psd

[sonal01]

Hi

During random vibration testing PSD vs frequency graph is generated.

I know only PSD represent strenth of variation at that frequency. Can you tell me that graph what exactly define? 

Is it define only vibration occurs at that frequency or it representing any kind of damage or failure occur at that frequency?

And whats the meaning of 0.02 square of 'g' per HZ then rolling upto 0.01 square of 'g' per HZ?

sonal

[mikeporter]

First, math is just math. Like the mega-super-computer in the "Hitchhikers Guide" it can give you answers, but it doesn't necessarily know what the question is. Or to put it another way, it can tell you how much vibration there is at particular frequencies, but it can't tell you if that amount of vibration is a problem.

Mike...

[sonal01]

Then how we can justify what happened at that frequency.

Is it safe for product ?

[billko]

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@sonal01 wrote:

Then how we can justify what happened at that frequency.

Is it safe for product ?

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If you can't answer that question yourself, then perhaps you are the wrong person to be doing this job.