There's an old saying "If the only tool you have is a hammer, then all of your problems start to look like nails." In the old days of shock testing (writer spits into spittoon) all we had was drop table test machines. 1/2 sine shock pulses were easy to perform (just use rubber under the table), they looked good in the report (when you filtered the heck out of them), and they were absolutely repeatable. If there is anything an engineer likes better then accuracy in Half Sine Shock Pulse Testing, it's repeatability. But what is our excuse today? If we are really interested in finding out how our designs will stand up to real world shocks, why would we use a shock pulse for our testing which never appears in the real world? Passing a 1/2 sine shock test will NOT indicate that your product …
Difference Between G and Grms
Hi, I was referring to some of papers available on internet for HALT test guidelines. For Vibration tests, the paper says that chamber requirements should be -> Vibration output without load from 1 Grms to a minimum of 35 Grms. But for test equipment, accelerometer range is +/- 500g. I am confused what is the difference between g and Grms. How to select proper accelerometer? Please help. Thanks for your help in advance. Regards, Samir (see Vibration and Shock Blog post for response to this) …
Welcome to the Climatics Testing Blog
What kind of test is a climatics test? Well the most common would be temperature testing, but a more complete list would look like this: High Temperature Low Temperature Temperature Shock Humidity – Condensing and non-condensing Altitude Temperature/Altitude Rapid Decompression/Explosive Decomp Combined Environments Solar Radiation – actinic and thermal effects Salt Fog Sand & Dust Rain Immersion Explosive Atmosphere Icing Fungus Acceleration Space Simulation Exotics Wind blast Launch tube Bird strike Any questions about these tests? Our experts stand by to help out. Steve Brenner, Consultant and Climatics Testing Blogmeister …
Welcome to the Vibration & Shock Testing Blog
Hi - we look forward to questions about vibration and shock testing - everything is fair game: Test equipment Test specs Test parameters (selection OR measurement) Fixture design Data analysis Or just let us know that you have an interest. Steve Brenner, Consultant and V&S Blogmeister …
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