Observation of fracture process zone by laser speckle technique and governing mechanism in fracture of concrete
作者： Hideyuki Horii , Toshimichi Ichinomiya
DOI: 10.1007/978-94-011-3638-9_2
关键词: Displacement (orthopedic surgery) 、 Bridging (networking) 、 Materials science 、 Speckle pattern 、 Fracture (geology) 、 Nonlinear system 、 Composite material 、 Mortar 、 Boundary element method 、 Mechanism (engineering) 、 Geotechnical engineering
摘要: Fracture tests with a wedge-loading device are carried out on mortar and concrete specimens so as to have stable crack growth. Using laser speckle technique the length of macrocrack distribution opening displacement measured. Results compared those obtained by boundary element method (BEM) analysis for Dugdale-Barenblatt-type model fracture process zone. The governing mechanism in which is represented discussed special attention microcracking It deduced that does not represent zone, thus implying zone bridging correspond pre-peak nonlinear part stress-strain curve uniaxial tension test post-peak tension-softening curve, respectively. concluded effect maximum load less significant than bridging. Possible models include addition proposed.
springer.com
sci-hub.se 参考文章(9)
H. Horii, A. Hasegawa, F. Nishino, Fracture Process and Bridging Zone Model and Influencing Factors in Fracture of Concrete Springer, New York, NY. pp. 205- 219 ,(1989) , 10.1007/978-1-4612-3578-1_21
Surendra P. Shah, FRACTURE MECHANICS FOR CONCRETE AND ROCK Experimental Techniques. ,vol. 11, pp. 3- 3 ,(1987) , 10.1111/J.1747-1567.1987.TB02229.X
Yeoushang Jenq, Surendra P. Shah, Two Parameter Fracture Model for Concrete Journal of Engineering Mechanics-asce. ,vol. 111, pp. 1227- 1241 ,(1985) , 10.1061/(ASCE)0733-9399(1985)111:10(1227)
R. A. Miller, S. P. Shah, H. I. Bjelkhagen, Crack profiles in mortar measured by holographic interferometry Experimental Mechanics. ,vol. 28, pp. 388- 394 ,(1988) , 10.1007/BF02325181
A. Hillerborg, M. Modéer, P.-E. Petersson, Analysis of crack formation and crack growth in concrete by means of fracture mechanics and finite elements Cement and Concrete Research. ,vol. 6, pp. 773- 782 ,(1976) , 10.1016/0008-8846(76)90007-7
Zdeněk P. Bažant, Size Effect in Blunt Fracture: Concrete, Rock, Metal Journal of Engineering Mechanics-asce. ,vol. 110, pp. 518- 535 ,(1984) , 10.1061/(ASCE)0733-9399(1984)110:4(518)
M. Elices, J. Planas, P. Maturana, Fracture of Concrete at Cryogenic Temperatures Springer, New York, NY. pp. 106- 116 ,(1989) , 10.1007/978-1-4612-3578-1_12
Zdeněk P. Bažant, Ta‐Peng Chang, Instability of Nonlocal Continuum and Strain Averaging Journal of Engineering Mechanics-asce. ,vol. 110, pp. 1441- 1450 ,(1984) , 10.1061/(ASCE)0733-9399(1984)110:10(1441)
Makoto KOBAYASHI, Toshihide MASKAWA, CP-Violation in the Renormalizable Theory of Weak Interaction CP Violation. pp. 199- 204 ,(1989) , 10.1016/B978-0-444-88081-9.50031-X