Part of the crack is cut by drill, the crack surface is dust-colour under naked eyes.
钻孔截取裂纹局部，肉眼可见裂纹表面呈暗褐色。
There is a view as long as the reversible energy is consumed, won't produce new crack surface.
有一种观点只要可逆能量消耗，不会产生新的裂纹面。
A crack surface displacement of four-point-bend specimen under three types of loading is studied in this paper.
研究了四点弯曲型试件在各种类型载荷作用下的裂纹面位移，并考虑了裂纹尖端塑性区对它的影响。
The former is collocated exclusively on the uncracked boundary, and the latter on one side of the crack surface.
位移边界积分方程的源点配置在非裂纹边界上，面力边界积分方程的源点配置在裂纹面上。
During fracture propagation driven by detonation gas in oil well, dynamic response of crack surface under the gas pressure results in fast fracturing.
油井爆生气体对岩石劈裂作用过程，是裂缝面对动态荷载响应并使其发生动态扩展的过程。
The main conclusion is that: When the temperature field in the crack surface is uniform, the energy release rate will decrease with time, until it reaches a lower limit value.
其主要结论是：当裂纹面内的温度埸恒定时，能量释放率将随时间而减少，直至某一较低的极限值。
The problem of a cylindrical interface crack is reduced to a system of singular integral equations with the aid of two unknown dislocation functions at the interface crack surface.
以裂纹面上的位错函数为未知量将圆柱型界面裂纹问题化成一组奇异积分方程的求解问题。
It is found that the electric displacement intensity factors for the permeable crack surface conditions are much smaller than the results for the impermeable crack surface conditions.
与不可导通电边界条件相比，导通裂纹表面的电位移强度因子比不可导通裂纹的电位移强度因子要小许多。
The crack growth rate without the influence of crack surface contact was determined by extrapolating the relationship between the crack growth rate and the crack extension to the zero crack length.
通过外插裂纹扩展速率与裂纹长度之间的关系， 可近似得到裂纹长度为零时无裂纹面滑移接触影响的裂纹扩展速率。
By the principle of superposition fictitious stress on any individual crack surface in infinity can be resolved and also its value of stress intensity factor in infinity or finite body is obtained.
由迭加原理，可分离出任一单个裂纹面在无限大板中的虚拟应力，从而求出有限或无限域中各条裂纹的应力强度因子值。
The formulae for calculating SIF and fatigue life of surface crack at weld toe of the high-strength steel under the combination stresses were given out.
给出了高强钢焊趾表面裂纹在压弯组合应力下应力强度因子及其疲劳寿命计算式。
Therefore, the roll surface is extremely hard and brittle and it is thermally unstable. In addition, it is highly crack sensitive because of the high hardness.
因此，辊子表面有极高的硬度、脆性及热不稳定性。另外，由于高的硬度使之具有高的裂纹敏感性。
The formulae for calculating SIF and fatigue life of surface crack at weld toe of the high-strength steel under the combination stresses have been presented.
给出高强钢焊趾表面裂纹在压弯组合应力下应力强度因子及其疲劳寿命计算式。
In contact with a hot surface, naphtha petroleum fractions crack to produce ethylene and propylene.
石脑油馏份与一个热表面接角，就裂解而得到乙烯和丙烯。
The experiment shows that fusion welding reinforcement could proceed on the surface with crack of the die after crack arresting.
脉冲放电止裂后，可对带有裂纹的表面进行强化处理。
Surface crack of steel components was repaired with two bundle of laser.
采用双光束激光修复碳钢零件的表面裂纹。
Plenty of oxidation etching pits are found on the surface of the specimen after the thermal fatigue test, and the surface principal crack is prone to propagate through these etching pits.
实验结果发现，试样表面出现大量的氧化腐蚀坑，表面主裂纹优先通过这些腐蚀坑扩展。
Improper rework practices can result in unscheduled maintenance or surface damage that causes crack initiation.
翻修不当可能会造成非计划性维修和表面损伤从而造成裂纹。
Crack-free surface that is formed in ductile regime of glass can be obtained under conventional cutting conditions if the tool parameters are chosen properly.
如果刀具参数选取得当，能在常规切削用量下获得在玻璃的塑性域内形成的、无微裂纹的加工表面。
All of these tests are used to detect surface crack discontinuities.
所有这些测试是用来检测表面裂缝不连续性。
His voice still held a remnant of its wonted cool drawl but beneath the words she could feel violence fighting its way to the surface violence as cruel as the crack of a whip.
他的声音仍然保持着一点像往常那样冷静而缓慢的调子，但是她能感觉到里面尽力压抑着的那股凶暴劲儿，那股像抽响的鞭子一样残忍的劲儿。
You're not gonna be inconvenienced by that. Right, surface crack. I've got a plastic surgeon for that.
这些小型地震真的让我很紧张，得了吧，只是地表的一些小裂缝而已。
The paper presents the design criteria and method for arresting crack and burst of the internal pressured vessels of big pipes with circular surface crack by arched strip and wound wire.
本文介绍了含有表面环向裂纹的内压简体及大型管道采用轴向加弧形务板与钢丝缠绕的止裂、抑爆设计原则及设计方法。
For surface crack in pipe, this paper presents the finite element model including line spring element that is used for J integration calculation, as well as numerical examples.
对管道上的表面裂纹采用线弹簧单元，建立了裂纹管道J积分计算的有限元模型，给出了J积分的计算实例。
The high fatigue properties were found to be related with higher crack closure stress, rough fracture surface and tortuousity of crack path.
较高的疲劳性能与裂纹尖端闭合应力、断口表面粗糙度以及裂纹扩展路径弯折程度有关。
Then the K resemble theory was used to translate the surface crack to middle through crack.
并利用K相似原理，把表面裂纹问题转换为中心贯穿裂纹问题；
No layering, crack, uneven surface for the product and it should be smooth black solid block.
产品应无分层、无开裂、无不均匀表面、细腻的黑色块状固体。
The wave propagation and power flow characteristics of a shell-type pipe with circumferential surface crack are investigated and the method for crack detection is proposed.
研究在外力激励下含有环向表面裂纹损伤的壳式管道的波传播与功率流特性，并给出裂纹识别方法。
The wave propagation and power flow characteristics of a shell-type pipe with circumferential surface crack are investigated and the method for crack detection is proposed.
研究在外力激励下含有环向表面裂纹损伤的壳式管道的波传播与功率流特性，并给出裂纹识别方法。
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