journal article·2000-10-01

Statistical Considerations in the Analysis of Data From Fatigue Tests on Delaminated Cross-Ply Graphite/Epoxy Composites

Valeria La Saponara, George A. Kardomateas

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Abstract

The objective of this paper is to analyze the results of compressive fatigue experiments performed on a set of delaminated Graphite/Epoxy cross-ply composites. Crack branching, the failure mode we are interested in, occurred during the tests. Due to scatter, it is somewhat difficult to draw conclusions on the values of the branching angles, the key parameter of the problem, unless the tools of statistical and exploratory data analysis (EDA) are used. Here, a brief discussion on some of these techniques is presented, and their application to the set of obtained test data is carried out. The results seem to indicate that the crack grows faster when it is not self-similar, with a higher rate of growth for cracks that branch with a greater angle out of the interface. [S0094-4289(00)03204-7]
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Research context

OpenAlex topics: Mechanical Behavior of Composites · Fatigue and fracture mechanics · Probabilistic and Robust Engineering Design

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Affiliations

School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0150

References (6)

Show source-provided references
1. La Saponara, V., and Kardomateas, G. A., 1999, “Crack Branching in Layered Composites: An Experimental Study,” J. Compos. Technol. Res., submitted for publication.
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