Immersion ultrasonic testing of surface cracks on thermal barrier coatings

被引：0
|
作者：
Zhang J. [1 ]
Xiao J. [1 ]
Gao S. [1 ]
Gao S. [1 ]
Li Y. [1 ]
Tang W. [1 ]
Nan Q. [1 ]
机构：
[1] Gas Turbine Department, Xi'an Thermal Power Research Institute Company Limited, Xi'an
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2019年 / 34卷 / 06期
关键词：
C scan; Echo path difference; Immersion ultrasonic testing; Surface crack; Thermal barrier coatings(TBCs);
D O I：
10.13224/j.cnki.jasp.2019.06.005
中图分类号：
学科分类号：
摘要：
In order to effectively detect the surface cracks on thermal barrier coatings (TBCs), the applicability of immersion ultrasonic testing method was studied. The TBCs samples were fabricated by the air plasma spray (APS), which was most commonly used in the TBCs process. The surface cracks with different depth, width and length were characterized by echo path difference and C scan image. Results indicated that the substrate materials had no obvious influence on the immersion ultrasonic testing results. By optimizing the detection parameters and selecting the instruments and probes properly, the surface crack with the depth of 0.1mm and the length of 2mm can be detected effectively by the immersion ultrasonic testing method. The length and depth of the surface cracks on TBCs can also be achieved by immersion ultrasonic testing method, make it an effective way to solve the TBCs surface cracks detection problem. © 2019, Editorial Department of Journal of Aerospace Power. All right reserved.
引用
收藏
页码：1217 / 1224
页数：7
相关论文
共 24 条
  • [1] Padture N.P., Gell M., Jordan E.H., Thermal barrier coatings for gas-turbine engine applications, Science, 296, 5566, pp. 280-284, (2002)
  • [2] Guo H., Gong S., Xu H., Research progress of new high/ultra-high temperature thermal barrier casting and processing technologies, Acta Aeronautica et Astronautica Sinica, 35, 10, pp. 2722-2732, (2014)
  • [3] Zhong Z., Quantitative failure assessment for surface cracking and interface delamination of thermal barrier coatings by acoustic emission, (2013)
  • [4] Evans A.G., Mumm D.R., Hutchinson J.W., Et al., Mechanisms controlling the durability of thermal barrier coatings, Progress in Materials Science, 46, 5, pp. 505-553, (2011)
  • [5] Pomeroy M.J., Coatings for gas turbine material and long term stability issues, Materials and Design, 26, 3, pp. 223-231, (2005)
  • [6] Mercer C., Faulhaber S., Evans A.G., Et al., A delamination mechanism for thermal barrier coatings subject to calcium-magnesium-alumino-silicate(CMAS) infiltration, Acta Materialia, 53, 4, pp. 1029-1039, (2005)
  • [7] Jiang P., Fan X., Sun Y., Et al., Competition mechanism of interfacial cracks in thermal barrier coating system, Materials and Design, 132, pp. 559-566, (2017)
  • [8] Zhou Y., Tonomori T., Yoshida A., Et al., Fracture characteristics of thermal barrier coatings after tensile and bending tests, Surface and Coatings Technology, 157, 2-3, pp. 118-127, (2002)
  • [9] Chen Z., Wang Z., Zhu S., Tensile fracture behavior of thermal barrier coatings on superalloy, Surface and Coatings Technology, 205, 15, pp. 3931-3938, (2011)
  • [10] Qian L., Zhu S., Kagawa Y., Et al., Tensile damage evolution behavior in plasma-sprayed thermal barrier coating system, Surface and Coatings Technology, 173, 2-3, pp. 178-184, (2003)
123