Fall 2012 ME 395 - GSI Josh Lacey

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 Dimensions for other section's samples

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sjnitz



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Join date : 2012-09-12

PostSubject: Dimensions for other section's samples   Sun Sep 30, 2012 2:01 pm

The stress data has been posted from each lab, but I ca't find the measurement data. Should we just use our section's data for area/length values for all the calculations or do we need an average value?
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sjnitz



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Join date : 2012-09-12

PostSubject: Re: Dimensions for other section's samples   Sun Sep 30, 2012 3:25 pm

Also, what were the strain rates at different points at the test? I believe it was the following, but would like to double check

For loading/unloading
- 0.1mm/s for 0.3% strain
- 0.4mm/s for 5 and 15% strain
- 0.8mm/s for 30%

For failure loading
- not sure, 0.8mm/s through all?
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GSI Overlord
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Join date : 2012-08-30

PostSubject: Re: Dimensions for other section's samples   Sun Sep 30, 2012 4:03 pm

Yes, just use the dimension data that you took in your section (we had measurements from every group, so that will allow for precision error).

We actually ran at 0.04mm/s for the 30% strain test. What I did on the second cylinder was that we ran 0.01mm/sec until we hit the yield point, and then we ran 0.08mm/s all the way out to failure.
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