This study concerns the characterization of crack-propagation properties of a metal matrix composite made of a titanium matrix (Ti6242) reinforced by TiC particulate (Vf = 10%). This kind of material is usually employed for aero-engine applications. The inquire aim is formulating a damage model able to describe the crack-growth phenomenon due to fatigue loads. The experimental analyses were carried out by round-CT specimens and the back face strain gage technique was used to evaluate the crack-closure effect. With the experimental data, the material parameters for a new model, that was proposed for crack-propagation in aluminum matrix composite material and is able to evaluate the crack-closure effect, are calculated; furthermore, a new experimental data processing method is presented.

Fatigue crack propagation in a particulate reinforced metal matrix composite

DE IORIO, ANTONIO;IANNIELLO, DOMENICO;IANNUZZI, ROBERTO;PENTA, FRANCESCO;PUCILLO, Giovanni Pio
2003

Abstract

This study concerns the characterization of crack-propagation properties of a metal matrix composite made of a titanium matrix (Ti6242) reinforced by TiC particulate (Vf = 10%). This kind of material is usually employed for aero-engine applications. The inquire aim is formulating a damage model able to describe the crack-growth phenomenon due to fatigue loads. The experimental analyses were carried out by round-CT specimens and the back face strain gage technique was used to evaluate the crack-closure effect. With the experimental data, the material parameters for a new model, that was proposed for crack-propagation in aluminum matrix composite material and is able to evaluate the crack-closure effect, are calculated; furthermore, a new experimental data processing method is presented.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/658962
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