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Vibration Standard Required

Vibration Standard Required

Vibration Standard Required

(OP)
I need a vibration standard to test component/solder failure on a circuit board that is used in a controller for commercial/industrial applications. Currently, the test that is being advised is a sine test, 10-57Hz, .35mm amplitude and 57-150Hz at 5G (no standard given). I think that this is probably too extreme and I also think that the test should probably be a random test instead of sine since we are trying to simulate standard transportation and vibration levels encountered during field service.
Thanks.

RE: Vibration Standard Required

A good reference for electrical component testing is:

NAVMAT P-9492, Navy Manufacturing Screening Program, Department of Navy, May 1979.

This reference specifies a random vibration test.  The purpose of the test is to screen for latent defects such as bad solder joints, intermittent shorts, bad parts, etc.

You can download a copy of this reference from:

http://www.vibrationdata.com/tutorials.htm

As disclosure, a very small fee is required to download materials from this web page.  

Sincerely, Tom Irvine
Email:  tomirvine@aol.com

RE: Vibration Standard Required

A word of caution - This is a good STARTING point, but screens are developmental.  That is - if you get too many failures, or not enough, you need to lower, raise, or notch the spectrum.  A bit of folklore - when this spec first came out in the 80's the profile was called "the Willoughby spec".

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