Determination of gas pressure in voids in epoxy casting using an ultrasonic measuring technique

Esben Larsen; C. Bak Petersen; Mogens Henriksen

doi:10.1109/ELINSL.1990.109785

Determination of gas pressure in voids in epoxy casting using an ultrasonic measuring technique

Esben Larsen, C. Bak Petersen, Mogens Henriksen

Technical University of Denmark

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Abstract

Results of measurements performed on a large open void, where pressure can be controlled from the outside, are compared to the theory of ultrasound transmission. The results verify the theory that the attenuation of transmitted ultrasonic signals through a void depends on the gas pressure inside the void. The results are based on the use of time delay spectrometry. This method gives a sufficiently high signal-to-noise ratio for detecting the transmitted part of the ultrasonic signal which has travelled through the void. Because of differences in the density and velocity of ultrasonic signals for the materials involved, that part of the signal is dependent on the pressure inside the void

Original language	English
Journal	I E E E International Symposium on Electrical Insulation. Conference Record
Pages (from-to)	410-413
ISSN	0164-2006
DOIs	https://doi.org/10.1109/ELINSL.1990.109785
Publication status	Published - 1990
Event	1990 IEEE International Symposium on Electrical Insulation - Toronto, Canada Duration: 3 Jun 1990 → 6 Jun 1990

Conference

Conference	1990 IEEE International Symposium on Electrical Insulation
Country/Territory	Canada
City	Toronto
Period	03/06/1990 → 06/06/1990

Bibliographical note

Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

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@inproceedings{757bde7f1e5342b98223c5e93a7b9775,

title = "Determination of gas pressure in voids in epoxy casting using an ultrasonic measuring technique",

abstract = "Results of measurements performed on a large open void, where pressure can be controlled from the outside, are compared to the theory of ultrasound transmission. The results verify the theory that the attenuation of transmitted ultrasonic signals through a void depends on the gas pressure inside the void. The results are based on the use of time delay spectrometry. This method gives a sufficiently high signal-to-noise ratio for detecting the transmitted part of the ultrasonic signal which has travelled through the void. Because of differences in the density and velocity of ultrasonic signals for the materials involved, that part of the signal is dependent on the pressure inside the void",

author = "Esben Larsen and Petersen, {C. Bak} and Mogens Henriksen",

note = "Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.; 1990 IEEE International Symposium on Electrical Insulation ; Conference date: 03-06-1990 Through 06-06-1990",

year = "1990",

doi = "10.1109/ELINSL.1990.109785",

language = "English",

pages = "410--413",

journal = "I E E E International Symposium on Electrical Insulation. Conference Record",

issn = "0164-2006",

publisher = "Institute of Electrical and Electronics Engineers",

}

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T1 - Determination of gas pressure in voids in epoxy casting using an ultrasonic measuring technique

AU - Larsen, Esben

AU - Petersen, C. Bak

AU - Henriksen, Mogens

N1 - Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

PY - 1990

Y1 - 1990

N2 - Results of measurements performed on a large open void, where pressure can be controlled from the outside, are compared to the theory of ultrasound transmission. The results verify the theory that the attenuation of transmitted ultrasonic signals through a void depends on the gas pressure inside the void. The results are based on the use of time delay spectrometry. This method gives a sufficiently high signal-to-noise ratio for detecting the transmitted part of the ultrasonic signal which has travelled through the void. Because of differences in the density and velocity of ultrasonic signals for the materials involved, that part of the signal is dependent on the pressure inside the void

AB - Results of measurements performed on a large open void, where pressure can be controlled from the outside, are compared to the theory of ultrasound transmission. The results verify the theory that the attenuation of transmitted ultrasonic signals through a void depends on the gas pressure inside the void. The results are based on the use of time delay spectrometry. This method gives a sufficiently high signal-to-noise ratio for detecting the transmitted part of the ultrasonic signal which has travelled through the void. Because of differences in the density and velocity of ultrasonic signals for the materials involved, that part of the signal is dependent on the pressure inside the void

U2 - 10.1109/ELINSL.1990.109785

DO - 10.1109/ELINSL.1990.109785

M3 - Conference article

SN - 0164-2006

SP - 410

EP - 413

JO - I E E E International Symposium on Electrical Insulation. Conference Record

JF - I E E E International Symposium on Electrical Insulation. Conference Record

T2 - 1990 IEEE International Symposium on Electrical Insulation

Y2 - 3 June 1990 through 6 June 1990

ER -

Determination of gas pressure in voids in epoxy casting using an ultrasonic measuring technique

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