RESEARCH ON THE ATTENUATION CHARACTERISTICS OF ACOUSTIC EMISSION FROM CORROSION OF TANK BOTTOM PLATE

被引：0
|
作者：
Shen, Yongna [1 ,2 ]
Shen, Gongtian [1 ]
Gan, Pengcheng [1 ]
Zhang, Junjiao [1 ,2 ]
Yuan, Yilin [1 ,2 ]
机构：
[1] China Special Equipment Inspect & Res Inst, Beijing, Peoples R China
[2] Key Lab Nondestruct Testing & Evaluat State Marke, Beijing, Peoples R China
来源：
PROCEEDINGS OF ASME 2022 INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, IMECE2022, VOL 1 | 2022年
关键词：
tank bottom plate; AE attenuation; transport path;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In order to clarify the detection range of acoustic emission technology for the tank bottom plate inspection, the attenuation characteristics of AE signal from lead-break on the tank bottom plate are investigated in this work. First the attenuation of AE signals from the lead-break on the upper surface of the tank bottom plate and that from the lead-break on the lower surface of the tank bottom plate are studied and compared when the tank is empty, which indicates that the upper surface corrosion of the tank bottom plate is much easier to detect than the lower surface corrosion. The weld perpendicular to the AE transport direction contributed much to the attenuation of the AE signals from tank floor. Then, the influence of liquid level on the attenuation and transport path of AE signals from tank bottom plate are investigated when water is added into the tank with a level of 10cm and 70cm, respectively. The liquid changes both the attenuation trend and the transport path of AE signals.
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页数：5
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