• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索

作者:

Song Guorong (Song Guorong.) | Yan Tianting (Yan Tianting.) | He Cunfu (He Cunfu.) (学者:何存富) | Yang Shen (Yang Shen.) | Lu Yan (Lu Yan.) | Wu Bin (Wu Bin.)

收录:

Scopus SCIE

摘要:

Thermal barrier coatings (TBCs) have been widely used in gas turbine engines in order to protect the substrate metal alloy against high temperature and to enhance turbine efficiency. Thermal effects in the work process will produce a certain stress to induce the metal substrate surface defects such as cracks, which affect thermal conductivity of TBCs. Therefore, it is necessary to detect the cracks in order to ensure the quality of TBCs. In this paper, an approach for microwave non-destructive evaluation of surface crack on the substrate under thermal barrier coatings will be presented. The relationship between reflection coefficient and defects of TBCs were studied, based on the propagation feature of microwave isonified through multi-layer. A network analyzer operated in the frequency range of 26.5 GHz to 40 GHz was used to measure the reflection coefficient. Scanning images were obtained by using phase difference and amplitude at the optimum detection frequency. The results indicate that the amplitude, and the phase difference of the reflection coefficient, can represent the defects under TBCs using microwave non-destruction evaluation when the stand-off distance is suitable. The experimental setup that validates the microwave non-destructive inspection of TBCs is presented, and the feasibility to evaluate the cracks on the substrate surface using microwave non-destructive evaluation is verified in this paper.

关键词:

surface crack phase difference thermal barrier coatings (TBCs) Microwave non-destructive evaluation

作者机构:

  • [ 1 ] [Song Guorong]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing, Peoples R China
  • [ 2 ] [Yan Tianting]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing, Peoples R China
  • [ 3 ] [He Cunfu]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing, Peoples R China
  • [ 4 ] [Yang Shen]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing, Peoples R China
  • [ 5 ] [Lu Yan]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing, Peoples R China
  • [ 6 ] [Wu Bin]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing, Peoples R China

通讯作者信息:

  • [Song Guorong]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing, Peoples R China

电子邮件地址:

查看成果更多字段

相关关键词:

来源 :

JOURNAL OF MICROWAVE POWER AND ELECTROMAGNETIC ENERGY

ISSN: 0832-7823

年份: 2015

期: 2

卷: 49

页码: 69-75

1 . 5 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:174

JCR分区:3

中科院分区:4

被引次数:

WoS核心集被引频次: 12

SCOPUS被引频次:

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 0

在线人数/总访问数:345/4976884
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司