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Old 11-12-2006, 09:47 PM   #1
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0.1% Proof Stress

Collage Assignment.....
have to work out 0.1 % proof stress, anyone know how to doit?
tryed google but no luck
cheers
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Old 11-12-2006, 09:50 PM   #2
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Quote:
Originally Posted by PuppiesBalls View Post
Collage Assignment.....
have to work out 0.1 % proof stress, anyone know how to doit?
tryed google but no luck


cheers

Not quite sure where you're going with this, but you could start with A.S.M.E / A.S.T.M if that's the sort of test you are after and google that in...

..MMmmm.. after a bit of Googling ASME use .2%.
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Old 11-12-2006, 10:02 PM   #3
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cheers dude, will give it a go,
Its for a Tensile testing assignment for collage.
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Old 11-12-2006, 10:07 PM   #4
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question is:
for specimen c) Calculate 0.1% proof stress. Show all working.

Specimen c is A1 Alloy Sol trestment 5-5 C and aged at 185 C
Dia is 6.45 mm
length 25 mm

I have worked it UTS out to be 491.51N/mm
And strain 19.76%
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Old 12-12-2006, 04:44 AM   #5
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0.1% proof stress is where a line is drawn parallel to the elastic line on the stress strain graph. The line starts 0.1% or 0.2% along the x axis from the origin of the graph. The line runs parrallel to the elastic line until it intercepts the elastic line just after the point of yielding. Where the line intercepts is the proof stress value.

I haven't explained this very well so i will try and post a diagram.
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Old 12-12-2006, 09:44 AM   #6
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PM me yer E-mail addy and I'll send you a PDF of SA370 for you to read and then shred...
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Old 12-12-2006, 02:54 PM   #7
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If you PM me your email address i could email this information to you.
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Old 12-12-2006, 07:12 PM   #8
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Quote:
Originally Posted by PuppiesBalls View Post
Collage Assignment.....
have to work out 0.1 % proof stress, anyone know how to doit?
tryed google but no luck
cheers

What has this got to do with boats?
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Old 13-12-2006, 12:09 AM   #9
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Cheers for ya help guys, my email is ross_mac@hotmail.com
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