Release of acoustic energy during the fatiguing of a rolling-element bearing
Release of acoustic energy during the fatiguing of a rolling-element bearing
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DOI：
10.1016/s0306-2619(99)00002-1
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发表时间：
1999-03-01
期刊：
影响因子：
11.2
通讯作者：
Probert, D
中科院分区：
文献类型：
--
作者：
Bashir, I;Bannister, R;Probert, D
本文建立了一个简单的理论模型，用以描述直升机齿轮箱钢轴承在飞行过程中疲劳裂纹扩展时所产生的声能。当裂纹扩展达到临界时，声脉冲的振幅（在轴承处）和持续时间分别从9.8 × 10（-12）m增加到29.0 × 10（-12）m和从0.1 μ s增加到1 μ s。这种声能的检测和测量可以导致预测相关的裂纹扩展。(C)1999 Elsevier Science Ltd.保留所有权利。
A simple theoretical model has been developed to describe the acoustic energy generated when a fine crack grows in a fatiguing rolling-element steel-bearing in the gearbox of a helicopter during flight. The acoustic-impulse's amplitude (at the bearing) and duration increase from 9.8 x 10(-12) to 29.0 x 10(-12) m, and from 0.1 to 1 mu s, respectively, as the crack growth becomes critical. The detection and measurement of this acoustic energy can lead to the prediction of the associated crack-growth. (C) 1999 Elsevier Science Ltd. All rights reserved.