(d) A support rod for the landing gear of a private airplane is subjected to a tensile loading landing. The loads are predicted to be as high as 40,000 pounds. Because the rod is crucial and failure could lead to a loss of life, and as a responsible engineer, the rod is to be designed with a factor safety of 4 (that is designed so that the rod is capable of supporting loads for times as great as expected). Operation of the system also produces loads that may induce cracks in the rod. Our non-destructive testing equipment can detect any crack greater than 0.02 in deed. Based on the materials given in Table Q2 (c), design the support Rod and the material, and justify your answer. Table Q2(c): The Plane Strain Fracture Toughness Kcof Selected Materials Yield Strength or Fracture Toughness Ku Ultimate Strength (for Brittle Solids) (psi vin.) Material (psi) 66,000 47,000 130,000 125,000 238,000 206,000 30,000 80,000 60,000 120,000 4,000 8,400 Al-Cu alloy 22,000 33,000 50,000 90,000 45,800 80,000 1,600 4,500 10,000 51,000 900 3,000 Ti-6% Al-4% V Ni-Cr steel SigNa Transformation toughened Zro Si,Na-SIC composite Polymethyl methacrylate polymer Polycarbonate polymer

(d) A support rod for the landing gear of a private airplane is subjected to a tensile loading landing. The loads are predicted to be as high as 40,000 pounds. Because the rod is crucial and failure could lead to a loss of life, and as a responsible engineer, the rod is to be designed with a factor safety of 4 (that is designed so that the rod is capable of supporting loads for times as great as expected). Operation of the system also produces loads that may induce cracks in the rod. Our non-destructive testing equipment can detect any crack greater than 0.02 in deed. Based on the materials given in Table Q2 (c), design the support Rod and the material, and justify your answer. Table Q2(c): The Plane Strain Fracture Toughness Kcof Selected Materials Yield Strength or Fracture Toughness Ku Ultimate Strength (for Brittle Solids) (psi vin.) Material (psi) 66,000 47,000 130,000 125,000 238,000 206,000 30,000 80,000 60,000 120,000 4,000 8,400 Al-Cu alloy 22,000 33,000 50,000 90,000 45,800 80,000 1,600 4,500 10,000 51,000 900 3,000 Ti-6% Al-4% V Ni-Cr steel SigNa Transformation toughened Zro Si,Na-SIC composite Polymethyl methacrylate polymer Polycarbonate polymer

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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