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Multiple matrix cracking in a fiber-reinforced titanium matrix composite under high-cycle fatigue

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Abstract

An experimental study of multiple matrix cracking in a fiber-reinforced titanium alloy has been conducted. The focus has been on the effects of stress amplitude on the saturation crack density and the effects of crack density on hysteresis behavior. Comparisons have been made with predictions based on unit cell models, assuming the sliding resistance of the interface to be characterized by a constant interfacial shear stress. In addition, independent measurements of the sliding stress have been made using fiber pushout tests on both pristine and fatigued specimens.

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Authors and Affiliations

  1. Advanced Life Systems and Methods Group, United Technologies, Pratt and Whitney, 33410-9600, West Palm Beach, FL

    D. P. Walls (Technical Specialist)

  2. Materials Department, University of California, 93106, Santa Barbara, CA

    J. C. McNulty (Graduate Student) & F. W. Zok (Associate Professor)

Authors
  1. D. P. Walls
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  2. J. C. McNulty
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  3. F. W. Zok
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Additional information

D.P. WALLS, Graduate Student, formerly with the Materials Department, University of California, Santa Barbara

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Walls, D.P., McNulty, J.C. & Zok, F.W. Multiple matrix cracking in a fiber-reinforced titanium matrix composite under high-cycle fatigue. Metall Mater Trans A 27, 1899–1907 (1996). https://doi.org/10.1007/BF02651939

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  • DOI: https://doi.org/10.1007/BF02651939

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