玻璃钢储罐声振信号传播规律研究  

STUDY ON PROPAGATION LAW OF VIBRATION AND ACOUSTIC SIGNALS OF FRP TANKS

作　　者：陈健飞 谢珂铭 杨勇[3] 柳言国[3] 周先军 CHEN Jian-fei;XIE Ke-mings;YANG Yong;LIU Yan-guo(College of Chemical Engineering,China University of Petroleum,Qingdao 266580,China;Sinopee Shengli Oilfield Branch Company,Dongying 257000,China;Mechanical and Electrical Engineering,China University of Petroleum,Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)化学工程学院,青岛2665800 [2]中国石油大学(华东)机电工程学院,青岛266580 [3]中国石化股份胜利油田分公司技术检测中心,东营257000

出　　处：《玻璃钢／复合材料》2018年第7期103-107,共5页Fiber Reinforced Plastics/Composites

摘　　要：针对大型储罐被动检测声发射信号弱的问题,根据声振法检测原理,选择常用的激励原材料(尼龙材料、不锈钢材料、塑料)对10 mm壁厚环氧树脂玻璃钢储罐进行主动敲击试验,筛选不锈钢作为最优激励源材料,设计了弹簧锤工装。利用设计工装对实验室玻璃钢储罐进行声振试验,对试验数据进行分析。结果表明:水平方向上的敲击信号传播速度最快且幅值衰减最小;随着方向角度增加,波速逐渐减小,幅值衰减速率逐渐增加;得到了声振信号波速传播模型、幅值衰减规律;总体上声振信号传播比被动声发射信号传播距离远,为玻璃钢储罐缺陷检测奠定了基础。The problem of weak acoustic emission signal for passive detection of large tank is studied. According to the detection of acoustic vibration principle,the incentive raw materials（ nylon,stainless steel,plastic） were selected to do active tapping test on the 10 mm wall thickness epoxy resin glass fiber reinforced plastic storage tank.Based on the acquisition of signals using acoustic emission equipment,stainless steel was selected as optimal material,and a spring hammer frock was designed. Acoustic vibration test of FRP tanks in laboratory was carried out by using spring hammer,the results show that the hitting speed is the fastest and the amplitude attenuation is minimum in the horizontal direction. As the direction angle increases,the wave velocity decreases gradually and the amplitude attenuation rate increases gradually. The propagation model and amplitude attenuation law of acoustic and vibration signals are obtained. Overall,the sound vibration signal propagation distance is longer than the passive acoustic emission signal,which lays the foundation for the later research on the inspection of FRP tank defects by acoustic vibration method.

关 键 词：玻璃钢 声振法 弹簧锤 声速 幅值衰减 

分 类 号：TB332[一般工业技术—材料科学与工程]