• The typical quantitative models on the crack closure are introduced and commented as well.

    此外,疲劳裂纹闭合现象几种有代表性定量模型了介绍评论

    dict.cnki.net

  • The crack closure is dynamically measured by means of interferometric strain-displacement gauge(ISDG).

    激光干涉应变-位移测量仪(ISDG)进行了裂纹闭合点的高精度动态测量。

    dict.cnki.net

  • Compressive residual stress increases the crack closure effect at the notch and may lead to a non-pr...

    残余应力使缺口处裂纹合力增大甚至出现非扩展裂纹。

    www.chemyq.com

  • The fatigue crack closure and fatigue crack growth rate in the high strain region of SCT specimen are studied.

    本文研究了SCT试样应变区的疲劳裂纹闭合效应疲劳裂纹扩展速率

    dict.cnki.net

  • The results turn out to be that the short cracks exhibit severe crack deflection and week crack closure effect.

    试验和分析结果表明,裂纹扩展的偏折强烈裂纹闭合效应较小。

    dict.cnki.net

  • Compressive residual stress increases the crack closure effect at the notch and may lead to a non-propagating crack.

    残余应力使缺口处裂纹合力增大甚至出现扩展裂纹。

    www.ams.org.cn

  • The simulating results have indicated that: the crack closure effect is obviously influenced by the fatigue crack length.

    建立裂纹扩展模型的时候,要考虑到裂纹长度裂纹闭合效应的影响。

    dict.cnki.net

  • Having excluded the effect of welding residual tresses on crack closure, fatigue crack growth rates of the welded join...

    排除焊接残余应力导致裂纹闭合效应后焊缝及热影响疲劳裂纹扩展速率与基材相当。

    www.chemyq.com

  • The high fatigue properties were found to be related with higher crack closure stress, rough fracture surface and tortuousity of crack path.

    较高疲劳性能裂纹尖端闭合应力断口表面粗糙度以及裂纹扩展路径弯折程度有关

    dict.cnki.net

  • The strain energy release rate of the crack propagation was calculated by using virtual crack closure technique, and fatigue life was forecasted.

    采用虚拟裂纹闭合技术计算裂纹扩展应变释放裂纹扩展寿命进行计算。

    www.dictall.com

  • The theoretical analysis indicated that the crack closure effect was mainly responsible for the change of crack growth retardation in corrosion fatigue.

    分析表明,塑性诱发裂纹闭合腐蚀条件下的变化造成超载后裂纹扩展规律变化的主要原因之一。

    dict.cnki.net

  • It turns out that crack closure is the main reason for retardation, and crack tip blunting, crack deflection and strain-induced martensite would reinforce it.

    室温变对裂纹扩展产生延滞的原因主要裂纹闭合,同时钝化、裂纹偏折形变诱发马氏体的形成也会起到一定的作用。

    zuci.chaziwang.com

  • On the base of large experimental data set, the influence of effective pressure on rock velocities is analyzed with regression method and the theory of crack closure.

    根据大量实验资料,本文分析砂岩样品的纵横波速度有效压力的关系,对实验结果进行了回归分析,并用裂隙闭合理论进行了解释。

    www.lunwenwa.com

  • Crack closure of base metal is caused by the residual plastic plastic deformation remaining in the wake of an advancing crack tip and is not as significant as in welded specimen.

    管线钢基材裂纹闭合现象较小,闭合原因裂纹尖端尾部残余塑性变形

    dict.cnki.net

  • The short cracks deflect more severe in coarse grain structure than in fine grain one, result in roughness induced crack closure effect, therefore exhibit slow crack growth rate.

    组织晶组织裂纹偏折大,粗糙度诱发闭合效应更强,因而裂纹扩展较幔

    dict.cnki.net

  • The overload effects were controlled by various factors such as crack blunting, residual compressive stress ahead of the crack tip and crack closure induced by wake zone plasticity.

    过载效应钝化、裂尖附近残余应力裂尖尾部塑性诱导闭合共同作用结果。

    dict.cnki.net

  • In this model, the plastic zone induced by the overload is affected by the three-dimensional constraints, and it leads to significant influence on the crack closure and growth rate.

    模型中,三维约束状态显著影响超载塑性从而显著影响裂纹的闭合扩展速率

    hkxb.buaa.edu.cn

  • On the other hand, the stronger short crack effect is exhibited, which is attributed the dependent mentality of closure effect on crack wake.

    同时,显露出裂纹效应因裂纹闭合效应尾迹依赖性

    dict.cnki.net

  • Fatigue crack propagation in a compressive residual stress field can be characterized with the closure effect.

    疲劳裂纹残余应力场中的扩展借助于裂纹闭合力来描述

    dict.cnki.net

  • The main causes of bottom flat crack are analyzed, mainly including radial force generated by closure strands stretching in middle span , non-structural elements and construction effects , etc.

    分析了导致底板崩裂主要原因,主要包括合龙拉时产生径向力作用非预应力钢筋构造因素施工影响

    www.xdjtjs.com

  • The main causes of bottom flat crack are analyzed, mainly including radial force generated by closure strands stretching in middle span , non-structural elements and construction effects , etc.

    分析了导致底板崩裂主要原因,主要包括合龙拉时产生径向力作用非预应力钢筋构造因素施工影响

    www.xdjtjs.com

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