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Title: Investigation of the nonlinearity of transducer acoustic couplants for nonlinear elastic measurements

Abstract

The study of nonlinear elasticity of materials often relies on attaching contact transducers to a sample to achieve the required strain amplitudes. When measuring and quantifying the degree of nonlinearity, it is assumed that the nonlinearity of the bond between the material and the transducer is negligible. We aim to characterize the nonlinearity of common acoustic couplants used in nonlinear measurements. Other factors are also reported since bond nonlinearity is not the only important property when choosing an acoustic couplant, i.e., amount of energy transfer, thermal properties, cure time, toxicity, and ease of application and/or removal. Various types of acoustic couplants including, epoxies, glues, thermal adhesives, and coupling agents were studied using Nonlinear Resonance Ultrasound Spectroscopy (NRUS), which is a measure of the hysteretic nonlinearity of a material. Measurements were made on cylindrical samples of acrylic, aluminum alloy 6061-T651, and Crab Orchard sandstone, chosen for their range of sound speeds, attenuation, and nonlinearity.

Authors:
 [1];  [2];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Cornell Univ., Ithaca, NY (United States). Sibley School of Mechanical and Aerospace Engineering
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Cornell Univ., Ithaca, NY (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1503190
Report Number(s):
LA-UR-18-29526
Journal ID: ISSN 0963-8695
Grant/Contract Number:  
89233218CNA000001; SC0012504
Resource Type:
Accepted Manuscript
Journal Name:
NDT and E International
Additional Journal Information:
Journal Volume: 104; Journal ID: ISSN 0963-8695
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; nonlinear acoustics; ultrasound spectroscopy; elastic nonlinearity

Citation Formats

Stuber Geesey, Marcie A., Aristorenas, Bettina, Ulrich, Timothy J., and Donahue, Carly M. Investigation of the nonlinearity of transducer acoustic couplants for nonlinear elastic measurements. United States: N. p., 2019. Web. doi:10.1016/j.ndteint.2019.03.004.
Stuber Geesey, Marcie A., Aristorenas, Bettina, Ulrich, Timothy J., & Donahue, Carly M. Investigation of the nonlinearity of transducer acoustic couplants for nonlinear elastic measurements. United States. doi:10.1016/j.ndteint.2019.03.004.
Stuber Geesey, Marcie A., Aristorenas, Bettina, Ulrich, Timothy J., and Donahue, Carly M. Fri . "Investigation of the nonlinearity of transducer acoustic couplants for nonlinear elastic measurements". United States. doi:10.1016/j.ndteint.2019.03.004.
@article{osti_1503190,
title = {Investigation of the nonlinearity of transducer acoustic couplants for nonlinear elastic measurements},
author = {Stuber Geesey, Marcie A. and Aristorenas, Bettina and Ulrich, Timothy J. and Donahue, Carly M.},
abstractNote = {The study of nonlinear elasticity of materials often relies on attaching contact transducers to a sample to achieve the required strain amplitudes. When measuring and quantifying the degree of nonlinearity, it is assumed that the nonlinearity of the bond between the material and the transducer is negligible. We aim to characterize the nonlinearity of common acoustic couplants used in nonlinear measurements. Other factors are also reported since bond nonlinearity is not the only important property when choosing an acoustic couplant, i.e., amount of energy transfer, thermal properties, cure time, toxicity, and ease of application and/or removal. Various types of acoustic couplants including, epoxies, glues, thermal adhesives, and coupling agents were studied using Nonlinear Resonance Ultrasound Spectroscopy (NRUS), which is a measure of the hysteretic nonlinearity of a material. Measurements were made on cylindrical samples of acrylic, aluminum alloy 6061-T651, and Crab Orchard sandstone, chosen for their range of sound speeds, attenuation, and nonlinearity.},
doi = {10.1016/j.ndteint.2019.03.004},
journal = {NDT and E International},
number = ,
volume = 104,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
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This content will become publicly available on March 15, 2020
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