Recent content by DdotT
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What is the best 3d CAD software?
just started using solid edge in uni today, before this i used solidworks, solidworks is so much simplier to use though i haven't had much chance to try it. Only thing is once you make a mistake or trying to do something complicated and don't know why its not doing what u want in solidworks...- DdotT
- Post #9
- Forum: Mechanical Engineering
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How much maths is involved outside of university?
I am not great at maths, i usually take longer to see the link between two things as well as understanding it. I don't like it because of this reason, if i was ok at it then i would be fine and be happy about it all. When you say basic maths, does that mean, modelling a compression of a...- DdotT
- Post #4
- Forum: Mechanical Engineering
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How much maths is involved outside of university?
i've heard from people: the real world is nothing like university, engineers don't really use much except for formulas and computers do most of it anyway. How true is this? I personally hate maths but i like engineering, trying to just get through it. Also since i hate maths, is it even...- DdotT
- Thread
- Outside University
- Replies: 6
- Forum: Mechanical Engineering
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Creep Testing Help - Secondary creep rate
yes, it makes more sense know. thank you.- DdotT
- Post #11
- Forum: Engineering and Comp Sci Homework Help
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Creep Testing Help - Secondary creep rate
lnε = ln A + nlnσ - Qc / RT but we still need to know Qc and constant A? i just don't understand it x( sorry- DdotT
- Post #9
- Forum: Engineering and Comp Sci Homework Help
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Creep Testing Help - Secondary creep rate
yes, i just don't know what to subsitute for things like A and Qc- DdotT
- Post #7
- Forum: Engineering and Comp Sci Homework Help
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Creep Testing Help - Secondary creep rate
yh i understand this, and its relation to the exponent. its the equation of: ε = A σ^n e^ Qc / RT E is the secondary creep rate , stress is σ, n is the stress exponent of lead which is 10, Qc os the 'activation energy' for creep in the metal, R universal gas constant and T is temp. How do i...- DdotT
- Post #5
- Forum: Engineering and Comp Sci Homework Help
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Creep Testing Help - Secondary creep rate
No the 'thing' i need to do is draw up curves for the 3 specimens (extension against time), work out the stress , work out the secondary creep rate, then take natural logs of these, then plot a final graph with the natural logs, take the gradient of the line of best fit, that gives me the stress...- DdotT
- Post #3
- Forum: Engineering and Comp Sci Homework Help
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Creep Testing Help - Secondary creep rate
I tested creep in the labs at univeristy, one thing i am confused about is, we made a graph of the extension against time. Taking the gradient gives us E or secondary creep rate. Homework Statement The equation for this (without using gradient ) is, E= A stress^n e^-Qc/RT A and n are...- DdotT
- Thread
- Creep Rate Testing
- Replies: 11
- Forum: Engineering and Comp Sci Homework Help