An advanced acoustic emission sensor for transient elastic wave measurements

Yung-Chun Lee, Zi Bin Lin, Shi Hoa Kuo

研究成果: Conference article

摘要

This paper reports the development of an advanced acoustic emission system for transient elastic wave measurements. The goal is to develop an inexpensive but effective acoustic emission system which can simultaneously obtain high-frequency acoustic emission signals at multiple locations. The transient elastic signals can then be used for inversely deducing important characteristics of the acoustic emission event. To achieve this goal, a number of miniature PZT elements are first fabricated using an excimer laser micro-machining technique. The PZT element is in conical shape and with an aperture size around 200 μm. Very similar to the conventional NBS conical transducer but much smaller in size, the miniature PZT element is an excellent acoustic emission transducer with much high bandwidth. A new packaging method of the mini-conical element allows the transducer not only can measure conductive samples but also non-conductive ones. This improvement greatly enhances the applicability of the acoustic emission system. A number of PZT mini-conical transducers have been used to construct the acoustic emission measurement system. The transducer has been tested with standard glass capillary breaking methods. Finally, a mechanical fixture is designed to mount these acoustic emission transducers and to make the acoustic emission measurements much more convenient. To demonstrate the capability of this advanced acoustic emission system, a number of plate samples are used. Acoustic emission signal at multiple locations are obtained and compared with their theoretical counterparts. Good results are obtained. Further improvement and application of this system will be addressed.

原文English
頁(從 - 到)471-478
頁數8
期刊Key Engineering Materials
270-273
發行號I
出版狀態Published - 2004 十一月 25
事件Proceedings of the 11th Asian Pacific Conference on Nondestructive Testing - Jeju Island, Korea, Republic of
持續時間: 2003 十一月 32003 十一月 7

指紋

Elastic waves
Acoustic emissions
Sensors
Transducers
Excimer lasers
Packaging
Machining
Bandwidth
Glass

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

引用此文

Lee, Yung-Chun ; Lin, Zi Bin ; Kuo, Shi Hoa. / An advanced acoustic emission sensor for transient elastic wave measurements. 於: Key Engineering Materials. 2004 ; 卷 270-273, 編號 I. 頁 471-478.
@article{e054b4aaa4ed4f049495bb2b2e100ad7,
title = "An advanced acoustic emission sensor for transient elastic wave measurements",
abstract = "This paper reports the development of an advanced acoustic emission system for transient elastic wave measurements. The goal is to develop an inexpensive but effective acoustic emission system which can simultaneously obtain high-frequency acoustic emission signals at multiple locations. The transient elastic signals can then be used for inversely deducing important characteristics of the acoustic emission event. To achieve this goal, a number of miniature PZT elements are first fabricated using an excimer laser micro-machining technique. The PZT element is in conical shape and with an aperture size around 200 μm. Very similar to the conventional NBS conical transducer but much smaller in size, the miniature PZT element is an excellent acoustic emission transducer with much high bandwidth. A new packaging method of the mini-conical element allows the transducer not only can measure conductive samples but also non-conductive ones. This improvement greatly enhances the applicability of the acoustic emission system. A number of PZT mini-conical transducers have been used to construct the acoustic emission measurement system. The transducer has been tested with standard glass capillary breaking methods. Finally, a mechanical fixture is designed to mount these acoustic emission transducers and to make the acoustic emission measurements much more convenient. To demonstrate the capability of this advanced acoustic emission system, a number of plate samples are used. Acoustic emission signal at multiple locations are obtained and compared with their theoretical counterparts. Good results are obtained. Further improvement and application of this system will be addressed.",
author = "Yung-Chun Lee and Lin, {Zi Bin} and Kuo, {Shi Hoa}",
year = "2004",
month = "11",
day = "25",
language = "English",
volume = "270-273",
pages = "471--478",
journal = "Key Engineering Materials",
issn = "1013-9826",
publisher = "Trans Tech Publications",
number = "I",

}

An advanced acoustic emission sensor for transient elastic wave measurements. / Lee, Yung-Chun; Lin, Zi Bin; Kuo, Shi Hoa.

於: Key Engineering Materials, 卷 270-273, 編號 I, 25.11.2004, p. 471-478.

研究成果: Conference article

TY - JOUR

T1 - An advanced acoustic emission sensor for transient elastic wave measurements

AU - Lee, Yung-Chun

AU - Lin, Zi Bin

AU - Kuo, Shi Hoa

PY - 2004/11/25

Y1 - 2004/11/25

N2 - This paper reports the development of an advanced acoustic emission system for transient elastic wave measurements. The goal is to develop an inexpensive but effective acoustic emission system which can simultaneously obtain high-frequency acoustic emission signals at multiple locations. The transient elastic signals can then be used for inversely deducing important characteristics of the acoustic emission event. To achieve this goal, a number of miniature PZT elements are first fabricated using an excimer laser micro-machining technique. The PZT element is in conical shape and with an aperture size around 200 μm. Very similar to the conventional NBS conical transducer but much smaller in size, the miniature PZT element is an excellent acoustic emission transducer with much high bandwidth. A new packaging method of the mini-conical element allows the transducer not only can measure conductive samples but also non-conductive ones. This improvement greatly enhances the applicability of the acoustic emission system. A number of PZT mini-conical transducers have been used to construct the acoustic emission measurement system. The transducer has been tested with standard glass capillary breaking methods. Finally, a mechanical fixture is designed to mount these acoustic emission transducers and to make the acoustic emission measurements much more convenient. To demonstrate the capability of this advanced acoustic emission system, a number of plate samples are used. Acoustic emission signal at multiple locations are obtained and compared with their theoretical counterparts. Good results are obtained. Further improvement and application of this system will be addressed.

AB - This paper reports the development of an advanced acoustic emission system for transient elastic wave measurements. The goal is to develop an inexpensive but effective acoustic emission system which can simultaneously obtain high-frequency acoustic emission signals at multiple locations. The transient elastic signals can then be used for inversely deducing important characteristics of the acoustic emission event. To achieve this goal, a number of miniature PZT elements are first fabricated using an excimer laser micro-machining technique. The PZT element is in conical shape and with an aperture size around 200 μm. Very similar to the conventional NBS conical transducer but much smaller in size, the miniature PZT element is an excellent acoustic emission transducer with much high bandwidth. A new packaging method of the mini-conical element allows the transducer not only can measure conductive samples but also non-conductive ones. This improvement greatly enhances the applicability of the acoustic emission system. A number of PZT mini-conical transducers have been used to construct the acoustic emission measurement system. The transducer has been tested with standard glass capillary breaking methods. Finally, a mechanical fixture is designed to mount these acoustic emission transducers and to make the acoustic emission measurements much more convenient. To demonstrate the capability of this advanced acoustic emission system, a number of plate samples are used. Acoustic emission signal at multiple locations are obtained and compared with their theoretical counterparts. Good results are obtained. Further improvement and application of this system will be addressed.

UR - http://www.scopus.com/inward/record.url?scp=8644222069&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=8644222069&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:8644222069

VL - 270-273

SP - 471

EP - 478

JO - Key Engineering Materials

JF - Key Engineering Materials

SN - 1013-9826

IS - I

ER -