Fatigue deformation of 1050 aluminum in ultrasonic fatigue testing.

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  • 超音波疲労試験による１０５０アルミニウムの疲労変形
  • チョウオンパ ヒロウ シケン ニヨル 1050 アルミニウム ノ ヒロウ ヘン

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Abstract

Ultrasonic fatigue tests have been performed on commercial 1050 aluminum. Internal friction (Q-1) has been measured during fatigue tests and as a function of strain amplitude (ε). It is shown that more than 109 cycles test is necessary in order to determine the fatigue limit. Q-1 versus ε curves have the inflection points at particular strain amplitude which corresponds to the strain at fatigue limit. Below this strain amplitude, Q-1 does not change and any slip bands are not observed on the specimen surface fatigued for 1010 cycles.

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