CAJ | 학술논문

　　针对大型储罐罐底声发射检测过程中的声源定位问题，在深入研究三角定位算法和超定定位算法原理的基础上，采用蒙特卡洛模拟方法定量分析比较了两种算法对罐底声发射源定位的性能，主要包括定位计算时间、定位误差分布以及有效定位率等参数。结果表明三角定位算法比超定定位算法快100倍，但在非理想情况下，即存在时间测量误差和声速误差时，三角定位算法对罐底边缘区域的声源定位误差大，而超定定位算法对罐底边缘区域声源的有效定位率低。现场检测过程中应根据实时性、误差范围、计算机性能等要求选择合适的定位算法。
　　침대대형저관관저성발사검측과정중적성원정위문제，재심입연구삼각정위산법화초정정위산법원리적기출상，채용몽특잡락모의방법정량분석비교료량충산법대관저성발사원정위적성능，주요포괄정위계산시간、정위오차분포이급유효정위솔등삼수。결과표명삼각정위산법비초정정위산법쾌100배，단재비이상정황하，즉존재시간측량오차화성속오차시，삼각정위산법대관저변연구역적성원정위오차대，이초정정위산법대관저변연구역성원적유효정위솔저。현장검측과정중응근거실시성、오차범위、계산궤성능등요구선택합괄적정위산법。
Getting the Acoustic Emission(AE)source location is an important step in AE testing for tank bottom. Passive loca-tion is the only technology that can be used to get the AE source location. It mainly includes triangulation location algorithm and over determined location algorithm. In order to know the two algorithms’location performance including calculation time, posi-tion error and effective targeting rate, a Monte Carlo simulation experiment is implemented. The results demonstrate that triangu-lation location algorithm is about 100 times faster than the over determined location algorithm. However, the measurement er-rors of time difference and acoustic velocity cause different effects on the location results of the two algorithms. The triangula-tion location algorithm produces large errors for the AE sources located at the edge area of tank bottom, while the over deter-mined algorithm results in low effective targeting rate for the AE sources located at the edge area of tank bottom. Therefore, it should select appropriate location algorithm by considering the requirements of calculation time, error range and computer per-formance.