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kupik [55]
3 years ago
15

A strain gauge with a 5 mm gauge length gives a displacement reading of 1.25 um. Calculate the stress value given by this displa

cement if the material is structural steel.
Engineering
1 answer:
KengaRu [80]3 years ago
7 0

Answer:

stress  = 50MPa

Explanation:

given data:

Length of strain guage is 5mm

displacement\delta = 1.25 \mu m =\frac{1.25}{1000} =  0.00125 mm

stress due to displacement in structural steel can be determined by using following relation

E =\frac{stress}{strain}

stress = E \times strain

where E is young's modulus of elasticity

E for steel is 200 GPa

stress = 200\times 10^3 *\frac{1.25*10^{-3}}{5}

stress  = 50MPa

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