Fatigue test results of a material are shown in the diagram.a) Estimate the ultimate static strength of this materialb) Estimate the fatigue (endurance) limit.c) If this test specimen has a cross-sectional area of 14 cm² and subjected to a maximumrepeated load of 2800 kg over it, after how many repetitions will it fail?d) Determine the fatigue strength at 1000 cyclesa (kgf/cm?)50040030020010023 45 6logio N

Answered: Image /qna-images/answer/98fd2c32-d3f4-468b-b495-79aaea933be5.jpg

Fatigue test results of a material are shownin 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 cm 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 a (kgf/cm?) 500 400 300 200 100 0 1 2 3 4 5 6 7 logio N

Fatigue test results of a material are shownin 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 cm 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 a (kgf/cm?) 500 400 300 200 100 0 1 2 3 4 5 6 7 logio N

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

The following data were collected from a 0.4-in.-diameter test specimen of polyvinyl chloride (l0 5 2.0 in.): Load (lb) 0 Δl (in.) 0.00000 300 600 900 1200 1500 1660 1600 0.00746 0.01496 0.02374 0.032 0.046 0.070 (maximum load) 0.094 1420 0.12 (fracture) After fracture, the total length was 2.09 in. and the diameter was 0.393 in. Plot the engineering stress strain curve and calculate (a) the 0.2% offset yield strength; (b) the tensile strength; (c) the modulus of elasticity; (d) the % elongation; (e) the % reduction in area; (f) the engineering stress at fracture; and (g) the modulus of resilience.
A plastic cube with a 100mm * 100mm * 100mm is placed in a pressure chamber and subjected to a pressure of 100MPa. If the modulus of elasticity is 7GPa and Poisson’s ratio is 0.39, what will be the decrease in each side of the block, assuming that the material remains within the linear elastic region? What will be the decrease in the volume of the cube?
Following experimental data are obtained from tensile test of a rectangular test specimen with original thickness of 2,5 mm, gauge width of 24 mm and gauge length of 101 mm: Load (N) Elongation (mm) 0 0 24372 0,183 23008 0,315 28357 5,777 35517 12,315 27555 17,978 23750 23,865 Based on the information above; draw stress-strain diagram of the material and answer the following questions. 1-)-Determine the modulus of resilience (in N.mm/mm3) of the material. (Use at least five decimal units) 2-)- Determine the elastic energy absorption capacity (in N.mm) of that specimen. 3-)Determine the plastic energy absorption capacity (in N.mm) of that specimen.
Consider a 1,000-mm long, 25-mm diameter sample subjected to a tension test. Automatic high-precision gages recorded that for an applied load of 150 kN, the sample experienced a longitudinal strain of 2×10−3mm/mm. Assuming that the material remained elastic while loaded, determine its modulus of elasticity. A. 175.0 GPa B. 63.7 GPa C. 152.8 GPa D. 72.9 GPa Which of the following occurs when the value of Poisson’s ratio is doubled and the modulus of elasticity is kept constant? a. The lateral deformations experienced by the material is halved b. The volume of the material will remain constant when subjected to external forces c. The elastic region of the shear stress-strain diagram would be less steep d. The material can withstand higher amounts of stress before permanent deformations occur
Following experimental data are obtained from tensile test of a rectangular test specimen with original thickness of 2,5 mm, gauge width of 24 mm and gauge length of 101 mm: Load (N) Elongation (mm) 0 0 24372 0,183 23008 0,315 28357 5,777 35517 12,315 27555 17,978 23750 23,865 Based on the information above; draw stress-strain diagram of the material and answer the following questions. - Calculate the fracture strength (in MPa) of the material. - Calculate the percent elongation of the specimen at fracture point. - Determine the modulus of resilience (in N.mm/mm3) of the material. (Use at least five decimal units) - Determine the toughness index number (in N.mm/mm3) of the material. - Determine the elastic energy absorption capacity (in N.mm) of that specimen. - Determine the plastic energy absorption capacity (in N.mm) of that specimen.
In a test to determine the crushing characteristics of a packing material, a steel cone of mass m = 2.6 kg is released, falls a distance h = 700 mm, and then penetrates the material. The radius of the cone is proportional to the square of the distance from its tip. The resistance R of the material to penetration depends on the cross-sectional area of the penetrating object and thus is proportional to the fourth power of the cone penetration distance x, or R = kx4. If the cone comes to rest at a distance x = 28 mm, determine the constant k in terms of the test conditions and results. Utilize a single application of the work-energy equation.
Calculate the ductility of a tested material in terms of percent elongation and percent reduction of area. The test result data is as follows:?? = 8 ???? = 9.67 ???? = 0.198 ???? = 0.0888 ??
Determine the pressure required to decrease the volume of the following fluids by 2%:a. waterb. glycerinc. SAE motor oil5. Calculate the shear modulus for a given cylindrical metal specimen and test results of T = 1700 N.m, L = 20 cm, D = 5 cm, ɸ = 0.02 rad. Can you tell what the material is?
what is the importance of the stress concentration test? I NEED IT RIGHT NOW, PLEASE HELP ME. I WILL RATE IT.
STRENGTH OF MATERIALS. Please show the complete solutions. Rate will be given. Answer in 3 decimal places! The compound shaft consists of solid steel and bronze shafts and hollow aluminum shaft (D= 2.25" and d=0.90''). It is subjected to two torques as shown in the figure. The moduli of rigidity for steel, aluminum, and bronze are 12x106 psi, 4x106 psi, and 6x106 psi, respectively. Determine the shearing stress developed in each material. Also, calculate the angle of twist incurred by the aluminum shaft.
A metal rod having a diameter of 10 mm is subjected to a repeated tensile load. The material of the rod has a tensile strength of 290 MPa and a fatigue failure behavior as shown in the figure. How many load repetitions can be applied to this rod before it fails if the magnitude of the load is a.) 5 kN, b.) 11 kN?
A rectangular block of aluminum 30 mm * 60 mm * 90 mm is placed in a pressure chamber and subjected to a pressure of 100 MPa. If the modulus of elasticity is 70 GPa and Poisson’s ratio is 0.333, what will be the decrease in the longest side of the block, assuming that the material remains within the linear elastic region? What will be the decrease in the volume of the block?