Acoustic emission studies on thermal spray materials

Chung Kwei Lin, Christopher C. Berndt

研究成果: 雜誌貢獻文章同行評審

16 引文 斯高帕斯(Scopus)

摘要

Acoustic emission (AE) has been used to assess the integrity of ceramic coatings. The early studies enabled cracking mechanisms to be qualitatively assessed so that comparative studies of coating behavior could be formulated. The present work examines a quantitative assessment of crack populations and crack sizes so that more detailed analyses of "crack density functions" can evolve for mechanistic studies of thermal spray materials. Coatings and solid deposits of thermally sprayed ceramic have been tested with the stress oriented in directions perpendicular and parallel to the spray direction. It has been determined that macrocracking with catastrophic failure occurs in the perpendicular orientation; whereas several distinct crack populations, consisting of micro- and macrocracking events, are observed for the parallel orientation.
原文英語
頁(從 - 到)1-7
頁數7
期刊Surface and Coatings Technology
102
發行號1-2
DOIs
出版狀態已發佈 - 四月 1 1998
對外發佈

ASJC Scopus subject areas

  • 化學 (全部)
  • 凝聚態物理學
  • 表面和介面
  • 表面、塗料和薄膜
  • 材料化學

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