Abstract
In order to test the accuracy of theoretical fracture models for mortar and concrete, it is necessary to have accurate measurements of the crack profiles. In this study, sandwich holographic interferometry has been used to find the crack profiles in a center-notched plate specimen loaded at the center of the notch. The results have shown that at low load levels with corresponding short crack lengths, there is little difference between the measured crack profiles and elastic crack profiles computed by finite-element analysis. At high loads with long crack lengths there is a large difference between measured and computed elastic crack profiles. The data suggest the presence of a closing pressure at the crack tip and that there may be a limit to crack-tip-opening displacement (CTOD) before the crack propagates.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Abramson, N., The Making and Evaluating of Holograms, Academic Press (1981).
Abramson, N. andBjelkhagen, H., “Sandwich Hologram Interferometry. (Part) 5. Measurement of In-plane Displacement and Compensation for Rigid Body Motion,”Appl. Opt.,18, (16),2870 (1979).
Building Code Requirements for Reinforced Concrete (ACI 318-83), Amer. Concrete Inst., Detroit (1983).
Alvarado, M., Shah, S.P. and John, R., “Mode I Fracture in Concrete Using Center Cracked Plate Specimens,” accepted for publication in J. Eng. Mech. Div., ASCE (March 1988).
Bazant, Z.P. andOh, B.H., “Crack Band Theory for Fracture of Concrete,”Mat. and Struct.,16 (93),155–77 (May–June 1983).
Bjelkhagen, H., “Investigation on the Resolution That Can Be Obtained With the Baltay Holographic Arrangement for the 15-Foot Bubble Chamber,” Proc. Phototronics Applied to Nuclear Physics: 2. Nucleophot, CERN-Rep. 85-10:7 (July 1985).
Hillerborg, A., Modeer, M. andPetersson, P.E., “Analysis of Crack Formation and Crack Growth in Concrete by Means of Fracture Mechanics and Finite Elements,”Cement and Concrete Res.,6 (6),773–782 (Nov. 1976).
Jaquot, P. andRastogi, P.K., “Speckle Metrology and Holographic Interferometry Applied to the Study of Cracks in Concrete,”Fracture Mechanics in Concrete, ed. F.H. Wittmann Elsevier Publishers B.V., Amsterdam (1983).
Jenq, Y.S. andShah, S.P., “A Fracture Toughness Criterion for Concrete,”Eng. Fract. Mech.,21 (5),1055–1069 (1985).
Jenq, Y.S. andShah, S.P., “Two Parameter Fracture Model for Concrete,”J. Eng. Mech., ASCE,111 (10),1227–1241 (Oct.1985).
Kesler, C.E., Naus, D.J. andLott, J.L., “Fracture Mechanics — Its Applicability to Concrete,”Proc. 1971 Int. Conf. on Behavior of Mat.,IV,Japan,113–124 (1972).
Kobayashi, A.S., Hawkins, N.M., Barker, D.B. and Liaw, B.M., “Fracture Process Zone of Concrete,” Proc. of NATO Advanced Workshop on Application of Fracture Mechanics to Cementitious Composites, ed. S.P. Shah, NATO-ARW, Northwestern Univ. (1984).
Nelson, D.V. andMcCrickerd, J.T., “Residual-Stress Determination Through Combined Use of Holographic Interferometry and Blind-Hole Drilling,” Experimental Mechanics,26 (4),379–385 (Dec. 1986).
Saouma, V.D., Ingraffea, A.R. andCatalano, D.M., “Fracture Toughness of Concrete: K IC Revisited,”J. Eng. Mech. Div., ASCE,108 (EM6),1152–1166 (1982).
Wecharatana, M. and Shah, S.P., “Prediction of Non-Linear Fracture Process Zone in Concrete,” J. Eng. Mech. Div., ASCE, 1100–1113 (June 1983).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Miller, R.A., Shah, S.P. & Bjelkhagen, H.I. Crack profiles in mortar measured by holographic interferometry. Experimental Mechanics 28, 388–394 (1988). https://doi.org/10.1007/BF02325181
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02325181