MEASUREMENT OF THE LOCAL LONGITUDINAL STRAIN IN THE UNIAXIAL TENSILE TEST UP TO HIGH STRAIN RATES N. EISENREICH, C. FABRY, R. FISCHER, A. GEISSLER, H.P. KUGLER and S. SINN J. Phys. Colloques, 49 C3 (1988) C3-739-C3-743 DOI: 10.1051/jphyscol:19883105