Determination of interfacial mechanical properties of ceramic composites by the compression of micro-pillar test specimens

Journal Article · Sat Mar 23 00:00:00 EDT 2013 · Journal of Materials Science

DOI:https://doi.org/10.1007/s10853-013-7311-z· OSTI ID:1083724

Shih, Chunghao; Katoh, Yutai; Leonard, Keith J.; Bei, Hongbin; Lara-Curzio, Edgar

A novel method to determine the fiber-matrix interfacial properties of ceramic matrix composites is proposed and evaluated; where micro- pillar samples containing inclined fiber/matrix interfaces were prepared from a SiC fiber reinforced SiC matrix composites then compression-tested using the nano-indentation technique. This new test method employs a simple geometry and mitigates the uncertainties associated with complex stress state in the conventional single filament push-out method for the determination of interfacial properties. Based on the test results using samples with different interface orientations , the interfacial debond shear strength and the internal friction coefficient are explicitly determined and compared with values obtained by other test methods.

• Research Organization: Oak Ridge National Laboratory (ORNL); Shared Research Equipment Collaborative Research Center
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1083724
• Journal Information: Journal of Materials Science, Journal Name: Journal of Materials Science Journal Issue: 15 Vol. 48; ISSN 0022-2461
• Publisher: Springer
• Country of Publication: United States
• Language: English