Component SRS Testing

[tomirvine]

Certain electronic components must be subjected to shock response spectrum testing, particular if the component must survive a pyrotechnic shock event while in service. (Refer to MIL-STD-1540, 810, etc.)

I have an idea for a new type of shock test machine:

http://www.vibrationdata.com/iv_rod.pdf

One of the advantages of this method is that it lends itself to mathematical calculations (in contrast to most SRS test methods which are black-magic).

I currently do not have the resources to actually build this machine. But a simple, subscale prototype would be easy to build and test.

Anyway, I am available to collarborate with anyone who wants to develop this machine. This project could readily result in a conference paper, and hopefully a commercially practical test machine.

Tom Irvine
(P.S. Don't forget the analog anti-aliasing filter.)

 

[kchan711]

Hi Tom,

I gave a quick run-through of your paper. I'm assuming you want to build the machine off of the design concept presented in the paper, although more detailed of course. I can design the machine on Solidworks (even test it if necessary) and have a machine shop build the precision parts if needed. I have experience in acoustics and structural dynamics as well.

Go through my website below to get a hold of me if you would like to have further discussion.

Regards,

Kyle

Kyle Chandler

http://www.chiefengineering.net

 

[jimkinney]

Tom,

It looks simple, but other than orientation and energy source, how is this different from a Hopkinson bar test? Sandia has done a lot of work using them for pyroshock simulation.

Jim Kinney
Kennedy Space Center, FL

 

[floattuber]

Yes, that is my question also. It does seem similar.

 

[tomirvine]

Kyle,

This idea is not ready for SolidWorks. It first needs to be tried out using a subscale prototype made from hardware store parts. Thanks for your offer of help anyway.

Jim,

This idea is very similar to a Hopinkson's bar. The excitation source is different as you noted.

One of the ideas of this project is to compare the responses from force excitation versus initial velocity excitation of the bar/rod/pipe/beam.

My career opportunities have taken me away from hands-on testing to straight analysis (for better or worse), so I do not have ready access to data acquistion systems, accelerometers, etc.

But this would make a great science project for someone, as I mentioned previously.

Tom Irvine

 

[kchan711]

I know that, I just like putting things together on Solidworks before I go buy parts. Coming across the data acquisition system and components, well that's another problem. Knowing someone in a general lab will help.

Kyle Chandler

http://www.chiefengineering.net