Vibration testing apparatus and method using acoustical waves
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United States of America Patent
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Dec 30, 2003
Grant Date -
N/A
app pub date -
Dec 19, 2001
filing date -
Jun 28, 1999
priority date (Note) -
Expired
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Abstract
A vibration testing system using acoustical waves having a testing unit including a main enclosure defining a main acoustical cavity and having a baffle provided with a main opening which is aligned with a set of acoustical insulation bands receiving an article to be tested that are clamped on a fixture secured to the baffle, so that the main opening is substantially closed by the article and the acoustical insulation bands. The apparatus includes a main acoustical source comprising a main acoustical transducer such as a loudspeaker which is acoustically coupled to the main acoustical cavity, and a subsystem for driving the loudspeaker which generates acoustical waves imparting vibration to the article accordingly. The apparatus preferably also includes a further acoustical source in the form of one or more further loudspeakers facing the main loudspeaker with the baffle extending therebetween, the further loudspeakers showing complementary frequency operating ranges.
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