Abstract
In order to investigate the causes of material fracture, a new method is proposed that uses only the fracture surfaces for determining the fracture parameters in terms of the Cract-tip opening angle (CTOA) and the J integral. This method is based on the principle of fracture-surface topography analysis (FRASTA). In FRASTA, the fracture surfaces are scanned by laser microscope and the elevation data is recorded. Based on this recorded elevation data, the J integral can be calculated. The J integral calculated by the new method agrees well with that calculated by the elastic compliance method. FRASTA allows easy determination of the crack opening deformation (CTOA and COA) and the variation in CTOA and COA through specimen thickness.
Similar content being viewed by others
References
E561 ASTM (2002) ArticleTitleStandard practice for R-curve determination Annual Book of ASTM Standards 03 IssueID01 534–546
E1152 ASTM (1993) ArticleTitleStandard test method for determining J–R curves Annual Book of ASTM Standards 03 IssueID01 853–863
A. Corigliano G. Maier S. Mariani (1999) ArticleTitleAnalysis of ductile fracture in damaged pipelines by a geometric parameter method Engineering Structures 21 924–936 Occurrence Handle10.1016/S0141-0296(98)00040-6
D.S. Dawicke M.A. Sutton J.C. Newman SuffixJr. C.A. Bigelow (1995) ArticleTitleMeasurement and analysis of critical CTOA for thin sheet aluminum alloy materials Fracture Mechanics 25 347–374
M.F. Kanninen C.H. Popelar (1985) Advanced Fracture Mechanics Oxford University Press New York
T. Kobayashi D.A. Shockey (1987) ArticleTitleA fractographic investigation of thermal embrittlement in cast duplex stainless steel Metallurgical Transactions A 18 1941–1949
T. Kobayashi D.A. Shockey (1991) ArticleTitleFRASTA: a new way to analyze fracture surface Advanced Materials and Processes 11 28–34
Y.N. Liu X.L. Song (1995) ArticleTitleCrack rotation factor and dynamic fracture measurement Engineering Fracture Mechanics 52 1029–1033 Occurrence Handle10.1016/0013-7944(94)00287-R
W.R. Lloyd (2003) ArticleTitleMicrotopography for ductile fracture process characterization, Part 1: theory and methodology Engineering Fracture Mechanics 70 387–401 Occurrence Handle10.1016/S0013-7944(02)00126-1
H. Miyamoto M. Kikuchi T. Kawazoe (1990) ArticleTitleA Study on the ductile fracture of Al-alloys 7075 and 2017 International Journal of Fracture 42 389–404 Occurrence Handle10.1007/BF01185959
M. Shiratori T. Miyoshi H. Matsushita (1980) Numerical Fracture Mechanics Jikkyo Shuppan Co. Tokyo (In Japanese)
A.A. Volinsky N. Moody W.W. Gerberich (1995) ArticleTitleFiducial mark and CTOA estimates of thin film adhesion International Journal of Fracture 119 IssueID120 431–439
B. Wang K.C. Hwang (1996) ArticleTitleStructural integrity assessment in elastic–plastic fracture Engineering Fracture Mechanics 54 471–478 Occurrence Handle10.1016/0013-7944(95)00239-1
J.S. Zhao (2003) Fracture Mechanics and Fracture Physics Press of Huazhong University of Science and Technology Wuhan (In Chinese)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Cao, Y., Tanaka, K. Determination of the CTOA and J integral by fracture surface topography analysis. Int J Fract 139, 253–266 (2006). https://doi.org/10.1007/s10704-006-0042-2
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s10704-006-0042-2