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A hypothetical engineering stress-strain curve shown in the figure has three straight lines PQ, QR, RS with coordinates P(0,0), Q (0.2, 100), R (0.6, 140) and S (0.8, 130). Q is the yield point, R is the UTS point and S the fracture point.The toughness of the material (in MJ/ m3) is 0.85 |
Answer» A hypothetical engineering stress-strain curve shown in the figure has three straight lines PQ, QR, RS with coordinates P(0,0), Q (0.2, 100), R (0.6, 140) and S (0.8, 130). Q is the yield point, R is the UTS point and S the fracture point.![]() The toughness of the material (in MJ/ m3) is
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