Characterization of Cracking within Thermal Spray Deposits by an Acoustic Emission Method-Extended Abstract

C. C. Berndt, C. K. Lin, S. H. Leigh

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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 water-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.

Original languageEnglish
Pages (from-to)334-336
Number of pages3
JournalJournal of Thermal Spray Technology
Volume7
Issue number3
Publication statusPublished - Sep 1998
Externally publishedYes

Fingerprint

acoustic emission
Acoustic emissions
sprayers
Deposits
deposits
Microcracking
Aluminum Oxide
Alumina
Titanium
Gases
bend tests
Plasmas
Microstructure
Water
Processing
energy distribution
aluminum oxides
titanium
microstructure
Hot Temperature

Keywords

  • Acoustic emission
  • Cracking mechanisms
  • Cracking of composites
  • Thermal spray

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Characterization of Cracking within Thermal Spray Deposits by an Acoustic Emission Method-Extended Abstract. / Berndt, C. C.; Lin, C. K.; Leigh, S. H.

In: Journal of Thermal Spray Technology, Vol. 7, No. 3, 09.1998, p. 334-336.

Research output: Contribution to journalArticle

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