Premium
Calculation, Measurement, and Control of Interface Strength in Composites
Author(s) -
Gupta Vijay,
Yuan Jun,
Martinez Doris
Publication year - 1993
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1993.tb03784.x
Subject(s) - materials science , composite material , ultimate tensile strength , delamination (geology) , composite number , tectonics , paleontology , biology , subduction
Strength and energy criteria for interface delamination are given for composite systems involving anisotropic fibers. The tensile strength of planar interfaces is measured with a modified laser spallation experiment involving a laser Doppler displacement interferometer. The technique for achieving desired interface properties is demonstrated on an Nb/Al 2 O 3 , interface. In the as‐deposited state, the strength is determined to be 0.28 GPa. The interface strength is controlled with sputter‐deposited Cr and Sb interlayers. The strength of Nb/Al 2 O 3 interfaces varies from 0.28 to 0.35 GPa when the Cr layer thickness varies from 1 to 50 Å. The strength is reduced to 0.16 GPa with Sb thickness of 70 Å.