Calibration of AE sensors using time reversal method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F14%3A00438791" target="_blank" >RIV/61388998:_____/14:00438791 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Calibration of AE sensors using time reversal method

Popis výsledku v původním jazyce

So far, a calibration of acoustic emission sensors (and ultrasonic sensors in general) was possible either by a reciprocal calibration proposed by Hatano or by using an already calibrated reference sensor or vibrometer. These methods are however applicable only in laboratory conditions and require a special test specimen. Their results are only approximately transferable to practice, since the frequency response of sensors will change with bonding conditions and type of medium they are attached to. Thepaper shows a method of on-site calibration based on reciprocal calibration and using the time reversal method. The method was tested on a airplane wing flange specimen with six sensors attached to it. Initial experiments show promising results with lowvariability. Free boundary response of used sensors was measured by vibrometer and comparison of results shows some common features as expected.

Název v anglickém jazyce

Calibration of AE sensors using time reversal method

Popis výsledku anglicky

So far, a calibration of acoustic emission sensors (and ultrasonic sensors in general) was possible either by a reciprocal calibration proposed by Hatano or by using an already calibrated reference sensor or vibrometer. These methods are however applicable only in laboratory conditions and require a special test specimen. Their results are only approximately transferable to practice, since the frequency response of sensors will change with bonding conditions and type of medium they are attached to. Thepaper shows a method of on-site calibration based on reciprocal calibration and using the time reversal method. The method was tested on a airplane wing flange specimen with six sensors attached to it. Initial experiments show promising results with lowvariability. Free boundary response of used sensors was measured by vibrometer and comparison of results shows some common features as expected.

Druh

O - Ostatní výsledky

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů