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International Journal of Damage Mechanics
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Influence of Interfacial Bond Strength on Fatigue Life and Thermo-Mechanical Behavior of a Particulate Composite: An Experimental Study

C. Basaran

Department of Civil, Structural and Environmental Engineering University at Buffalo, State University of New York, USA, cjb{at}buffalo.edu

S. Nie

Department of Civil, Structural and Environmental Engineering University at Buffalo, State University of New York, USA

C.S. Hutchins

DuPont Surfaces, Yerkes R&D Laboratory Buffalo, NY 14207, USA

H. Ergun

Civil Engineering Department, Istanbul Technical University Maslak, Istanbul 34469, Turkey

Experimental studies conducted on a particular cast acrylic composite demonstrate the significant influence of the interfacial bond strength between filler particles and the polymer matrix on the fatigue life, and mechanical properties. The composite studied in this project is composed of a ductile matrix, which is lightly cross-linked poly-methyl methacrylate (PMMA) and hard, brittle alumina trihydrate (ATH) agglomerate particle filler. In the study, high, moderate, and low levels of interfacial adhesion between the matrix and the filler are investigated, while all the other material properties are kept constant. Monotonic tension and fatigue tests are conducted at different temperatures. Material degradation is presented in terms of elastic modulus degradation, load-drop parameter, and plastic strain range.

Key Words: particulate composites • fatigue life • damage mechanics • particle filled composites • interfacial bond.

This version was published on March 1, 2008

International Journal of Damage Mechanics, Vol. 17, No. 2, 123-147 (2008)
DOI: 10.1177/1056789507077437
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