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Volume 42 Issue 5
May  2016
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Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(5): 969-976.
FU Yu, XIONG Junjiang. Test and characterization model on fatigue behavior for pre-corroded metallic aircraft materials[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(5): 969-976. doi: 10.13700/j.bh.1001-5965.2015.0348(in Chinese)
Citation: FU Yu, XIONG Junjiang. Test and characterization model on fatigue behavior for pre-corroded metallic aircraft materials[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(5): 969-976. doi: 10.13700/j.bh.1001-5965.2015.0348(in Chinese)
shu

Test and characterization model on fatigue behavior for pre-corroded metallic aircraft materials

doi: 10.13700/j.bh.1001-5965.2015.0348

  • School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 28 May 2015
  • Publish Date: 20 May 2016
    Abstract
  • New S-N-t surface model was proposed for characterizing fatigue behavior of pre-corroded metallic materials and novel formulae were derived to estimate the parameters of the proposed model. Fatigue life-group and up-down tests were conducted on un-notched and notched pre-corroded specimens for three different types of metallic aircraft materials (LD2CS, LD10CS and 15CrMnMoVA)to determine the fatigue S-N-t surface. Good agreements were achieved between the test and the new S-N-t surface models by applying the new proposed S-N-t surface model to the test data points. Fatigue behavior of un-notched and notched pre-corroded metallic aircraft materials decreases with the increase of pre-corrosion time. The un-notched specimens show better fatigue behavior than notched ones at the same stress level and pre-corrosion time.

     

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