Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Patent
1995-10-06
1997-03-18
Williams, Hezron E.
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
73643, 73602, 73578, 73628, G01H 100
Patent
active
056124953
ABSTRACT:
A non-destructive examination device has an excitation current generation device for supplying an excitation current based on a control signal from a control device, a vibration excitor device for generating an elastic wave in accordance with athe excitation current and for vibrating an examination target to be examined by using the elastic wave; a response detection device (an acceleration sensor) for detecting a response of the vibration of the examination target caused by the elastic wave and for processing the response data in order to select desired examination information. The excitation current generation device generates the excitation current of an alternating pulse wave such as a pulse wave, or a rectangular wave, or a triangular wave, or a sine wave based on the control signal which is also a pulse signal. It can be acceptable to incorporate a plurality of the vibration excitor devices on the examination target in the non-destructive examination device.
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Egami Noritaka
Hattori Shinichi
Sakamoto Takahiro
Shimada Takashi
Taniguchi Ryosuke
Mitsubishi Denki & Kabushiki Kaisha
Moller Richard A.
Williams Hezron E.
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