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In situ calibration of acoustic emission transducers by time reversal method
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SYSNO ASEP 0456674 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název In situ calibration of acoustic emission transducers by time reversal method Tvůrce(i) Kober, Jan (UT-L) RID, ORCID
Převorovský, Zdeněk (UT-L) RID
Chlada, Milan (UT-L) RID, ORCIDCelkový počet autorů 3 Zdroj.dok. Sensors and Actuators A - Physical. - : Elsevier - ISSN 0924-4247
Roč. 240, April (2016), s. 50-56Poč.str. 7 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova time reversed acoustics ; calibration ; in situ ; acoustic emission Vědní obor RIV BI - Akustika a kmity Institucionální podpora UT-L - RVO:61388998 UT WOS 000372693600007 EID SCOPUS 84957585773 DOI 10.1016/j.sna.2016.01.033 Anotace Conventional methods of calibration of acoustic emission transducers require an already calibratedreference transducer and/or special test specimen. Moreover the calibration results are not directlytransferrable to practice, since they are dependent on bonding conditions and mechanical propertiesof the medium. In this paper a reference-free in situ calibration method is proposed. It is based on acombination of time reversed acoustics and reciprocal calibration and allows accurate determination oftransducers’ frequency responses. The method was developed and successfully experimentally verifiedassuming that frequency response of used transducers is the same for transmission and reception. Sub-sequently the analysis was extended considering irreversible transducers and applied to experimentaldata. Of five tested transducers, three were found reversible and two demonstrated resonance frequencyshift in lower frequency region between reception and transmission. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2017 Elektronická adresa http://ac.els-cdn.com/S0924424716300334/1-s2.0-S0924424716300334-main.pdf?_tid=0acf4736-ef6d-11e5-b826-00000aacb362&acdnat=1458568911_1c21eda9762b905a684ff939463ef3fe
Počet záznamů: 1