L’applicazione della diffrattometria dei raggi X per l’analisi del cedimento dei componenti meccanici

Abstract

X-ray diffraction is a well-known experimental technique for measuring residual stresses in metallic materials. If XRD is applied to the fracture surface of a broken part it becomes a fractographical technique, that is to say that it is possible to relate the results of the measures to the loading condition that lead a component to fail. In this paper, after an introduction about the technique, XRD fractography is ap- plied to a fatigue failed diesel engine crankshaft. It was possible to determine the load that lead the crank- shaft to fail and to evidence some original aspects about the application of this technique to real machine parts. PAROLE