Vibration vibro test
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AndreyB
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Vibration vibro test
_Obviously_ it's time for a vibration test. What could be done on a $20 budget? $100 budget? $500 budget?
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AndreyB
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Re: Vibration test
reciprocating saw as a $20 test apparatus? would be expect any rusEFI board to survive any duration on the saw? is this a reasonable test?
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AndreyB
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Re: Vibration vibro test
Place your bets!
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AndreyB
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Re: Vibration vibro test
First edition has snapped that wire/cut through plastic case flanges.
Second edition bolts through a hole in the blade on one side and squeezes blade between two bolts on the other side.
Second edition bolts through a hole in the blade on one side and squeezes blade between two bolts on the other side.
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AndreyB
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Re: Vibration vibro test
After 3.5 minutes threaded inserts have separated from the plastic case. Ecu was OK, still idling my test mule vehicle.
After 7 minutes total flanges have fallen off. Ecu was OK, still idling my test mule vehicle.
That concludes the test for now, I am very happy with the results.
After 7 minutes total flanges have fallen off. Ecu was OK, still idling my test mule vehicle.
That concludes the test for now, I am very happy with the results.
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AndreyB
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Re: Vibration vibro test
Totally not rusEFI wonder if that hot glue (?) is about mechanical resiliency of SMD capacitors?
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mck1117
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Re: Vibration vibro test
Yes, that glue is for vibration resistance. The "vibration problem" of electronics is not something you're likely to be able to find with a sawzall because the frequency isn't high enough.
To try and get those caps to fail, you'd have to vibrate at a frequency that excites the mechanical resonance of the cap wiggling on the board. Might be a few khz. The point of the goo isn't to reinforce the cap necessarily, but to damp out that resonance so it can't break off in the first place.
Here's some good viewing:
To try and get those caps to fail, you'd have to vibrate at a frequency that excites the mechanical resonance of the cap wiggling on the board. Might be a few khz. The point of the goo isn't to reinforce the cap necessarily, but to damp out that resonance so it can't break off in the first place.
Here's some good viewing: