数字化声发射技术在潜水器管道泄漏监测中的应用研究

为了研究数字化声发射技术在潜水器管道泄漏监测中的可行性,文章创建了管道泄漏声发射检测系统,提出了应用于潜水器管道泄漏的声发射通道采集控制参数,对潜水器管道泄漏现象进行了试验研究,验证了系统的有效性和实用性。同时通过对管道泄漏声发射信号参数的统计分析和傅里叶变换,获得了潜水器管道泄漏声发射信号的RMS、ASL、能量以及频率等幅频响应特性随传播距离和管道内部压力的变化规律,为在潜水器服役过程中进行声发射实时监测提供物质基础和技术支撑。

Research on the application of digital acoustic emission technique to monitoring pipeline leakage for submersible

In order to study on the feasibility of digital acoustic emission technique to monitoring pipeline leakage for submersible,a combination system was constructed to simulate the acoustic emission pipeline leak detection.Acoustic emission channel acquisition parameters for pipeline leakage of submersible were pro-posed.The effectivity and practicability of system was verified by the experimental investigation of submersible pipeline leakage.Meanwhile,through statistical analysis and Fourier transformation of acoustic emission sig-nal parameters,summarization of change regulation of RMS(root mean square),ASL(average signal level),energy and frequency with propagation distance and pressure was discovered.This study may provide mate-rial foundation and technical support for the acoustic emission real-time monitor to submersible in service.