Evaluation of vibration stress of TA11 titanium alloy blade by quantitative fractography-中国期刊网

摘要 Vibrationfatigueisthemainfailuremodeofcompressorblade.Evaluatingthevibrationstressofbladethatleadstocrackingisveryusefulforanalysisofvibrationfatigue.Inthispaper,fatiguestressestimationmethodsbyquantitativefractographywerestudiedthroughexperimentalbladeandin-servicefirst-stagecompressorbladeinordertoevaluatetheinitiationvibrationstressofin-serviceblade.Theanalysisprocessofinitiationvibrationstresswasestablished.Theevaluatingresultofvibrationstressofin-servicebladesubjectedtocentrifugalforceandbendingvibrationstressagreeswithaeroenginetestresult.Itisshownthattheevaluationmethodcannotonlyevaluatetheequivalentfatiguestressesofdifferentcrackdepthsbutalsoyieldtheinitiationequivalentfatiguestress.

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Evaluation of vibration stress of TA11 titanium alloy blade by quantitative fractography

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Evaluation of vibration stress of TA11 titanium alloy blade by quantitative fractography

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