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7.2 In an engineering component made of zirconia (ZrO2), the most severely stressed point is subjected to the following state of stress: x 125,

7.2 In an engineering component made of zirconia (ZrO2), the most severely stressed point is subjected to the following state of stress: x 125, y = 80, Txy = 30 and z = Tyz = = Tzx = 0 MPa. Determine the safety factor against fracture. The material has a tensile strength of 147 MPa and a compressive strength of 2100 MPa.

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