A methodological improvement of dynamic fracture toughness evaluations using an instrumented Charpy impact tester T. Lorriot, E. Martin, J.M. Quenisset, S. Sahraoui et J.L. Lataillade J. Phys. IV France, 04 C8 (1994) C8-125-C8-130 DOI: 10.1051/jp4:1994819