Stress–strain curves for steel, aluminium and concrete

Pull a bar of mild steel, reinforcing steel or aluminium, or crush concrete, and follow the stress–strain curve through elastic, plastic and necking stages.

Works in metric or imperial units.

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Questions students ask

How do you find Young's modulus?

It is the gradient of the straight elastic part of the stress–strain curve: stress / strain.

What is the yield strength?

The stress at which the material starts to deform permanently.

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