20000 m3真空球罐声发射监测与信号源分析
乐开白，左继锋，姚力，马学荣
（中国空气动力研究与发展中心，四川 绵阳 621000）
摘要：针对20000 m3真空球罐及管道系统在开展抽真空试验状态下，对其应力集中部位进行声发射监测及应力应变测试，结果表明，通过干扰噪声排除，结合应力应变测试结果，对信号源进行数据分析，真空试验状态下能够实现真空球罐及管道系统应力集中部位的监测和整体结构失稳性预报，为20000 m3真空球罐及管道系统运行过程中的监控及后期开展检验提供了一种有效的检测和安全状况综合评估方法。
关键词：真空球罐；声发射监测；信号源；安全评估
中图分类号：TJ765.4+1 文献标志码：A doi：10.3969/j.issn.1006-0316.2018.10.013
文章编号：1006－0316 (2018) 10－0056－05
The Acoustic Emission Testing For 20000m3 Vacuum Spherical Tanks and Analysis of Signal Source Data
YUE Kaibai，ZUO Jifeng，YAO Li，MA Xuerong
( China Aerodynamic Research and Development Center, Mianyang 621000, China )
Abstract：Focused on the 20000m3 vacuum spherical tanks and pipeline systems, which are in the condition of vacuum testing, acoustic emission testing and stress test are implemented in the areas of stress concentration. Results show that based on removing noise interference, stress test result and analysis of signal source data, the monitoring for the areas of stress concentration and structure instability, forecast can bi achieved effectively. And then, an effective security evaluation method, which is applied to the online testing and later inspecting of 20000m3 vacuum spherical tanks and pipeline systems, is proposed.
Key words：vacuum spherical tank；acoustic emission testing；signal source；security evaluation
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收稿日期：2018－07－02
作者简介：乐开白（1979－），男，江苏射阳人，本科，工程师，主要从事承压设备检验检测及无损检测评价工作。
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