Full-field 3D deformation measurement of thin metal plates subjected to underwater shock loading

Peng Wan Chen*, Han Liu, Shaolong Zhang, Ang Chen, Baoqiao Guo

*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

In this paper, the dynamic deformation of thin metal plates subject to underwater shock wave loading are studied by using high-speed 3D digital image correlation (3D-DIC). An equivalent device consist of a gas gun and a water anvil tube was used to supplying an exponentially decaying pressure in lieu of explosive detonation which acted on the panel specimen. The thin circular specimen panels with different support boundary conditions ware fixed on the end of the anvil tube by the flange ring cover. The thin circular plates with different thickness were made of pure copper. The intensity of impulsive loading is controlled by changing the impact velocity of the flyer. The pressure history of the underwater impulsive wave was measured by a pair of dynamic pressure transducers. The transient responses of the panels were measured by a High-speed three-dimensional Digital Image Correlation (3D DIC) photography system. The 3D DIC system records full field shape, displacement profiles velocity profiles and strain profiles of the specimen surface in real time. The influences of intensity of loading and support condition on the deformation of specimen panels are discussed based on the DIC results. The strain gauges also were used to monitor the structural response on the selected position for comparison. The DIC data and the strain gauges results show a high level of correlation, and 3D-DIC is proven to be an effective method to measure 3D full-field dynamic response of structures under underwater impact loading.

Original languageEnglish
Title of host publicationAdvancement of Optical Methods in Experimental Mechanics - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics
EditorsLuciano Lamberti, Ming-Tzer Lin, Helena Jin, Sanichiro Yoshida
PublisherSpringer New York LLC
Pages217-223
Number of pages7
ISBN (Print)9783319224459
DOIs
Publication statusPublished - 2016
EventAnnual Conference on Experimental and Applied Mechanics, 2015 - Costa Mesa, United States
Duration: 8 Jun 201511 Jun 2015

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume3
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

ConferenceAnnual Conference on Experimental and Applied Mechanics, 2015
Country/TerritoryUnited States
CityCosta Mesa
Period8/06/1511/06/15

Keywords

  • 3D-DIC
  • Circular plate
  • Clamped condition
  • Full field measurement
  • Underwater shock loading

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