The sensitivity of the first four mode shapes to crack location and depth are discussed.
并分析和讨论了悬臂梁前四阶模态对损伤的敏感性。
An experimental cantilever beam example shows that the method can detect crack location with satisfactory precision.
对悬臂梁结构测试例子的分析表明，该方法能较好地识别具有单个裂纹结构的裂纹位置。
The degree of cracking tolerated before fracture varies by component, crack location, and component loading conditions.
断裂之前承受裂纹的能力依部件、裂纹位置和部件承载情况的不同而论。
The effects of crack depth, crack location on dynamic unstable regions of the system are discussed and compared with previous data.
文中还讨论了裂纹深度、裂纹所处的位置对系统动力不稳定区域的影响，且与有关文献的结果作出了比较。
It is very valuable that localize the micro-crack location in rock by AE location method to investigate the process of rock failure and predict the final failure position.
用声发射(AE)定位技术确定岩石内部微破裂的发生位置，研究岩石的破坏过程，对预测岩石最终的破坏位置具有重要的实用价值。
As the sound ripples through the structure it arrives at different sensors at different times, which can be used to work out the location and severity of the crack.
因为声音呈波形在飞机构造中传播，它在不同的时间到达不同的传感器，这点能用来算出裂纹的位置和严重程度。
Corrosion pitting also can lead to fatigue crack initiation depending on the component, the location of pitting, and cyclic loading conditions.
腐蚀斑点还会因不同的部件、斑点的位置和循环载荷状况，导致一些不同的疲劳裂纹。
Location is one of the key problems in pavement crack detection and recognition system.
裂缝定位是路面裂缝检测与识别系统的关键问题之一。
The location of the crack can be found by the change of the apparent resistivity, based on four-probe electrical resistivity measuring technique.
基于四探针电阻率测量技术，依据试验测得的混凝土表观电阻率变化确定裂缝位置。
Rotor crack is a very dangerous and frequent fault in rotating machine, and crack detection and location is a always research direction in the field of fault diagnosis.
转子裂纹是旋转机械中常见且危险的一种故障，转子裂纹的有效识别和定位也是故障诊断领域一直研究的课题。
So the strain modal broken line drawing method is presented for determning the location of the crack on a structure.
从而提出了应用应变模态折线图来估计梁结构上裂纹位置的方法。
The effect of the REBAR on ultrasonic crack detection data was analyzed qualitatively by time-distance relation and quantitatively by formula. The method was also used for the location of REBAR.
利用时距关系定性和公式定量分析钢筋对超声检测裂缝测试数据的影响，并可对钢筋位置作出判断。
The effect of the length, the shape, and the location of a crack on the vibration frequencies and the directivity patterns of the sound field radiated from the plate are investigated.
探究了裂纹长度、形状、位置对薄板振动频率和辐射声场指向性特征的影响规律。
The analysis results have shown that creep damage and crack initiation behaviour depend strongly on the void location and crystallographic orientation.
计算结果表明：晶体取向和孔洞位置对试样蠕变损伤和裂纹萌生行为有着显著的影响。
Porous concrete will shrink, so it is necessary to deal with its shrinkage character firstly when studying the problems of joint location and reflection crack of porous concrete base.
由于多孔混凝土存在收缩现象，为研究多孔混凝土基层路面的接缝设置及反射裂缝问题，必须首先研究多孔混凝土的收缩特性。
The vibration testing method on the early crack flaw detection was discussed, but it couldn't give the location and size of the crack flaw.
讨论了振动筛下横梁裂纹的振动检测方法，但尚无法确定裂纹的位置和大小。
In view of structure-borne sound, a diagnosis method for the detection and location of the peripheral surface crack of circular plates by means of vibrational power flow is investigated.
从结构噪声的观点，利用振动功率流方法对圆板在集中力作用下的周向表面裂纹进行了诊断研究。
The crack at the middle of the track bed has more effect on dynamic bending stress of track bed and dynamic stress of subgrade than crack at other location.
道床动弯应力和路基面动应力随车辆速度的增大而增大，道床中部裂纹对道床动弯应力和路基面动应力的影响更为明显。
Lots of acoustic emission during the entire loading are recorded. The recording is able to indicate the occurrence time, location and magnitude of every damage (micro-crack) in the specimen.
实验过程中记录到大量的声发射信息，它能够反映岩石试件内部每一个损伤(微裂纹)发生的时间、地点和强度。
In this paper, the boundary element method for calculating surface crack is studied and suitable location or the singular isoparametric elements, is presented.
本文研究了计算半随圆表面裂纹应力强度因子的边界元方法。
With the increase of external loading, AE instrument can exactly locate the position of crack initiation and propagation; and AE location events can reflect the stable crack propagation process.
随着加载的进行，声发射仪器精确地定位出其裂纹初始位置、扩展方向，并直观地反映出其内部裂纹稳定扩展过程。
It is found that there exists an obvious stress concentration at the location where the bridge crack takes place.
分析发现应力集中明显，且其部位与模桥裂纹位置相吻合。
It is found that there exists an obvious stress concentration at the location where the bridge crack takes place.
分析发现应力集中明显，且其部位与模桥裂纹位置相吻合。
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