Detection of crack propagation in alumina using SrAl2O 4:(Eu,Dy) luminescent paint

J. S. Kim, K. S. Sohn, Y. N. Kwon, G. S. Ban, K. H. Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

Using a mechano-luminescent (ML) paint enabling the visualization of fast propagating crack as well as bridging stress distribution under a conventional loading condition, this paper presents a catastrophic fracture mechanism in association with the crack wake bridging in alumina ceramics. The bridging stress distribution evolves in its magnitude and shape as crack advances and keeps changing as load changes even for a stationary crack. An instantaneous stress intensity factor skyrocketed extraordinarily up to 120 MPa√m, which is due to the well-known effect of specimen dimension and the accurate location of real crack tip by the ML technique.

Original languageEnglish
Title of host publicationSupplement to THERMEC 2006, 5th International Conference on PROCESSING and MANUFACTURING OF ADVANCED MATERIALS, THERMEC 2006
PublisherTrans Tech Publications Ltd.
Pages2264-2268
Number of pages5
EditionPART 3
ISBN (Print)0878494286, 9780878494286
DOIs
StatePublished - 2007
Event5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006 - Vancouver, Canada
Duration: 4 Jul 20068 Jul 2006

Publication series

NameMaterials Science Forum
NumberPART 3
Volume539-543
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006
Country/TerritoryCanada
CityVancouver
Period4/07/068/07/06

Keywords

  • Alumina
  • Crack propagation
  • Mechano-luminescent paint
  • SrAlO(Eu,Dy)

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