Mode and frequency selections of ultrasonic Lamb waves for creep damage detection in Titanium alloy

被引：0
|
作者：
Ye, Juan [1 ]
Xuan, Fu-Zhen [2 ]
Xiang, Yanxun [2 ]
机构：
[1] Hefei Gen Machinery Res Inst, Natl Technol Res Ctr PVP Safety Engn, Hefei 230031, Peoples R China
[2] East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China
来源：
STRUCTURAL INTEGRITY IN NUCLEAR ENGINEERING | 2011年
关键词：
Ultrasonic Lamb waves; Ti60; alloy; Creep damage;
D O I：
暂无
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Ultrasonic Lamb wave techniques have an important application prospect on detecting and evaluating creep damage in material, while it is quite difficult to choose appropriate frequencies and modes. In this paper, stress rupture tests were carried out with a constant load in air at 600 degrees C and 350MPa on Ti60 alloy thin plate by CCSS-3905, in which the duration life is 0, 50h, 100h, 140h, and 180h, respectively. A frequency scanning of Lamb waves in Ti60 thin plate specimens with different creep damages were investigated using RAM-5000 SNAP ultrasound system. The results showed that Lamb modes with the incident angle between 25 and 40 displayed an obvious changes, whose phase velocities were between 4231m/s and 6436m/s, i.e., (67%-102%) C1. This study would provide a reference for creep damage detection in titanium alloy of engineering applications using ultrasonic Lamb waves.
引用
收藏
页码：371 / 376
页数：6
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