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random vibration |
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random vibration [′ran·dəm vī′brā·shən] (mechanics) A varying force acting on a mechanical system which may be considered to be the sum of a large number of irregularly timed small shocks; induced typically by aerodynamic turbulence, airborne noise from rocket jets, and transportation over road surfaces. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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A TV2, with various sizes of BGA daisy-chained packages with/without underfilled materials (including nonreworkable and reworkable), was designed, fabricated and subjected to random vibration tests with continuous monitoring of solder joint integrity. When the laser is tuned to zap the water within the nanostructures, a cascade of motions of water and surfactant molecules quickly incites random vibrations, or heating, of the solvent. nbsp;environmental qualification testing required to enter into the formal flight test process including: temperature, altitude and cooling air tests, mechanical shock test, random vibration and gunfire vibration tests, salt spray, explosion proofing, humidity storage, and fluids compatibility testing. |
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