• Finally, examples are given for predicting the fatigue crack initiation life from the tensile properties of steels.

    最后给出根据拉伸性能估算疲劳裂纹起始寿命实例

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  • Moreover, the study indicated that the fatigue crack initiation period is the main portion of the total fatigue life at long lives.

    研究表明寿命范围,裂纹起始寿命疲劳寿命主要部分

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  • Crack initiation life is much longer than those of low shot peening pressure.

    强度试件表面微裂纹大量萌生,密度非常高。

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  • The fatigue crack initiation life for standard titanium alloy TC6 specimens is predicted, and the result is consistent with that of the experiment.

    利用该方法预估了TC 6钛合金标准件疲劳裂纹萌生寿命结果试验数据吻合。

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  • Especially the contribution to crack initiation life of the ground-air-ground circle in the crack growth formula is underestimated under the transport spectra.

    特别是运输机谱中的地—空—地循环裂纹扩展公式裂纹形成寿命贡献估计不足。

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  • The stress whitening can be clearly seen on the fatigue fracture surface and its region is the initiation and nucleation of fatigue crack which is the main part of total fatigue life.

    疲劳断口应力发白现象;应力发白区为疲劳裂纹形核萌生寿命占疲劳寿命大部分

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  • A calculating method of the total fatigue life of structural joints is proposed based on a study on both the fatigue crack initiation life and crack growth life of joints.

    通过结构疲劳裂纹形成寿命裂纹扩展寿命研究,提出了连接件疲劳寿命的计算方法

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  • The pre-straining prolonged the fatigue crack initiation life, and increased resistance coefficient and equivalent stress threshold of the fatigue crack initiation.

    应变可以延长疲劳裂纹形成寿命提高疲劳裂纹形成的抗力系数裂纹形成当量应力门槛值

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  • The crack initiation life and the crack fracture life are the main life of the specimen.

    试样寿命主要裂纹萌生寿命断裂寿命组成,扩展寿命占比例较少。

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  • The methods of fatigue crack initiation life predictions under complex load are introduced in this paper.

    介绍复杂载荷疲劳裂纹形成寿命预测方法

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  • A method for crack initiation life prediction of components is presented.

    本文提出一种零部件裂纹形成寿命类比估算方法

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  • The fatigue crack initiation life of 300M steel is experimentally investigated and a simple method for predicting the fatigue crack initiation life of materia is offered.

    测定了300M缺口疲劳寿命曲线,给出了估算疲劳始裂寿命的方法

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  • Fatigue crack initiation is an important period in the whole fatigue life. The damage regularity of crack initial period cannot estimate with fracture mechanics which is used in large crack.

    疲劳裂纹萌生阶段整个疲劳破坏过程中占有极为重要地位,而萌生阶段的裂纹体损伤规律长裂纹断裂力学方法无法确定的。

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  • Fatigue crack initiation is an important period in the whole fatigue life. The damage regularity of crack initial period cannot estimate with fracture mechanics which is used in large crack.

    疲劳裂纹萌生阶段整个疲劳破坏过程中占有极为重要地位,而萌生阶段的裂纹体损伤规律长裂纹断裂力学方法无法确定的。

    youdao

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