Análisis experimental y numérico del método del intercepto para evaluar la extensión estable de grieta en una probeta C(T) de acero

J. R. Donoso; R. Leiva; F. Labbé

doi:10.3989/revmetalm.0809

Experimental and numerical analysis of the intercept method for evaluating stable crack extension in a steel C(T) specimen

Authors

J. R. Donoso Profesor, departamento Ciencia de materiales, Universidad Santa María
R. Leiva Alumno de Postgrado y Profesor, departamento de mecánica, Universidad Santa María
F. Labbé Alumno de Postgrado y Profesor, departamento de mecánica, Universidad Santa María

DOI:

https://doi.org/10.3989/revmetalm.0809

Keywords:

Stable crack growth, Common format, Concise format, Elastic-plastic fracture, Crack growth law

Abstract

A new method for evaluating the crack size in a fracture mechanics test which only has force-displacement data, P-v, is introduced. This method consists in generating P-v curves of the "a constant" type, and obtain their intercepts with the experimental curve. By using P-v-a data of an A 508 C(T) specimen, and a two-dimensional finite element model, it is shown that the method contributes to generate relevant data concerning the evolution of the crack size in a test. The results obtained with the method make it possible to construct a J-R curve which is practically identical to that constructed with the original experimental data.

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References

[1] ASTM E 1820-08, American Society for Testing and Materials, 2008.

[2] B.P. Pehrson, y J.D. Landes, Fatigue Fract. Eng.Mater. Struct. 30 (2006) 73-86. doi:10.1111/j.1460-2695.2006.01046.x

[3] J.R. Donoso, J. Zahr y J.D. Landes, Fatigue and Fracture Mechanics, 34th Volume, ASTM STP 1461, S.R. Daniewicz, J.C. Newman y K.-H. Schwalbe, Eds., ASTM International, West Conshohocken, PA, 2005, pp. 323-339

[4] J.R. Donoso, J.Zahr y J.D. Landes, Rev. Metal. Madrid 41 (2005) 401-480.

[5] J.R. Donoso, K. Vásquez y J.D. Landes, J. ASTM Int. (JAI) 5 (2008) 1-15. doi:10.1520/JAI101546

[6] J.R. Donoso y J.D. Landes, Fatigue and Fracture Mechanics: 30th Volume, ASTM 1360, P.C. Paris and K.L. Jerina, Eds., ASTM International, West Conshohocken, PA, 2000, pp. 34-50.

[7] J.R. Donoso y J.D. Landes, Eng. Fract. Mech. 47 (1994) 619-628. doi:10.1016/0013-7944(94)90153-8

[8] J.R. Donoso y J.D. Landes, Fatigue and Fracture Mechanics: 32nd Volume, ASTM 1406, R. Chona. Ed., ASTM International, West Conshohocken, PA, 2001, pp. 261-278.

[9] J.R. Donoso y J.D. Landes, ECF17, 17th Europ. Conf. Fracture, Brno, 2008, pp. 539-546.

[10] H.A. Ernst, P.C. Paris y J.D. Landes, Fracture Mechanics; Thirteenth Conf., ASTM STP 743, Richard Roberts, Ed., ASTM International, 1981, pp. 476-502.

[11] J.R. Donoso, A. Ortiz, y F. Labbé, Rev. Metal. Madrid 39 (2003) 357-366.

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Published

2009-10-30

How to Cite

Donoso, J. R., Leiva, R., & Labbé, F. (2009). Experimental and numerical analysis of the intercept method for evaluating stable crack extension in a steel C(T) specimen. Revista De Metalurgia, 45(5), 325–333. https://doi.org/10.3989/revmetalm.0809

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Issue

Vol. 45 No. 5 (2009)

Section

Articles

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