The maximal tension stresses in surface and base between induced crack have been obtained by parametric analysis.
通过结构参数分析掌握了预切缝间面层、基层中最大拉应力的分布规律。
Welding hydrogen induced crack (HIC) is a kind of hydrogen damage of metal during welding of high strength low alloy steel.
焊接氢致裂纹是金属氢损伤在焊接中的一种表征。
From the model, the critical effect tensile stress for the initiation of hydrogen induced crack along grain boundaries has been derived.
由该模型推导出氢致沿晶裂纹萌生时的临界有效拉应力。
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.
粗晶组织比细晶组织的裂纹偏折更大，粗糙度诱发闭合效应更强，因而裂纹扩展较幔。
The effect of thermal induced crack on sediment rock is discussed. The methods of acoustic measurement and nuclear magnetic resonance technology are applied for detection of the crack.
研究热开裂对储集岩石的物性影响，系统地考察了声学检测、磁共振技术等方法在检测岩石热开裂中的效果。
Then the structural accident of total section drive-through type crack is caused in arch frame top chord, which is induced by hoisting and detection using pulley arbitrarily.
铜绿山矿某三铰拱屋架单轨吊梁结构体系，因技术改造增加设备简体重量，随意用滑轮组起吊检修，导致拱架上弦全截面贯通式开裂的结构事故。
The result shows that the plastic strain at the heel region induced by wire bonding process, molding process and the thermal stress and strain in solder reflow are the main causes of heel crack.
结果显示由于引线键合工艺、注塑工艺以及回流焊中封装体各部分不同的热膨胀系数引起的热应力和塑性变形是产生引脚跟断裂的主要因素。
The results shows that crack initiation induced by particles of additives or fillers.
结果表明，裂纹萌生是由较大的第二相颗粒引起的。
According to different failure mechanism and displaying part, the failure modes are divided into plate end debonding failure and intermediate crack induced interfacial debonding failure.
这种粘结破坏按形成机理及破坏部位的不同可分为板端剥离破坏和跨中受弯裂缝导致的粘结破坏。
Fatigue crack propagation behaviour under variable amplitude loading is significantly influenced by load history induced sequence effects.
导致加载序列作用的加载历史极大地影响着变幅加载下的疲劳裂纹扩展行为。
The monitoring method and results for the vibration and crack induced by blasting for Daping mucking tunnel of Chongqing city express-railway are briefly presented.
简述重庆市快速轨道交通大坪出渣支洞爆破施工过程中爆破振动测试及建筑裂缝的监测方法及成果。
The latter is the "water wedging" action induced by entering of water into the crack.
后者是库水进入裂缝后形成的足够强的“水楔”作用。
The crack is induced mainly by poor metallurgical quality of the shaft and the crack that occurred on the shaft surface before surface treatment.
零件冶金质量差，且表面处理前零件表面存在裂纹，是涡轮轴产生裂纹的原因。
Once the temperature difference was higher than a certain number, the bending hoop stress induced by it made the welding crack of pipeline elbow explode.
当温差超过一定值时，由它所引起的弯曲环向应力使管道弯头焊缝爆裂。
Mechanism of inner crack healing induced by diffusion reaction is accepted by people more and more.
反应导致内裂纹的热愈合是目前普遍被接受的机理。
The result indicated that the failure cause of the stainless steel spiral pipe is the stress corrosion crack induced by Cl- ion.
结果表明，不锈钢盘管失效的原因是氯离子引起的应力腐蚀开裂所致。
Then the interaction roles between the flaws gradually become stronger and stronger, and principally, the secondary cracks are induced to extend towards the direction opposite to wing crack.
随着各裂纹间相互作用的加强，会引起次生裂纹在预置裂隙端部附近反向扩展的现象，并形成一种新的断裂模式——包裹式反翼裂纹。
The micro crack behavior in ice is the key factor for describing and explaining ice-induced self-excited vibration.
冰内部的微裂纹行为是解释与描述冰致自激振动的关键要素。
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.
过载效应是裂尖钝化、裂尖附近残余压应力和裂尖尾部塑性诱导闭合等共同作用的结果。
Aiming at brazing crack induced by thermal stress during the process of brazing, finite element method was used to analyze the residual stress of joints between the cemented carbide cirque and steel.
针对硬质合金在钎焊冷却过程产生很大的热应力而导致钎焊裂纹这一问题，采用有限元分析方法对硬质合金圆环与钢基体钎焊时冷却过程中的残余应力的分布情况进行模拟。
The induced stress of initial damage zone results in the redistribution of surrounding rock stress when the micro-crack closes after hydraulic fracture.
水力压裂后，当微裂缝闭合时初始损伤带的诱导应力导致围岩应力重新分布。
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.
室温蠕变对裂纹扩展产生延滞的原因主要是裂纹闭合，同时裂尖钝化、裂纹偏折及形变诱发马氏体的形成也会起到一定的作用。
The experiments indicate that the control parameters of crack development induced by hydraulic fracturing have practical meaning for improving the effect of prefracturing design for hard top coal.
试验表明，本文结果中水压裂缝扩展控制参数对改善顶煤预裂设计效果具有实际意义。
The general problem of half-pipe jacket is the leakage of the welding line induced by crack.
半圆管夹套设备最常见的问题是夹套焊接部位开裂引起泄漏。
It is concluded that, the residual stress induced by cold expansion can maintain enough strength to prevent and retard fatigue crack initiation and growth in rail bolt hole.
结果表明，冷扩张过程所引入的切向残余压应力能保持足够的强度，以对钢轨螺栓孔起到显著的防裂和止裂作用。
It exhibits the viscous effect under dynamic loading case, and the effect strengthens with the growth of the micro-crack density induced by the meso-damage of material.
饱和混凝土中孔隙自由水的存在对材料的力学性能有显著的影响，动态工况中主要表现为自由水的粘性效应，且该效应随细观损伤引起的微裂纹密度的改变而变化。
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.
在此模型中，裂尖的三维约束状态显著影响超载塑性区，从而显著影响裂纹的闭合和扩展速率。
Subcritical crack growth is one of the main causes of time-induced failure in rock engineering.
亚临界裂纹扩展是岩体工程破坏时间效应的原因之一。
Subcritical crack growth is one of the main causes of time-induced failure in rock engineering.
亚临界裂纹扩展是岩体工程破坏时间效应的原因之一。
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