Estimation of the Maximum Load Applied to Automotive Carburized Gears Using an Acoustic Emission Technique

Paper #:
  • 950668

Published:
  • 1995-02-01
Citation:
Yamaguchi, T., Shibata, K., Taguchi, T., and Obata, Y., "Estimation of the Maximum Load Applied to Automotive Carburized Gears Using an Acoustic Emission Technique," SAE Technical Paper 950668, 1995, https://doi.org/10.4271/950668.
Pages:
11
Abstract:
A study was made of the possibility of using an acoustic emission (AE) technique to estimate the maximum load applied to automotive carburized gears under actual operating conditions. Three-point bending tests done on carburized steel specimens showed that, provided a small crack was induced in the material, AE was not generated until the material was subjected to a higher bending load than the maximum load previously applied. Using this effect, the maximum load applied to gears, in which a crack had been induced during endurance testing, was estimated. Although the estimated maximum load was about 14% higher than the actual load, the AE technique appears to be a promising method for use in the design and durability assurance of carburized parts of automotive powertrains.
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