Mode and frequency selections of ultrasonic Lamb waves for creep damage detection in Titanium alloy
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℃ 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％) Cl. This study would provide a reference for creep damage detection in titanium alloy of engineering applications using ultrasonic Lamb waves.
Ultrasonic Lamb waves Ti60 alloy Creep damage
JuanYe Fu-Zhen Xuan Yanxun Xiang
National Technology Research Center on PVP Safety Engineering, Hefei General Machinery Research Inst School of Mechanical and Power Engineering, East China University of Science and Technology, Shangha
国际会议
2011 International Symposium on Structural Integrity 2011国际结构完整性学术研讨会--核工程结构完整性技术 ISSI 2011
合肥
英文
371-376
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）