Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
A nondestructive method to detect delaminations and defects in plates
1991 (English)In: NDT & E international, ISSN 0963-8695, E-ISSN 1879-1174, Vol. 24, no 2, p. 67-76Article in journal (Refereed) Published
Abstract [en]

Double exposure holographic interferometry, with a ruby laser as the light source, is used to study the influence of local changes in thickness, of delaminations and variations in damping upon propagating transient bending waves in plates and shells. The bending waves are created by the impact of a pendulum. Defects cause changes in the wave impedance of the plate, which will give rise to changes relative to the undisturbed fringe pattern, by reflected and transmitted waves. The size of a defect has to be of the same size or larger than the wavelength of the bending wave to be visible. Since bending waves are dispersive, high frequency components travelling faster than low frequency ones, a small defect is most likely to be observed shortly after impact. The influence of local changes in thickness and delaminations upon the fringe pattern is presented, together with a method to interpret the fringe pattern when several defects are present

Place, publisher, year, edition, pages
1991. Vol. 24, no 2, p. 67-76
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-7475Local ID: 5de432a0-7a20-11db-8824-000ea68e967bOAI: oai:DiVA.org:ltu-7475DiVA, id: diva2:980364
Note
Godkänd; 1991; 20061026 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

Open Access in DiVA

No full text in DiVA

Authority records BETA

Fällström, Karl-Evert

Search in DiVA

By author/editor
Fällström, Karl-Evert
In the same journal
NDT & E international
Applied Mechanics

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 6 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf