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

Mario Guagliano

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 applied

to a fatigue failed diesel engine crankshaft. It was possible to determine the load that lead the crankshaft

to fail and to evidence some original aspects about the application of this technique to real machine

parts.


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DOI: http://dx.doi.org/10.3221%2FIGF-ESIS.02.04