3. The tensile strength of polymethyl methacrylate (PMMA) is about 65 MPa. This assumes the sample has perfect quality (

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3 The Tensile Strength Of Polymethyl Methacrylate Pmma Is About 65 Mpa This Assumes The Sample Has Perfect Quality 1 (32.08 KiB) Viewed 43 times

3. The tensile strength of polymethyl methacrylate (PMMA) is about 65 MPa. This assumes the sample has perfect quality (no flaws). Calculate the tensile stress required to fail a tensile coupon that has a 0.5 mm crack on one side (see illustration below). Use the single edge notch plate model to calculate the geometric factor (Y). Assume the fracture toughness of PMMA is 1 MPa m¹/2 O 12.5 mm b 0.5 mm crack