Load-Cmod data analysis for crack closure

Seetharam, SA and Dash, PK (1992) Load-Cmod data analysis for crack closure. International Journal of Fracture, 53. R53-R58. ISSN 0376-9429

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Abstract

The use of load/crack-mouth-opening displacement (CMOD) records during fatigue cycling to estimate crack closure is evaluated by comparing load/CMOD values to benchmark crack opening data. Numerical differences between crack-opening stress values estimated by load/CMOD and the benchmark crack openings suggests that CMOD-estimated closure cannot adequately explain the stress-level effect on crack-growth rates. It is suggested that a fourth-degree polynomial fit for the load/CMOD data and suitable data analyses can lead to more effective benchmark data regarding crack-closure phenomena(C.C.S.).

Item Type:	Article
Additional Information:	Copyright for this article belongs to Kluwer Academic Publishers.
Uncontrolled Keywords:	Crack closure;Crack opening displacement;Failure analysis; Fracture mechanics;Load distribution (forces);Crack propagation;Fatigue (materials);Stress distribution;Stress intensity factors
Subjects:	ENGINEERING > Structural Mechanics
Depositing User:	Mr. Ravikumar R
Date Deposited:	05 Oct 2006
Last Modified:	24 May 2010 04:21
URI:	http://nal-ir.nal.res.in/id/eprint/2884

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