Characterization of cracking within thermal spray deposits by an acoustic emission method - Extended abstract

被引：4

作者：

Berndt, CC ^{[1
]}

Lin, CK

Leigh, SH

机构：

[1] SUNY Stony Brook, Ctr Thermal Spray Res, Stony Brook, NY 11794 USA

[2] Natl Taiwan Ocean Univ, Inst Mat Engn, Taipei, Taiwan

[3] Res Inst Ind Sci & Technol, Pohang, South Korea

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 1998年 / 7卷 / 03期

基金：

美国国家科学基金会;

关键词：

acoustic emission; cracking of composites; cracking mechanisms; thermal spray;

D O I：

10.1361/105996398770350800

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Four-point bend tests with in situ acoustic emission (AE) were used to study the cracking behavior of alumina-3% titania materials prepared by gas- and mater-stabilized plasma technologies (GSP and WSP, respectively). Catastrophic failure was observed for GSP-sprayed samples while WSP-sprayed samples exhibited microcracking before failure. The amplitude and energy distributions were also investigated, and it was determined that the percentage of macrocracks for GSP-sprayed samples is much larger than for WSP-sprayed samples. The processing effects, which induced differences in microstructure, may account for the differences in AE responses.

引用

页码：334 / 336

页数：3

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