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Improvement of Threshold Stress Intensity Factor Range of Stainless Steel by Cavitation Peening

机译：空化喷丸改善不锈钢阈值应力强度系列范围

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In order to investigate the mechanism of improvement of fatigue strength of stainless steel by cavitation peening, a load controlled plate bending fatigue test machine was developed, and the threshold stress intensity factor range ΔK_(th) of stainless steel with and without cavitation peening was investigated. It was revealed that ΔK_(th) of stainless steel was improved from 3.88 MPa {the square root of}m to 7.11 MPa {the square root of}m by the cavitation peening. Note that the evaluation method of ΔK_(th) using the load controlled plate bending fatigue test with a notched specimen was useful to investigate effect of mechanical surface treatment such as cavitation peening and shot peening.
机译：为了研究通过空化喷丸改善不锈钢疲劳强度的机制，开发了一种负载控制的板弯曲疲劳试验机，并研究了不锈钢的阈值应力强度因子范围ΔK_（TH），具有和无剥离喷丸的不锈钢。据揭示了不锈钢的ΔK__（Th）从3.88MPa {M到7.11 MPa的平方根{M的平方根×M×M的平方根。注意，使用负载控制板弯曲疲劳试验与缺口样本的ΔK__（th）的评价方法可用于研究机械表面处理的影响，例如空化喷丸和喷丸。

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