Vibration courses 3

[Russell9990]

Hi All

I work for an aerospace company in the south of England and we are due to enter qualification testing for an aircraft structural component at the end of the year. I was wondering if anybody could recommend a good vibration course I could attend, preferably this year. I have attended the Cranfield Shock course earlier this year and while it was good found it a bit too academic. Is there a more hands on course someone could recomend?

 

[Tobalcane]

Do you have a Bruel & Kjaer office in your country? If so, they have good industry focused wide verity of classes. If not, go to their web site and check out their free seminars on line. At least get your self Steve Goldman VIBRATION SPECTRUM ANALYSIS printed by Industrial Press to under how the equipment in the vib and shock industry works.

Good luck


Go Mechanical Engineering
Tobalcane

 

[Russell9990]

Hi Tobalcane

Thanks for that. I have been in contact with B and K and have been to some of their talks. However they mainly covered accelerometer selection and design. I was actually hoping that someone who had been on some of the vibration courses around could recommend one. E.g LDS course vs Cranfield. Does the VIBRATION SPECTRUM ANALYSIS book cover general shaker vibration? I thought it was mainly rotating machinery.

Russell

 

[TPL]

Somehow you are going to have to excite this component as part of the testing - have you talked to the suppliers of the test equipment to see if they can recommend anyone or get references from other users of their equipment

 

[Tobalcane]

Russell9990
It does cover mostly rotational scenarios, but you can transfer the ideas and techniques of the equipment used to the shaker table. Mostly of what I learned about vibration and mostly random vib was from college and another book by Dave S. Stenberg VIBRATION ANALYSIS FOR ELECTRONIC EQUIPMENT printed by Wiley Inter-Science. I do a lot of electronic equipment vib analysis in flying vehicles, but not the vehicle it self, but I’m sure I can transfer the same vibration and shock theory to a structure such as a plane to get natural frequencies, modal shapes, and “G” loads.

What are you looking for, vibration due to wind loads or vib induced by the turbine engines? Are you looking at how vibration affects the structure or electronic equipment? Just curious…




Go Mechanical Engineering
Tobalcane

 

[CESSNA1]

RUSSEL9990:
The web site below is the best kept secret in engineering. They offer terrific programs taught by outstanding instructors.

http://www.tti4edu.com

Regard
Dave Hall

 

[DaveBidner]

Hi russell9990,
HP Instruments had a series of application notes I found very useful to get started, but it was 13 years ago (paper) if you can find them. They are very hands on.
Dave B

 

[ebarba]

Hello russell9990,

You can find some good information on modal testing in the books:

* "Advanced Modal Analysis"
by Giuseppe Conciauro, Marco Guglielmi, Roberto Sorrentino.
* "Modal Analysis" by Zhi-Fang Fu, Jimin He

Testing can be as complicated as one desires, with test rigs built specifically for the case and expensive lab equipment, or can be simple and more practical. It all depends on the required accuracy degree, so the first thing to do when preparing this kind of tests is to set the goals of the experiment. What are your accuracy/precision constraints?

Regards.

P.S. I work for a vibration and acoustics services company that dictates custom courses for industry. I know eng-tips members are not supposed to advertise, so i will only paste the web site address:

http://www.pulsedynamics.com

 

[electricpete]

The HP notes mentioned by Dave are at Agilent:

Here is a search of their library for stuff on vibration

http://www.home.agilent.com/cgi-bin...e=ED30&searchString=vibration&COUNTRY_CODE=US

They also have some good dsp stuff not shown in this search.

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[izax1]

Russel9990

Take a look at

http://www.devotek.com

and look at the courses they offer. Both dynamics stuff and a lot of other interesting things

 

[GregLocock]

Try ISVR at Southhampton Uni. They have a slight automotive bias, but offer the best technical training in vibration I've ever had.

Cheers

Greg Locock

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