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

Technical Report · Tue Sep 01 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1226924· OSTI ID:1226924

Chin, Eric Brian ^[1]; English, Shawn Allen ^[1]; Briggs, Timothy ^[1]

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1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)

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.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1226924
• Report Number(s): SAND2015-8886; 609812
• Country of Publication: United States
• Language: English