In this paper, the acoustic emission technique was used to study the signal during the tensile damage of 321 stainless steel for solar thermal power generation. It was found that the peak frequency can effectively distinguish different types of signals during the tensile test. The interference signals generated during the tensile test are effectively resolved by combining the amplitude-peak frequency distribution map and the energy-peak frequency distribution map. The amplitude-time map of the acoustic emission signal is successfully divided into three stages by using peak frequency parameter.

中文翻译：

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声发射太阳能热发电用321不锈钢拉伸损伤研究

本文采用声发射技术对太阳能热发电用321不锈钢拉伸损伤过程中的信号进行研究。结果表明，在拉伸试验过程中，峰值频率可以有效区分不同类型的信号。通过幅值-峰值频率分布图和能量-峰值频率分布图相结合，有效解决拉伸试验过程中产生的干扰信号。利用峰值频率参数成功地将声发射信号的幅时图划分为三个阶段。