10-38. T he strain gauge is placed on the surface of a thin- walled steel boiler as shown. If it is 0.5 in. long, determine the pressure in the boiler when the gauge elongates 0.2(10 −3 ) in. The boiler has a thickness of 0.5 in. and inner diameter of 60 in. Also, determine the maximum x , y in-plane shear strain in the material. E st = 29(10 3 ) ksi, n st = 0.3 | |
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