A Moiré-FE Method for Internal CTOA Determination
作者： J. H. Jackson , A. S. Kobayashi
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摘要: A hybrid moire-finite element (FE) analysis was used to determine the crack tip opening angle (CTOA) along a tunneling front in three-point bend (SENB) specimen. The specimen machined from ductile 2024-T351 aluminum plate of 8.1 mm thickness and pre-fatigued an initial length width ratio 0 /W≈0.45. then subjected stable growth varying Δa=0.5 5.5 mm, after which post-fatigued mark final loaded failure. quarter segment SENB modeled with truncated 3-D elastic-plastic FE model. Measured surface displacements, were obtained by moire analysis, increasing load prescribed on CTOA computed displacement, approximately 1 behind, normal front. good agreement between measured are indicative accuracy procedure.
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sci-hub.st 参考文章(8)
DS Dawicke, JC Newman, CA Bigelow, Three-Dimensional CTOA and Constraint Effects During Stable Tearing in a Thin-Sheet Material ASTM special technical publications. pp. 223- 242 ,(1995) , 10.1520/STP16386S
AS Gullerud, RH Dodds, RW Hampton, DS Dawicke, 3-D Finite Element Modeling of Ductile Crack Growth in Thin Aluminum Materials ASTM special technical publications. pp. 85- 101 ,(2000) , 10.1520/STP13397S
MF Kanninen, EF Rybicki, RB Stonesifer, D Broek, AR Rosenfield, CW Marschall, GT Hahn, Elastic-plastic fracture mechanics for two-dimensional stable crack growth and instability problems ASTM special technical publications. pp. 121- 150 ,(1979) , 10.1520/STP35828S
A. S. Kobayashi, A. F. Emery, W. J. Love, Y.-H. Chao, Subsize Experiments and Numerical Modeling of Axial Rupture of Gas Transmission Lines Journal of Pressure Vessel Technology-transactions of The Asme. ,vol. 110, pp. 155- 160 ,(1988) , 10.1115/1.3265580
E. Sugie, M. Matsuoka, T. Akiyama, K. Tanaka, Y. Kawaguchi, Notch Ductility Requirements of Line Pipes for Arresting Propagating Shear Fracture Journal of Pressure Vessel Technology-transactions of The Asme. ,vol. 109, pp. 428- 434 ,(1987) , 10.1115/1.3264926
A.F. Emery, A.S. Kobayashi, W.J. Love, B.W. Place, C. Lee, Y.H. Chao, An experimental and analytical investigation of axial crack propagation in long pipes Engineering Fracture Mechanics. ,vol. 23, pp. 215- 226 ,(1986) , 10.1016/0013-7944(86)90188-8
A. F. Emery, Y. H. Chao, A. S. Kobayashi, W. J. Love, Numerical Modeling of Full-Scale Pipe Rupture Tests Journal of Pressure Vessel Technology-transactions of The Asme. ,vol. 114, pp. 265- 270 ,(1992) , 10.1115/1.2929040
Greg B. May, Low-spatial-frequency steep grating for use in moiré interferometry Optical Engineering. ,vol. 33, pp. 1125- 1131 ,(1994) , 10.1117/12.166937