The Nondestructive Testing Approach of Acoustic Emission for Environmentally Hazardous Objects

Author

Hongwu Qin ; Gang Zhao ; Qinyin Fan ; Tongli Jia ; Hao Du

Author_Institution

Coll. of Electron. & Inf. Eng., Changchun Univ., Changchun, China

fYear

2013

fDate

11-13 Dec. 2013

Firstpage

474

Lastpage

477

Abstract

Classical method of frequency distortion influence exclusion consists of FRF calculation with subsequent adjustment of received signals spectral characteristics. In the article, plane shape objects FRF can be calculated theoretically. Let us do FRF calculations for a long rod. The obtained results confirm high rate of AE signals emission irregularity and large fluctuations of spectrum components. This conclusion is valid for all ceramic materials under test. Acoustic emission method allows detecting and registering of only developing defects, prompting to classify them not by the size but by the danger level.

Keywords

acoustic emission; ceramics; hazardous materials; nondestructive testing; FRF calculation; acoustic emission; ceramic materials; environmentally hazardous objects; frequency distortion influence exclusion; nondestructive testing; received signals spectral characteristics; spectrum components; Acoustic distortion; Acoustic emission; Acoustic measurements; Materials; Shape; FRF; acoustic emission; control software; spectral analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Mobile Ad-hoc and Sensor Networks (MSN), 2013 IEEE Ninth International Conference on

Conference_Location

Dalian

Print_ISBN

978-0-7695-5159-3

Type

conf

DOI

10.1109/MSN.2013.87

Filename

6726378