问题原来出在机身的金属疲劳。
机翼显示出金属疲劳的迹象。
机翼显出有金属疲劳的现象。
让老旧飞机搁浅的一件事就是飞机铝构造因为金属疲劳产生的故障隐患。
One thing that does ground old aircraft is the impending failure of their aluminium structure from metal fatigue.
他汽车上的零件可以经过几千英里的颠簸而不至于产生金属疲劳。
Parts in his automobile take thousands of miles of punishment without becoming tired.
金属疲劳是一个能量耗散过程，其中主要的能量耗散形式包括内耗热和储能。
Fatigue of metals is an energy dissipation process. The main energy dissipation includes the internal friction and the stored energy.
剧烈的颠簸飞行状况可能导致金属疲劳，甚至导致飞机失事，更不必说旅客感觉不舒适了。
Serious bumpy flight conditions may lead to material fatigue and even to aircraft failure, not to speak of passenger discomfort.
本文探讨的方法、建立的函数式以及计算和绘图程序可以推广用于一般金属疲劳试件或三角胶带。
The method proposed, the relation established and the program of computation and plotting can be extended in use to the fatigue testing of common metals or V belts.
本文探讨的方法、建立的函数式以及计算和绘图程序可以推广用于一般金属疲劳试件或三角胶带。
The method proposed, the relation established and the program of computation and plotting can be extended in use to th…
本文探讨的方法、建立的函数式以及计算和绘图程序可以推广用于一般金属疲劳试件或三角胶带。
The method proposed, the relation established and the program of computation and plotting can be extended in …
因此，一个张紧轮应持续时间更长，而被硬软建设能更好地抵御冲击，但将有更大的金属疲劳破坏的机会。
So a tight wheel should last longer and be stiffer while a softer build can resist impacts better but will have greater chance of metal fatigue failures.
根据起重机钢丝绳失效主要是金属疲劳的原理，采用应力-强度干涉模型，对起重机钢丝绳进行了疲劳可靠性设计。
Since the main failure reason of the steel rope is the fatigue of the metal, the fatigue reliability design of the crane steel rope can be executed by means of stress-strength interference model.
在详细的数学推导之后，给出了金属疲劳断裂几率即一个变上限复杂积分的近似解析函数表达式，并与计算机的数值曲线进行了比较。
Following a detailed mathematical derivation a new approximate algorithm for the fatigue fracture of metals is given namely a complicate integral having a changing upper limit.
就在几周前，飞机工程师才发现他们并没有完全了解金属疲劳——四月一日，西北航空公司812航班使用的波音737-300型客机在从凤凰城飞往萨克拉门托的途中发现在机身的上半部有一个五英尺的裂纹，不得不紧急迫降。
Over the past few weeks, aircraft engineers have found they do not know quite as much about metal fatigue as they thought.
还会形成穿透型裂纹，造成镀层下本体金属的疲劳或应力腐蚀裂纹。
Through-thickness cracking also can lead to fatigue or stress corrosion cracking of the base metal beneath the plating.
论述金属离子注入技术在改善材料的疲劳、耐磨性、 氧化等性能方面的应用。
The application of metal ion injection technology for improving metal fatigue resistance and erosion resistance are discussed.
本文提出一种新的热疲劳损伤判据，用以评估金属材料的热疲劳性能。
In this paper a new criterion for thermal fatigue damage was proposed to evaluate the thermal fatigue performances of metallic materials.
通过疲劳断口的电镜扫描试验，证明防爆膜的疲劳破坏是由存在于金属内部的微裂纹和杂质所引起。
The photographs of the sweep electron microscope show that fatigue damage are caused mainly by microcracks and impurities of metal.
起重机的安全寿命取决于其金属结构的疲劳强度。
Safety life of crane was determined by its fatigue intensity of metal structure.
持续的运动甚至是强烈的噪音产生的应力会导致疲劳、不断弯曲的金属出现的裂缝和破损。
The stresses produced by continual movement, and even intense noise, cause fatigue, the cracking and breaking that occurs in metals under constant flexure.
起重机金属结构的强度计算及疲劳分析是十分复杂的问题。
The crane's metal structure intensity calculation and fatigue analysis is a fully complicated problem.
虽然利用金属氧化物电极可以提高其抗疲劳性，但是这种电极不易制备并且会增加漏电流。
Although using metal oxide electrodes can solve the fatigue problem, it is not easy to synthesize and the leakage current can increase.
与金属，木材不会削弱疲劳。
如果都把一个构件的最终断裂作为疲劳破坏的定义，则S - N曲线和裂纹扩展率曲线均是反映金属在疲劳载荷作用下的基本材料特性。
If the failure is defined as the final fracture of a component, then both S-N curves and crack growth rate curves reflect the fundamental material behavior under fatigue loading.
钢结构长期在这种振动的影响下就会导致金属结构疲劳破坏；
It will cause metal structure to fatigue destruction if steel structure is influenced in the vibration for a long time.
本文回顾了各种金属及合金在门坎区附近的疲劳裂纹扩展的机制和特征。
This paper presents a review of the characteristics and mechanisms of fatigue crack propagation at near-threshold range in various metals and alloys.
本文回顾了各种金属及合金在门坎区附近的疲劳裂纹扩展的机制和特征。
This paper presents a review of the characteristics and mechanisms of fatigue crack propagation at near-threshold range in various metals and alloys.
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