1.9 (A). During a tensile test on a specimen the following results were obtained: Load (kN) 40 55 30 0.094 Extension (mm) 15 0.05 Load (kN) Extension (mm) Diameter of gauge length = 19 mm Diameter at fracture = 16.49 mm 70 5.08 75 7.62 0.127 80 12.7 50 0.157 82 16.0 1.778 80 19.05 60 2.79 Gauge length = 100 mm Gauge length at fracture = 121 mm 65 3.81 70 22.9 Plot the complete load extension graph and the straight line portion to an enlarged scale. Hence determine: (a) the modulus of elasticity; (d) the nominal stress at fracture; (b) the percentage elongation; (e) the actual stress at fracture; (c) the percentage reduction in area; (f) the tensile strength. [116 GN/m²; 21%; 24.7%; 247 MN/m²; 328 MN/m²; 289 MN/m²]

1.9 (A). During a tensile test on a specimen the following results were obtained: Load (kN) 40 55 30 0.094 Extension (mm) 15 0.05 Load (kN) Extension (mm) Diameter of gauge length = 19 mm Diameter at fracture = 16.49 mm 70 5.08 75 7.62 0.127 80 12.7 50 0.157 82 16.0 1.778 80 19.05 60 2.79 Gauge length = 100 mm Gauge length at fracture = 121 mm 65 3.81 70 22.9 Plot the complete load extension graph and the straight line portion to an enlarged scale. Hence determine: (a) the modulus of elasticity; (d) the nominal stress at fracture; (b) the percentage elongation; (e) the actual stress at fracture; (c) the percentage reduction in area; (f) the tensile strength. [116 GN/m²; 21%; 24.7%; 247 MN/m²; 328 MN/m²; 289 MN/m²]

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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