Which of the following startements is incomeef?AUnderand fatigne 1oa0ding materials may fail atcreepStress well below the Yourg's modulus of the matenal.B -During Stead4-State creep gthere is a balance between wmpetingprocesses of Strain-hardening and recovery.C- To reduce dislocation creep second phase preipitates can beintroduced to the material.D- Choosing a material with a high melting temperature Canoffset creep.A visco elastic matenial Shows a ombinafion of elasticresponse and a viscous flow

The incorrect statement out of the above given statements is option (D) (D) Choosing the material…

Answered: Which of the following startements is…

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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5. Derive expressions for a simple Voigt element in the following experiments: (a) Creep experiment: time-dependent compliance, J(t) (b) Stress-relaxation experiment: time-dependent modulus, E(t) (c) Constant extension rate experiment: change in stress, o(t)
d) Based on fatigue diagram below, find all value intersection at X and Y axis and give the name of all the line. (Fill all related calculation below) --- [2 marks] Fatigue diagram H B D Value for 'A' in fatigue diagram above? (MPa) - (1DP} Your answer Value for 'B' in fatigue diagram above? (MPa) - (1DP} Your answer Value for 'C' in fatigue diagram above? (MPa) - (1DP} Your answer
Consider two cylindrical rods of metal are reduced by a drawing operation: one from Do= 45mm to 15mm and the other from Do=80mm to 30mm. a) what is the longitudinal true strian assuming volume constancy b) which strip will recrystallize at a lower temperature and why
A bolt is used to fasten together two copper plates for a cryogenic application. Which material would be the optimal choice for the bolt to prevent the loosening of the parts when introduced to the cold? brass, copper, or mild steel.Justify with quantitative analysis.Provide Solution and short reflection of 1-2 sentences.
4) In the temperature range from 600°C to 750°C, a steel wire with 100 mm length shows the steady state creep behavior. The wire was exposed to 600°C under 300 MPa for ten years, how long the specimen would be? ( TH Trung Trong Stress (MPa) 1000 FTTinh Tru Trung Trung Trong th 800 600 400 200 100 80 60 40 815 C 20 d 10-6 104 10-5 650 C 730 C 925°C d d d d d 10-3 10-2 10-1 1 10 10² Steady-state creep rate (h-¹) 10³
State at what homologous temperature creep may start to become an issue for metals and for ceramics. Then estimate the actual temperature for Al, Ti, ZrO2, and SiC. Is the onset of creep behavior with respect to temperature sudden or gradual?
Consider the following data for a range of materials. In which of the following situations is creep likely to occur? Melting temperature of various materials: Melting Temperature (°C Material Ti alloy 1668 Carbon steel 1375 Alumina 2070 Nylon 66 polymer 262 A carbon steel component under continuous load in a power station operating at 200°C. A nylon pipe carrying fluid at 125K. All of the scenarios. A Ti alloy in a turbine operating at 350°C. An alumina ceramic component in a furnace operating at 600°C.
room temperature plastic deformation of pure lead (pb), with recrystallization temperature of -4, will enhance its: a. tensile strength b. modulus of elasticity c.ductility d. none of the above please explain
In a laboratory creep experiment at 1273K, a steady-state creep rate of 5 ××10-1 %, per hour is obtained in a metal alloy. The creep mechanism for this alloy is known to be dislocation climb with an activation energy of 200 kJ>mol. Predict the service temperature in (°C) for a creep rate of 8.68 ×10-5 %, per hour. (Assume that the laboratory experiment duplicated the service stress.)
1. Dislocations: What Are They? What makes them significant in metals and alloys? By drawing a 2D ball and stick model, you can highlight the key characteristics of an edge dislocation, including the extra-half plane, dislocation center, slip plane, sense vector, and Burgers vector. 2.What are the Burgers and sensation (dislocation line) vectors used for? Please answer all with full detail
Calculate the activation energy in J/mol for creep for an alloy having the steady state creep behavior shown in the figure. Use the data taken at stress level of 300MPa and temperature of 650C and 730C. Assume that the stress component n is independent of the temperature.
The stress for low alloys steel at which plastic deformationbegins Is 475 MPa, and the modulus or elastlcity ls 315 PA What is the maximum load that may be applied to a specimenwith a eras sectional area of 300 mm2 without plastic deformed If the original specimen length is 120 mm what is the maximumlength to with may be stretched without causing plastic deformation?

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