AE Measurements and Fracture Toughness Evaluation in Indentation Test for Alumina Ceramics

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概要

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• Vickers and Knoop indentation tests were performed on alumina ceramic specimens by measuring acoustic emissions. In Vickers indentation test, the Weibull plots of the threshold load Pth, at which total AE energy begins to burst, seem to obey a 2-parameter Weibull distribution function, while those in Knoop indentation test seem to obey a combined Weibull distribution function. The ratios of the numbers of the specimens, in which Pth was observed, versus total numbers of the specimens were 62% in Vickers indentation, and 41% in knoop indentation. Some additional differences were observed between Vickers and Knoop indentation tests.

• 一般社団法人日本機械学会の論文

著者

• Matsuo Yohtaro

  Department Of Mechanical Engineering For Production Faculty Of Engineering Tokyo Institute Of Techno

• NOZUE Akira

  Department of Engineering, Faculty of Science and Engineering, Sophia University

• Nozue Akira

  Department Of Engineering Faculty Of Science And Engineering Sophia University

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