Method and apparatus for improving the transmitting and receiving directivity in long-range ultrasonic testing

Method and apparatus for improving the transmitting and receiving directivity in long-range ultrasonic testing

An apparatus for improving transmission directivity according to an embodiment of the present invention includes a phased array probe including a channel 1 transducer and a channel 2 transducer which are arranged at intervals corresponding to a quarter wavelength at a center frequency of a guided wa...

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1. Verfasser: Choi, Myoung-Seon
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Sprache:eng
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ELECTRICITY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator Choi, Myoung-Seon
description An apparatus for improving transmission directivity according to an embodiment of the present invention includes a phased array probe including a channel 1 transducer and a channel 2 transducer which are arranged at intervals corresponding to a quarter wavelength at a center frequency of a guided wave pulse for long-range ultrasonic testing, and a drive unit which supplies electric pulses with opposite phases to the channel 1 transducer and the channel 2 transducer of the channel 1 transducer and the channel 2 transducer, which is disposed on the front end on the basis of an intended transmission direction, is driven with delay by a time corresponding to a quarter frequency of the center frequency than the other transducer disposed on the rear end.
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subjects ELECTRICITY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title Method and apparatus for improving the transmitting and receiving directivity in long-range ultrasonic testing
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