19) Fatigue test results of a material are shown in the diagram. a) Estimate the ultimate static strength of this material b) Estimate the fatigue (endurance) limit. c) If this test specimen has a cross-sectional area of 14 cm² and subjected to a maximum repeated load of 2800 kg over it, after how many repetitions will it fail? d) Determine the fatigue strength at 1000 cycles o (kgf/cm³) 500 400 300 200 100 0 1 2 3 4 5 6 7 log10 N

19) Fatigue test results of a material are shown in the diagram. a) Estimate the ultimate static strength of this material b) Estimate the fatigue (endurance) limit. c) If this test specimen has a cross-sectional area of 14 cm² and subjected to a maximum repeated load of 2800 kg over it, after how many repetitions will it fail? d) Determine the fatigue strength at 1000 cycles o (kgf/cm³) 500 400 300 200 100 0 1 2 3 4 5 6 7 log10 N

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

See similar textbooks

Similar questions

Data: Tensile Strength b (mm) L (mm) d (mm) P (N) Tensile Strength (MPa) Average (MPa) 49.74 52.14 10.14 760 49.74 52.14 10.14 980 51.18 49 8.74 800 48.56 48.86 10.96 960 49 51.54 9.72 780
The following data are obtained from a tensile test of a copper specimen. - The load at the yield point is 159 kN. - Length of the specimen is 29 mm. - The yield strength is 82 kN/mm2. - The percentage of elongation is 47 %. Determine the following (i) Diameter of the specimen, ii) Final length of the specimen, iii) Stress under an elastic load of 19 kN, iv) Young's Modulus if the elongation is 2.8 mm at 19 kN and (v) Final diameter if the percentage of reduction in area is 21 %. Solution Initial Cross-sectional Area (in mm2) Answer for part 1 The Diameter of the Specimen (in mm) Answer for part 2 Final Length of the Specimen (in mm) Answer for part 3 Stress at the elastic load (in N/mm2) Answer for part 4 Young's Modulus of the Specimen (in N/mm2) Answer for part 5 Final Area of the Specimen at Fracture (in mm) Answer for part 6 Final Diameter of the Specimen after Fracture (in mm)
The following data are obtained from a tensile test of a copper specimen. - The load at the yield point is 152 kN. - Length of the specimen is 20 mm. - The yield strength is 86 kN/mm2. - The percentage of elongation is 48 %. Determine the following (i) Diameter of the specimen, ii) Final length of the specimen, iii) Stress under an elastic load of 10 kN, iv) Young's Modulus if the elongation is 2.2 mm at 10 kN and (v) Final diameter if the percentage of reduction in area is 28 %. Solution Initial Cross-sectional Area (in mm2) Answer for part 1 The Diameter of the Specimen (in mm) Answer for part 2 Final Length of the Specimen (in mm) Answer for part 3 Stress at the elastic load (in N/mm2) Answer for part 4 Young's Modulus of the Specimen (in N/mm2) Answer for part 5 Final Area of the Specimen at Fracture (in mm) Answer for part 6 Final Diameter of the Specimen after Fracture (in mm) Answer for part 7
Define the given terms related to mechanical properties of materials. 1. elastic material 2. Apparent Viscosity 3. Bend test 4. Bingham Plastic 5. Dilatant
25000 bolts are going to be used to fix a certain structure. The bolts have a mean fatigue life of 10000 days with a standard deviation of 2000 days under heavy dynamic loading conditions.What is the probability that a bolt will fail between 8250 and 12500 days of use?
The following data are obtained from a tensile test of a copper specimen. - The load at the yield point is 151 kN. - Length of the specimen is 23 mm. - The yield strength is 79 kN/mm2. - The percentage of elongation is 45 %. Determine the following (i) Diameter of the specimen, ii) Final length of the specimen, iii) Stress under an elastic load of 17 kN, iv) Young's Modulus if the elongation is 2.4 mm at 17 kN and (v) Final diameter if the percentage of reduction in area is 24 %. Find: 1)Stress at the elastic load (in N/mm2) 2)Young's Modulus of the Specimen (in N/mm2) 3)Final Area of the Specimen at Fracture (in mm) 4)Final Diameter of the Specimen after Fracture (in mm)
The following data are obtained from a tensile test of a copper specimen. - The load at the yield point is 151 kN. - Length of the specimen is 23 mm. - The yield strength is 79 kN/mm2. - The percentage of elongation is 45 %. Determine the following (i) Diameter of the specimen, ii) Final length of the specimen, iii) Stress under an elastic load of 17 kN, iv) Young's Modulus if the elongation is 2.4 mm at 17 kN and (v) Final diameter if the percentage of reduction in area is 24 %. THE QUESTION IS : FIND THE Final Diameter of the Specimen after Fracture (in mm)????
A kind of strain that measures the deformation of a material caused by temperature change a. Shear Strain b. Normal Strain c. Thermal Strain d. None of the above
*Only need Question 10.12 answered. Thank you! 10.11 The elasticity of a cylindrical sample of an unknown material is to be tested. The sample is 40 cm long and has a cross-sectional area of 2.5 cm2 . The sample is hung vertically and a 50 kg weight is attached to its free end. It is found that the sample stretches to a length of 40.1 cm. (a) What is the tensile stress on the sample? (b) What is the tensile strain? (c) What is Young’s modulus for this material? 10.12 (a) Bone has a tensile Young’s modulus of ?tensile = 16 × 109 N m−2 . If the sample of unknown material in Problem 10.11 was replaced with an identical sample of bone, what would the length increase of the bone be? (b) Bone has a compressive Young’s modulus of ?comp = 9 × 109 N m−2 . If the 50 kg weight was used to compress the sample rather than stretch it, how much would the length of the sample change?
The bulk modulus of a material, as a meaningful physical property, is applicable to which of the following? Choose A. Only liquid B. Only gas C. Solids, liquids and gases D. Only solid
The following data are obtained from a tensile test of a copper specimen. - The load at the yield point is 147 kN. - Length of the specimen is 28 mm. - The yield strength is 75 kN/mm2. - The percentage of elongation is 49 %. Determine the following (i) Diameter of the specimen, ii) Final length of the specimen, iii) Stress under an elastic load of 16 kN, iv) Young's Modulus if the elongation is 1 mm at 16 kN and (v) Final diameter if the percentage of reduction in area is 22 Final Area of the Specimen at Fracture (in mm) Final Diameter of the Specimen after Fracture (in mm) Initial Cross-sectional Area (in mm2)
What is hooke's law of elesticity introduction and conclusion in an experiment?