The influence of cyclic fatigue damage on the fracture toughness of carbon-carbon composites

Date

1996-01-01

Author

Ozturk, A

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The influence of cyclic loads on the fracture toughness of a tightly woven carbon-carbon composite was investigated as a function of stress levels. Results of fracture toughness tests were correlated with microstructural examination using scanning electron microscopy (SEM). Values for the stress intensity factor, K-Ic, were determined using the ASTM single-edge notched bend test. Results were discussed in terms of the effects of applied cyclic stress levels and the relationship of the load-displacement curves. The fracture toughness of the composite remained unaffected when the maximum tensile load in the fatigue cycle was up to 80% of the static tensile strength. However, a decrease in the fracture toughness was determined when it was exposed to cyclic loads above this threshold stress level. Changes in texture associated with cyclic fatigue were determined in the matrix of this composite. Copyright (C) 1996 Elsevier Science Limited

Subject Keywords

Carbon-carbon, Microstructure, Fracture toughness, Fatigue

URI

https://hdl.handle.net/11511/64150

Journal

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING

DOI

https://doi.org/10.1016/1359-835x(96)00035-8

Collections

Department of Metallurgical and Materials Engineering, Article

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Citation Formats

A. Ozturk, “The influence of cyclic fatigue damage on the fracture toughness of carbon-carbon composites,” COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, pp. 641–646, 1996, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64150.