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Title: Focused Acoustic Beam Evaluation of Aluminum - Lithium Friction Stir Weld

Abstract

Local elastic variations were measured across a friction stir welded zone in Al-Li alloy with the use of a focused acoustic beam. The near surface microstructure was investigated by measuring both the amplitude and the local velocity of the Rayleigh Surface Waves (RSW). Both the amplitude and velocity of the focused longitudinal acoustic waves propagating through the thickness of the sample has been used for examination of the variations in the localized bulk elastic properties. The variations observed across the weld zone are explained based on microstructure and residual stress variations.

Authors:
; ;  [1];  [2]
  1. University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0127 (United States)
  2. Air Force Research Laboratory, Metals, Ceramics and NDE Division, 2230 Tenth St., Wright Patterson AFB, Dayton, OH 45433-7817 (United States)
Publication Date:
OSTI Identifier:
21054928
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 894; Journal Issue: 1; Conference: Conference on review of progress in quantitative nondestructive evaluation, Portland, OR (United States), 30 Jul - 4 Aug 2006; Other Information: DOI: 10.1063/1.2718089; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM; AMPLITUDES; ELASTICITY; EVALUATION; FRICTION; INTERMETALLIC COMPOUNDS; LITHIUM; MICROSTRUCTURE; RAYLEIGH WAVES; RESIDUAL STRESSES; SOUND WAVES; SURFACES; THICKNESS; VARIATIONS; WAVE PROPAGATION; WELDED JOINTS

Citation Formats

Sathish, Shamachary, Martin, Richard W., Reibel, Richard, and Jata, Kumar V.. Focused Acoustic Beam Evaluation of Aluminum - Lithium Friction Stir Weld. United States: N. p., 2007. Web. doi:10.1063/1.2718089.
Sathish, Shamachary, Martin, Richard W., Reibel, Richard, & Jata, Kumar V.. Focused Acoustic Beam Evaluation of Aluminum - Lithium Friction Stir Weld. United States. doi:10.1063/1.2718089.
Sathish, Shamachary, Martin, Richard W., Reibel, Richard, and Jata, Kumar V.. Wed . "Focused Acoustic Beam Evaluation of Aluminum - Lithium Friction Stir Weld". United States. doi:10.1063/1.2718089.
@article{osti_21054928,
title = {Focused Acoustic Beam Evaluation of Aluminum - Lithium Friction Stir Weld},
author = {Sathish, Shamachary and Martin, Richard W. and Reibel, Richard and Jata, Kumar V.},
abstractNote = {Local elastic variations were measured across a friction stir welded zone in Al-Li alloy with the use of a focused acoustic beam. The near surface microstructure was investigated by measuring both the amplitude and the local velocity of the Rayleigh Surface Waves (RSW). Both the amplitude and velocity of the focused longitudinal acoustic waves propagating through the thickness of the sample has been used for examination of the variations in the localized bulk elastic properties. The variations observed across the weld zone are explained based on microstructure and residual stress variations.},
doi = {10.1063/1.2718089},
journal = {AIP Conference Proceedings},
number = 1,
volume = 894,
place = {United States},
year = {Wed Mar 21 00:00:00 EDT 2007},
month = {Wed Mar 21 00:00:00 EDT 2007}
}