanisms in fiber-reinforced composite plates.- Computer simulation of dislocation groups dynamics under applied constant stress and its application to yield problems of mild steel.- Computer modeling of microscopic failure processes under dynamic loads.- Calculation of spall damage accumulation in ductile metals.- Observation of atomic behavior in crystal during shock compression by flash X-ray diffraction.- The influence of high-rate deformation on structure and properties of materials in the presence of stress concentrators.- 5 (Chairmen: W. Johnson, T. Nakamura).- On the behaviour of the process region at a fast running crack tip.- Crack propagation in plastics due to impact.- Loads and crack velocities during dynamic fracture.- 6 (Chairmen: K. B. Broberg, S. Kawashima).- Approximate calculations of spall and cratering in high speed impact.- Fracture and void development in hemi-spherical ended Perspex rods due to stress waves from detonators.- Spallation resulting from high-velocity impacts.- Micro-dynamical effects in high speed loading of porous metals.- Wave propagation and dynamic response analysis of rate dependent materials.- 7 (Chairmen: L. W. Morland, H. Fukuoka).- Plane wave propagation in anisotropic jointed media.- Behavior of materials under dynamic combined stresses of torsion and tension.- An analysis of elastic-plastic waves by the continuum theory of dislocations.- Recent results in micromechanics.- On supersonic and transonic impact of solids.- Identification of dynamic properties and wave propagation in viscoelastic bars.- Results for the single ricochet of spherical-ended projectiles off sand and clay at up to 400 m/sec.- An experimental study on the penetration of rigid projectiles into epoxy resin targets.- 8 (Chairmen: E. H. Lee, K. Kiyota).- On the transient response of long beams subjected to high velocity transverse impact.- High speed deformation of shells.- Shock and vibration characteristic of solid rocket vehicles.- 9 (Chairmen: M. Stelly, T. Jimma).- Some phenomena at the interface in hypervelocity impact of metals and its application to lamination of metal plates.- A fundamental study on head impact problem by finite element method.- High velocity impact of mild steel cylinder.- Dynamic frictional effects as measured from the split Hopkinson pressure bar.- Activities of the research committee of shock-resistant structures for automobile.- Discussion.