The Study of Fatigue Crack Growth Shape under Mode I Constant Amplitude Loading

Abstract:

Article Preview

An experimental study was performed to study crack shape evolution of 16MnR pressure vessel steel by adopted compact tension (CT) specimens under Mode I constant amplitude loading. A data and numerical analysis of crack shape were conducted and the stress intensity factors (SIF) along crack front were calculated. The results revealed that curve crack shape could be described by elliptic equation properly and was similar in the stable crack growth stage. The initial crack shape was straight at the notch root, so SIF of the center was bigger than that of the surface. When the crack shape was curve, SIF of the center was smaller than that of the surface.

Info:

Periodical:

Edited by:

Grace Chang

Pages:

852-855

Citation:

W. F. Tu et al., "The Study of Fatigue Crack Growth Shape under Mode I Constant Amplitude Loading", Applied Mechanics and Materials, Vols. 148-149, pp. 852-855, 2012

Online since:

December 2011

Export:

Price:

$41.00

[1] Kwon SW, Sun CT: Int. J. Fract. 2000; 104: 291-315.

[2] Wu ZX: Eng. Fract. Mech. 2006; 73: 2600-2613.

[3] Branco R, Antunes FV: Eng. Fract. Mech. 2008; 75: 3020-3037.

[4] Gao ZL, Zhao TW, Wang XG, et al: J. Pressure Vessel Technol. - Trans. ASME 2009; 131: 1-9.

[5] ASTM: Annual Book of ASTM Standards E647-05 (2005); 28-32.

[6] Costa JDM, Ferreira JAM: Theor. Appl. Fract. Mec. 1998; 30(1): 65-73.