Residual stresses in metal matrix composites: experimental determination by neutron diffraction
Fabrizio Fiori, Emmanuelle Girardin, Alessandra Giuliani, Franco Rustichelli INFM - Istituto Nazionale per la Fisica della Materia, U.d.R. Ancona, Italy Istituto di Scienze Fisiche, University of Ancona, Via Ranieri 65, 60131 Ancona, Italy
Annals 2 No. 3, 2002 pages 121-125
DOI:
keywords:
abstract Neutron diffraction experiments are presented, for the evaluation of residual stresses in metal matrix composites (MMC) samples and components, induced by different thermo-mechanical treatments and operating conditions. After a brief description of fundamental theory of residual stresses in MMCs, and some remarks on the experimental technique, results are presented concerning experiments on tensile and fatigued specimens as well as on real components. From experimental data, the different contributions to the measured stress, namely macrostresses and elastic and thermal mismatch microstresses, were evaluated. Finally, experimental results are compared to finite element calculations.