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A Test Method for Assessing Interfacial Shear Strength in Composites



Gale A. Holmes, Donald L. Hunston, Walter G. McDonough, R C. Peterson


Two of the critical factors controlling the long-term performance and durability of composites in structural applications is the fiber-matrix interfacial shear strength (IFSS) and the durability of the fiber-matrix interface. The single fiber fragmentation test (SFFT) has been viewed by many as the best method for determining these parameters. Although the SFFT has been extensively researched, the micro-mechanics models used to obtain IFSS values are based on simplifying assumptions that are usually not realized under experimental conditions. Thus, results from this test often violate the known strength of the constituent materials. Therefore, a new test method is presented here that utilizes realistic assumptions.
Proceedings Title
Proceedings of the 45th International SAMPE Symposium (paper 45-098)
Conference Dates
May 21-25, 2000
Conference Location
Conference Title
International Symposium of SAMPE


interfacial shear strength, model, single fiber fragmentation test


Holmes, G. , Hunston, D. , McDonough, W. and Peterson, R. (2000), A Test Method for Assessing Interfacial Shear Strength in Composites, Proceedings of the 45th International SAMPE Symposium (paper 45-098), Undefined, [online], (Accessed February 24, 2024)
Created April 30, 2000, Updated October 12, 2021