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Title: Flaw detection in a multi-material multi-layered composite: using fem and air-coupled ut

Abstract

Ceramic tiles are the main ingredient of a multi-layer multi-material composite being considered for the modernization of tank armors. The high stiffness, low attenuation, and precise dimensions of these uniform tiles make them remarkable resonators when driven to vibrate. This study is aimed at modeling the vibration modes of the tiles and the composite lay-up with finite element analysis and comparing the results with the resonance modes observed in air-coupled ultrasonic excitation of the tiles and armor samples. Defects in the tile, during manufacturing and/or after usage, are expected to change the resonance modes. The comparison of a pristine tile/lay-up and a defective tile/lay-up will thus be a quantitative damage metric. The understanding of the vibration behavior of the tile, both by itself and in the composite lay-up, can provide useful guidance to the nondestructive evaluation of armor panels containing ceramic tiles.

Authors:
;  [1]; ;  [2]
  1. Department of Aerospace Engineering, Iowa State University, Ames, IA 50010 (United States)
  2. Center for Nondestructive Evaluation, Iowa State University, Ames, IA 50010 (United States)
Publication Date:
OSTI Identifier:
21511652
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1335; Journal Issue: 1; Conference: Review of progress in quantitative nondestructive evaluation, San Diego, CA (United States), 18-23 Jul 2010; Other Information: DOI: 10.1063/1.3592039; (c) 2011 American Institute of Physics; Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 36 MATERIALS SCIENCE; AIR; ARMOR; ATTENUATION; CERAMICS; COMPARATIVE EVALUATIONS; DAMAGE; DEFECTS; DETECTION; EXCITATION; FINITE ELEMENT METHOD; FLEXIBILITY; LAYERS; MANUFACTURING; NONDESTRUCTIVE ANALYSIS; OSCILLATION MODES; RESONANCE; RESONATORS; SIMULATION; TANKS; CALCULATION METHODS; CHEMICAL ANALYSIS; CONTAINERS; ELECTRONIC EQUIPMENT; ENERGY-LEVEL TRANSITIONS; EQUIPMENT; EVALUATION; FLUIDS; GASES; MATHEMATICAL SOLUTIONS; MECHANICAL PROPERTIES; NUMERICAL SOLUTION; TENSILE PROPERTIES

Citation Formats

Livings, R A, Dayal, V, Barnard, D J, and Hsu, D K. Flaw detection in a multi-material multi-layered composite: using fem and air-coupled ut. United States: N. p., 2011. Web. doi:10.1063/1.3592039.
Livings, R A, Dayal, V, Barnard, D J, & Hsu, D K. Flaw detection in a multi-material multi-layered composite: using fem and air-coupled ut. United States. https://doi.org/10.1063/1.3592039
Livings, R A, Dayal, V, Barnard, D J, and Hsu, D K. 2011. "Flaw detection in a multi-material multi-layered composite: using fem and air-coupled ut". United States. https://doi.org/10.1063/1.3592039.
@article{osti_21511652,
title = {Flaw detection in a multi-material multi-layered composite: using fem and air-coupled ut},
author = {Livings, R A and Dayal, V and Barnard, D J and Hsu, D K},
abstractNote = {Ceramic tiles are the main ingredient of a multi-layer multi-material composite being considered for the modernization of tank armors. The high stiffness, low attenuation, and precise dimensions of these uniform tiles make them remarkable resonators when driven to vibrate. This study is aimed at modeling the vibration modes of the tiles and the composite lay-up with finite element analysis and comparing the results with the resonance modes observed in air-coupled ultrasonic excitation of the tiles and armor samples. Defects in the tile, during manufacturing and/or after usage, are expected to change the resonance modes. The comparison of a pristine tile/lay-up and a defective tile/lay-up will thus be a quantitative damage metric. The understanding of the vibration behavior of the tile, both by itself and in the composite lay-up, can provide useful guidance to the nondestructive evaluation of armor panels containing ceramic tiles.},
doi = {10.1063/1.3592039},
url = {https://www.osti.gov/biblio/21511652}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1335,
place = {United States},
year = {Thu Jun 23 00:00:00 EDT 2011},
month = {Thu Jun 23 00:00:00 EDT 2011}
}