Gradual opening of the crack during the loading phase

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Reference no: EM131069586

For each of the following cases, plot the load (P) versus the crack opening displacement (8) curve for a metallic material subjected to loading and unloading phases in zero-tension-zero fatigue:

(a) Plastic deformation at crack tip; no change in crack configuration (i.e. crack opening and crack length); loading phase.

(b) Gradual opening of the crack during the loading phase and plastic deformation at crack tip.

(d) Effect of plastic behavior = effect of configuration change on the P-δ plot during the unloading phase.

(e) Effect of plastic behavior > effect of configuration change on the P-δ plot during the unloading phase.

(f) Effect of plastic behavior < effect="" of="" configuration="" change="" on="" the="" p-="" δ="" plot="" during="" the="" unloading="" phase.="">

(g) Configuration change during the unloading, with negligible plastic deformation at crack tip.

Reference no: EM131069586

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