The Effects of LCF Loadings on HCF Crack Growth

Abstract

This report results from a contract tasking University of Portsmouth as follows: The contractor will investigate high cycle fatigue (HCF) effects in structural materials. This work will be a logical follow-on to three previous phases conducted under EOARD contract. In this phase, the contractor will: (1) extend the study of the effect of prior overloads by the employment of larger overload ratios; (2) establish the conditions at which the effects of overloads in the HCF + LCF loadings completely suppress the damage caused by HCF cycles; and (3) extend the analysis of new models to overcome the shortcomings of the Wheeler model to predict the onset of HCF cycle damage.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2002
Accession Number
ADA401964

Entities

People

  • B. E. Powell
  • J. Byrne
  • R. F. Hall

Organizations

  • University of Portsmouth

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  • Air Platforms

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  • Amplitude
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  • Foreign Object Damage
  • Intensity
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  • Materials
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  • Mechanics
  • Overload
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  • Aerodynamics.
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  • Technical Research and Report Writing.