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。

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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。

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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。

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The agency said on Friday workers "found a further crack in a sensitive location which requires us to keep the viaduct closed until the repair is complete".

BBC: M4 closure: Drivers told to stay away

WifiSLAM, which is roughly two years old, is among a slew of technology companies trying to crack the problem of how to detect a mobile-phone user's location when the user is indoors and traditional GPS technology doesn't work.

WSJ: Apple Buys Indoor GPS Specialist

These were the direct ancestors of the "co-location" and "direct data feeds" that have enabled high-frequency traders to get first crack at market prices on today's stock exchanges.

WSJ: New Twist Is Added to an Age-Old Saga