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TECHNICAL PAPERS

Fatigue Damage Mechanisms of Bridging Fibers in Titanium Metal Matrix Composites

[+] Author and Article Information
M. N. Tamin

Faculty of Mechanical Engineering, Universiti Technlogi Malaysia, Johr Bhara, Malaysia

H. Ghonem

Department of Mechanical Engineering, University of Rhode Island, Kingston, RI 02881

J. Eng. Mater. Technol 122(4), 370-375 (May 04, 2000) (6 pages) doi:10.1115/1.1288770 History: Received February 09, 2000; Revised May 04, 2000
Copyright © 2000 by ASME
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References

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Bowen, P., Ibbotson, A. R., and Beevers, C. J., 1991, “Characterization of Crack Growth in Continuous Fiber Reinforced Titanium Based Composites Under Cyclic Loading,” Fatigue of Advanced Materials, Ritchie, R. O., Dauskardt, R. H., and Cox, B. N., eds., Materials and Component Engineering, PO Box 1550, Edgbaston, Birmingham B15 2JZ, UK, pp. 379–393.
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Figures

Grahic Jump Location
Illustration of the fracture process for a bridging fiber in an MMC
Grahic Jump Location
Illustration of the fracture process for a bridging fiber in an MMC
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Evolution of the axial component of bridging fiber stresses at various loading conditions applied to the composite. The squares located along the curves indicate the number of cycles at the end of the bridging stage corresponding to the loading conditions as obtained from data of Fig. 1.
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Residual fatigue strength of SCS-6 fibers at 500 and 650°C for various maximum applied stress (stress ratio, R=0.1)
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Fatigue strength-life (S-N) curve for nonconsolidated SCS-6 fibers at 500 and 650°C (stress ratio, R=0.1)
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Circular cracks appearing on the surface of the as received fatigued fibers
Grahic Jump Location
Spalling of carbon coating layers showing the fiber core prior to the occurrence of damage by advancing circular cracks
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Notches location along the ceramic core of fatigued fibers
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Modified S-N curve for consolidated SCS-6 fibers at 500 and 650°C (stress ratio, R=0.1) and comparison with experimental results

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