Q1. (i)InitialstrainPlease enter your answers hereQ1. (i)YourAnswers:Please enter your supplied question dataQ1. (ii)E0B (hr1¹Pa-¹)nFracture0.0034.60E-34Mechanics of Materials 2Tutorial 6Q1. (ii)EGeneral guidance on the Tutorial Portfolio assignment was provided at the beginning ofTutorial Exercise 1 and is available separately on-line on the module website.B3.2AQ2. σ (Pa)σo (Pa)780,000,000This tutorial exercise assesses fundamental understanding of the creep and stress relaxationresponse of metals subjected to either constant load or constant strain. It is designed toreinforce learning of principles set out in your current stage 2 lecture notes in "Creep Failureand Stress Relaxation" and to build on knowledge previously presented in the stage 1 module"Solids & Structures".CQ3. t (hr)For further information you may refer to Chapter 21 (Creep and Viscoelasticity) of Benham,Crawford, and Armstrong (1996), 2nd Ed.Q1. A typical graph of strain (e) versus time for a metal under creep conditions isshown below.Tutorials Portfolio: Exercise 6D1EtimePlease select the correct labels from the graph above that correspond to the phasesof a creep curve given to you for input values for Q1. (i) and Q1. (ii) and write youranswers in the table on the cover sheet for [Q1. (i) and (ii)]. Note: your answers shouldstate the letter that corresponds to the appropriate region described by the terms youwere given, e.g. A, B, etc. Q2. A component is made from a metal that is known to be viscoelastic andbehaves according to a secondary creep rate equation with constants of B and nprovided as your input values.If the component is subjected to a constant force that results in the initial strain of coprovided to you, determine the design stress for a secondary creep life of 1,000 hrsbefore attaining a limiting strain, &t, of 0.01.Design Stress, o =Pa3Mechanics of Materials 2Tutorials Portfolio: Exercise 6Q3. If the same component is subjected to a constant displacement that results inthe value of initial stress, o, provided to you, calculate the time for the stressto reduce to 200MPa. Young's modulus of the bolt is E = 200GPa.

Creep is a below-the-yield strength of metal, the type of metal deformation that occurs at stresses…

Answered: Q1. (i) Initial strain Please enter…

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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1. For the stress-strain curve shown below, please estimate the properties indicated. (a) Fracture Strain Please do your work on a separate sheet of paper, and put your answers in the boxes on the right. Be sure to include the proper symbol and units. Stress Strain 70 60 50 Stress (ksi) 240 30 20 10 70 0 0.000 60 50 Stress (ksi) 40 20 10 KULL 0 0.000 0.010 0.050 0.100 Strain (in/in) Stress Strain 0.020 0.030 Strain (in/in) 0.040 0.150 0.050 (b) Ultimate Tensile Stress (c) Fracture Stress (d) Proportional Limit (e) Elastic Modulus (1) Yield Stress (g) Tensile Toughness (Modulus of Toughness) (h) Modulus of Resilience
When an object is placed underwater, the pressure on the object is subjected to uniform stress on all sides. a) define volume strain, the bulk modulus, compressibility, and the relationship between the bulk modulus and compressibility. b) A 100 litre volume of liquid is subjected to a 2000 psi increase. If the compressibility of the liquid is 5 x 10-5 per atm, find the bulk strain and absolute decrease in the volume of the liquid c) explain the concepts of shear stress and shear strain? could these concepts be applied to the fluid problem above?
Please help. Written on paper not typed on computer or keyboard please. Need help on all questions. Please include all units, steps to the problem and information such as its direction or if it is in compression or tension. Thx.
1. 1100 A. 30% B. 1.1 m 1.0 m A F= 255 N 0.5 m 1.5 m DGB WARNING! The figure is not drawn to scale. For the force in the chain CB, ca IMAGES NOTES DISCUSS UNITS STATS HELP PREFERENCES Part Description the magnitude of component parallel to the hinge axis of the door, (include units with answer) 0.5 m Answer 118.77 N Format Check the magnitude of the component parallel to the edge of the door that 218.17 N is perpendicular to the hinge axis, (include units with answer) Format Check Save 25 pts.7 75% 5% try penalty 31.67 pts.95% 5% try penalty Status Tr ● W #tries: ** Tr • W. #tries:
An aircraft component is fabricated from an aluminum alloy that has a plane strain fracture toughness of 31 MPa/m. It has been determined that fracture results at a stress of 227 MPa when the maximum (or critical) internal crack length is 2.47 mm. a) Determine the value of Yo√a for this same component and alloy at a stress level of 340 MPa when the maximum internal crack length is 1.24 mm. i MPa √//m b) Under these circumstances will the component fail? No Yes Unable to Determine 3
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.
Question 5: Following is tabulated data that were gathered from a series of Charpy impact tests on a tempered 4140 steel alloy. Temperature (°C) 100 75 50 25 0 -25 -50 -65 -75 -85 -100 -125 -150 -175 Impact Energy (J) 89.3 88.6 87.6 85.4 82.9 78.9 73.1 66.0 59.3 47.9 34.3 29.3 27.1 25.0 (a) Plot the data as impact energy versus temperature. (you can use Excel or other software). (b) Determine a ductile-to-brittle transition temperature as that temperature corresponding to the average of the maximum and minimum impact energies. (c) Determine a ductile-to-brittle transition temperature as that temperature at which the impact energy is 70 J.
Question 21 Ability of material to undergo permanent deformation without fracture is called A. Plastic deformation O B. Stiffness C. Toughness D. Elastic deformation A Moving to another question will save this response. e l: 34°C aolo claw ENG 4) . hp

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