Question 4Figure 3 shows the impact of temperature and stress on mechanical properties ofmaterials(a) 1200High temperatureor high stress(b)900Medium temperatureor medium stressBrittleDuctileLow temperatureor low stress600300+Transitiontemperature-80-404080TimeTemperature (°C)Figure 3 (a) Izod impact test results for nylon thermoplastic polymer. (b) Creeptest resultsUsing Figure 3, explain:(a) The dependence of failure modes on temperature.(b) The effect of temperature changes and stress on the creep rate.Impact strength (J/m)Strain

From the given graph for Izod impact test and creep test results for nylon thermoplastic polymer, We…

Answered: (a) The dependence of failure modes on…

Engineering

Mechanical Engineering

(a) The dependence of failure modes on temperature. (b) The effect of temperature changes and stress on the creep rate.

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

5. How much more or less likely is it for a brittle material with volume V to fail compared to the same material with volume Vo/2 at the same applied stress? Why is this the case? Talk specifically in the context of flaw landscape.
Why does the tensile fracture occur suddenly?
Q1. (i) Initial strain Please enter your supplied question data Q1. (ii) Eo B (hr¹Pa-¹) n IVICUITO Fracture 0.003 Please enter your answers here Your Q1. (i) Answers: 4.60E-34 Q1. (ii) 3.2 Q2. o (Pa) σo (Pa) 780,000,000 Q3. t (hr) Q2. A component is made from a metal that is known to be viscoelastic and behaves according to a secondary creep rate equation with constants of B and n provided as your input values. If the component is subjected to a constant force that results in the initial strain of E provided to you, determine the design stress for a secondary creep life of 1,000 hrs before attaining a limiting strain, &, of 0.01. Q3. If the same component is subjected to a constant displacement that results in the value of initial stress, o, provided to you, calculate the time for the stress to reduce to 200MPa. Young's modulus of the bolt is E = 200GPa.
What causes materials to fail in fatigue at a stress less than the ultimate stress? How does this relate to the microstructure of the material?
1 Q 4 N Current Attempt in Progress 30¹ F1 A specimen of a 4340 steel alloy with a plane strain fracture toughness of 54.8 MPa m (50 ksi vin.) is exposed to a stress of 978.0 MPa (141800 psi). Assume that the parameter Y has a value of 1.18. - Your answer is partially correct. @ 2 (a) If the largest surface crack is 0.9 mm (0.03543 in.) long, determine the critical stress o. i 1608.13 (b) Will this specimen experience fracture? W S Yes v eTextbook and Media Hint Save for Later 38 command F2 # 3 E D 80 F3 X C $ 4 R MPa 000 000 F4 F % 5 V F5 T G 6 B MacBook Pro Y H & 44 N U 8 J Attempts: 1 of 5 used en l M 9 K DD F9 0 < H I -O L Submit Answer A F10 P V . t C F11 { command option [ + " = ? |