Criteria for initiation of delamination in quasi-static punch-shear tests of a carbon-fiber composite material. | Zendy

Eric Chin | Zendy; Shawn English | Zendy; Timothy Briggs | Zendy

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Criteria for initiation of delamination in quasi-static punch-shear tests of a carbon-fiber composite material.

Author(s) -

Eric Chin,

Shawn English,

Timothy Briggs

Publication year - 2015

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/1226924

Subject(s) - delamination (geology) , composite number , materials science , shear (geology) , composite material , structural engineering , finite element method , direct shear test , ultrasonic testing , ultrasonic sensor , engineering , geology , acoustics , physics , paleontology , subduction , tectonics

V arious phenomenological delamination initiation criteria are analyzed in quasi - static punch - shear tests conducted on six different geometries. These six geometries are modeled and analyzed using elastic, large - deformation finite element analysis. Analysis output is post - processed to assess different delamination initiation criteria, and their applicability to each of the geometries. These criteria are compared to test results to assess whether or not they are appropriate based on what occurred in testing. Further, examinations of CT scans and ultrasonic images o f test specimens are conducted in the appendix to determine the sequence of failure in each test geometry.

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