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Title: PVT Degradation Studies: Acoustic Diagnostics

Abstract

Under certain environmental conditions, polyvinyl toluene (PVT) plastic scintillator has been observed to undergo internal fogging. This document reports on a study of acoustic techniques to determine whether they can provide a diagnostic for the fogging of PVT. Different ultrasound techniques were employed for detecting the level of internal fogging in PVT, including wave velocity measurements, attenuation, nonlinear acoustics, and acoustic microscopy. The results indicate that there are linear relations between the wave velocity and wave attenuation with the level of internal fogging. The effects of fogging on ultrasound wave attenuation is further verified by acoustic microscopy imaging, where regions with fog in the specimen demonstration higher levels of attenuation compared to clear regions. Results from the nonlinear ultrasound measurements were inconclusive due to high sensitivities to transducer coupling and fixture variabilities.

Authors:
 [1];  [1];  [1];  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE; Dept. of Homeland Security (DHS) (United States)
OSTI Identifier:
1411935
Report Number(s):
PNNL-26366
830403000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 47 OTHER INSTRUMENTATION; PVT; degradation; acoustic sensors

Citation Formats

Dib, Gerges, Tucker, Brian J., Kouzes, Richard T., and Smith, Philip J.. PVT Degradation Studies: Acoustic Diagnostics. United States: N. p., 2017. Web. doi:10.2172/1411935.
Dib, Gerges, Tucker, Brian J., Kouzes, Richard T., & Smith, Philip J.. PVT Degradation Studies: Acoustic Diagnostics. United States. https://doi.org/10.2172/1411935
Dib, Gerges, Tucker, Brian J., Kouzes, Richard T., and Smith, Philip J.. Sat . "PVT Degradation Studies: Acoustic Diagnostics". United States. https://doi.org/10.2172/1411935. https://www.osti.gov/servlets/purl/1411935.
@article{osti_1411935,
title = {PVT Degradation Studies: Acoustic Diagnostics},
author = {Dib, Gerges and Tucker, Brian J. and Kouzes, Richard T. and Smith, Philip J.},
abstractNote = {Under certain environmental conditions, polyvinyl toluene (PVT) plastic scintillator has been observed to undergo internal fogging. This document reports on a study of acoustic techniques to determine whether they can provide a diagnostic for the fogging of PVT. Different ultrasound techniques were employed for detecting the level of internal fogging in PVT, including wave velocity measurements, attenuation, nonlinear acoustics, and acoustic microscopy. The results indicate that there are linear relations between the wave velocity and wave attenuation with the level of internal fogging. The effects of fogging on ultrasound wave attenuation is further verified by acoustic microscopy imaging, where regions with fog in the specimen demonstration higher levels of attenuation compared to clear regions. Results from the nonlinear ultrasound measurements were inconclusive due to high sensitivities to transducer coupling and fixture variabilities.},
doi = {10.2172/1411935},
url = {https://www.osti.gov/biblio/1411935}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {4}
}