EXTREME shearography: Development of a high-speed shearography instrument for measurements of the surface strain components during an impact event

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

2 Citations (Scopus)
18 Downloads (Pure)

Abstract

This work presents the design and preliminary results of a high-speed shearography instrument in development for surface strain components measurements during an impact event. Composite materials are vulnerable to extreme dynamic loadings such as blade off events or foreign object damage as their mechanical properties are strain rate dependent. The development of new instruments to reconstruct extreme dynamic events will provide important insight into the understanding of the behaviour of composites. Shearography provides a quantitative measurement of the surface strain components with a high sensitivity as it is a non-contact interferometric technique. The current configuration of the shearography instrument realises measurements of the out-of-plane surface strain components during an impact using a double frame approach. The first experimental results reveal phase maps registered during an impact event with μs temporal resolution. Later the experimentally measured surface strain components will be used as input and validation data for new numerical and analytical models of the impact response of composites. The overall set of technical parameters of the developing shearography instrument makes it one of the most extreme applications of shearography for material characterisation.

Original languageEnglish
Title of host publicationSpeckle 2018
Subtitle of host publicationVII International Conference on Speckle Metrology
EditorsLeszek R. Jaroszewicz, Malgorzata Kujawinska
PublisherSPIE
Number of pages9
Volume10834
ISBN (Electronic)9781510622975
DOIs
Publication statusPublished - 1 Jan 2018
Event7th International Conference on Speckle Metrology, Speckle 2018 - Janow Podlaski, Poland
Duration: 10 Sep 201812 Sep 2018

Conference

Conference7th International Conference on Speckle Metrology, Speckle 2018
CountryPoland
CityJanow Podlaski
Period10/09/1812/09/18

Keywords

  • Composite materials
  • Double-pulse shearography
  • Flexural waves
  • High-speed shearography
  • Impact
  • Surface strain

Fingerprint

Dive into the research topics of 'EXTREME shearography: Development of a high-speed shearography instrument for measurements of the surface strain components during an impact event'. Together they form a unique fingerprint.

Cite this