Author(s)

N. Bonora, M. Cavallini, F. lacoviello & M. Marchetti

Abstract

Crack initiation in Al-Li alloy using continuum damage mechanics N. Bonora," M. Cavallini," F. lacoviello," M. Marchetti,* " Dipartimento di Ingegneria Industrial, University of Cassino, via Zamosch 34, 03034 Cassino (FR), Italy * Aerospace Department, University of Rome 'La Sapienza', via Eudossiana 18, 00184 Rome, Italy ABSTRACT Continuum Damage Mechanics (COM) represents a complementary tools to fracture mechanics to investigate the phenomena related to the fracture in metals. In this paper the damage phenomena in Al-Li alloy are investigated. The application of the COM model requires the indentification of some parameters that are directly related to the material under investigation. In this paper the experimental procedure used to monitor damage accumulation under progressive tensile loads is presented in details and the practical difficulties and the corrections necessary to avoid errors in the measurements are also discussed. INTRODUCTION In many

Keywords