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首页> 外文会议>Conference on Sensors and Their Applications; 20030902-20030904; Limerick; IE >A microcontroller-based sensor for measuring accumulated fatigue damage in welded steel structures
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A microcontroller-based sensor for measuring accumulated fatigue damage in welded steel structures

机译：基于微控制器的传感器，用于测量焊接钢结构中的累积疲劳损伤

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摘要

A sensor system is described that performs long-term monitoring of fatigue damage in load-bearing welded components on structures such as earth-moving vehicles. The sensor is a steel coupon containing a fatigue pre-crack, and is permanently attached to the structure. Cyclic stresses induced in the coupon by in-service loading on the component cause the crack to lengthen. Monitoring the crack length gives a measure of the fatigue accumulated by the structure, allowing prediction of its remaining life. A battery-powered microcontroller system embedded within the sensor achieves this. The data stored on-board can be downloaded to a PC for analysis.
机译：描述了一种传感器系统，其对诸如土方车辆之类的结构上的承重焊接部件进行疲劳损伤的长期监控。该传感器是包含疲劳预裂纹的钢制试样，并永久固定在结构上。由于部件在使用中的负载而在试样中引起的循环应力会导致裂纹延长。监测裂纹长度可以测量结构累积的疲劳程度，从而可以预测其剩余寿命。嵌入传感器中的电池供电微控制器系统可以实现这一目标。机载存储的数据可以下载到PC进行分析。

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