Describe the general trends that connect stress level and temperature with steady-state creep rate and rupture life.

Q: Welds, machining tool marks, and stress reversals, such as those in rotating parts, can cause a…

A: Solution:

Q: A. Which parameters are used for passage from real multi-axial stress condition to one-axial…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Which material/metal is the stiffest based on the following data provided and why?

A: Concept: 1) Stiffness is ability of material to resist deformation against applied load.  2) For the…

Q: a) Draw the stress strain curves for metals, polymers and ceramics?

A: Given Data⇒   Stress-strain curve for metal, polymers, and ceramics

Q: Why do the Ductile materials fail in shear?

A: Ductile materials are the materials which goes plastic deformation before the fracture. When any…

Q: There is a disagreement about a spring steel failure and you, as an independent material scientist,…

A: Given: Case Disagreement about steel spring failure To identify  Failure origination.

Q: What is Circumferential Stress?

A: Circumferential Stress When pressure inside thin pressure vessel exceeds it exerts force from inside…

Q: Does consideration of creep become important when materials are in service for long periods of time?

A: Creep: When a part of any member  is subjected to constant stress at high temperature for a long…

Q: Is the maximum shear stress theory is based on the idea of slipping that occurs in ductile failure?

A: The maximum shear stress theory also known as Guest and Tresca's theory states that the failure of a…

Q: b Discuss the qualitative changes of burst and collapse resistances when the casing string is become…

A: (b) As axial stress is applied to a pipe, its collapse and burst resistance changes (tension or…

Q: How can we determine the deformation of an axially loaded member?

A: Whenever a member is loaded axially there is change in the dimensions of the member. Length of the…

Q: Give an example of the single shear failure?

A: Shear is caused by the action of two opposite and equal forces acting on a material. If the two…

Q: What data would have to be collected to determine the stress exponent for creep? What plot axes…

A: The creep strain rate is written as, From the above expression, the necessary required data are…

Q: Does the creep strength vary with temperature?

A: Creep: When a part of any member  is subjected to constant stress at high temperature for a long…

Q: What type of behaviour is observed from these stress-strain curves?

A: Consider the diagram shown below for the stress-strain curve. P: proportional limit Y: yield point…

Q: In what class of material is stress whitening often seen, and what is the physical origin of the…

A: The phenomenon of stress whitening is generally observed in amorphous solids. However, it may also…

Q: give an example  proving that most materials exhibit both ductile andbrittle behavior?

A: As the temperature of the material decreases the ductile material loses its ductility and brittles…

Q: During plastic deformation anisotropy in sheet metals can: a have adverse effect during the…

A:

Q: Since the Creep is the time rate of deformation, when does it occur?

A: Creep: When a part of any member  is subjected to constant stress at high temperature for a long…

Q: What visual evidence supports the presence of significant grain boundary sliding in many creep…

A: Irregular atomic bed displacement occurred due to grain boundary sliding. These displacements of…

Q: How would you know if there were different creep mechanisms acting at different temperatures?

A: Creep: When a part of any member  is subjected to constant stress at high temperature for a long…

Q: In a typical engineering stress-strain diagram, stress keeps on increasing after yield point due to…

A: Stress Strain Curve is a graphical representation of the behaviour of a material when a load or…

Q: Define rate of linear deformation?with unit

A:

Q: (C) A plain sided specimen is subjected to 2 * 107 cycles at the applied stress range of 100 MPa.…

A:

Q: State and explain the theories of failures applicable to  Brittle material.

A: The theory of failure applicable to brittle material is maximum principle stress theory or ranking…

Q: What should be the basis in comparing the strength of two different materials? The applied load or…

A: Answer is given below

Q: Having stress-strain relationship of ductile materials in your mind, highlight the differences…

A: When an amount of repeated load act on an material then the factor of safety at the yield strength…

Q: 7) Explain the concept “wide spread fatigue damage”, its origin and consequences. Give an example of…

A: Widespread fatigue damage (WFD) in a structural failure. It is signified by the occurrence of…

Q: Draw a stress-strain curve for a low carbon steel and explain important points and regions in…

A: Given Material Low Carbon Steel Find Stress-strain curve

Q: 11. List the conditions that can induce brittle failure even in a ductile material.

A: Conditions that can induce brittle failure even in a ductile material- 1. High Strength Material are…

Q: Distinguish between the Brittle material and the Ductile material?

A: Brittle Materials: These materials elongate on the application of load to the materials. They can…

Q: What is fatigue loading? Explain why it is dangerous.

A: The initiation and propagation of the crack in a material due to cyclic loading is called as…

Q: Since Creep is the time dependant deformation of a material, does temperature or stress play an…

A: Although creep is a time dependent phenomenon, temperature and stress causes the creep to…

Q: Why is heat treatment typically an integral part of the process flow for bulk deformation of metal?.

A:

Q: What is the difference in appearance between ductile & brittle fractures?

A: Fracture is a phenomenon in which body is separated into two or more pieces under the application of…

Q: Consider the tensile stress strain curves in Figure 8-20 labeled 1 and 2 and answer the following…

A: (a) Work hardening is a process used in order to increase the hardness of the workpiece by…

Q: Perfectly thermal, the material has a purposely sharp temperature. Why doesn't this process fracture…

A:

Q: Q12. How would a creep profile on a brittle material looks like?

A: How would be creep profile on a brittle material.

Q: When materials are in service for long periods of time, why does the considerations of creep become…

A: Creep is the natural tendency of a material to gradually move or permanently deform as a result of…

Q: In the flow curve for pure aluminum, the strength coefficient = 175 MPa and strain-hardening…

A:

Q: On a stress strain curve for structural steel, show various points like proportional limit, elastic…

A: Stress-Strain Curve for steel Point A is the proportional limit Point B is the elastic limit  Point…

Q: sketch the following mechanical behavior on the same graph: linear elastic,linear elastic perfectly…

A:

Q: Engineeringly explain the reason why the difference in impact absorption energy occurs between each…

A: The effects of carbon content and heat treatment type influence on absorbed energy property of the…

Q: a) Explain the term Thermal Fatigue. In which situations it is very prevalent. Write down the…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: What are circumstances in which the possibility of Creep rupture May Safely be neglected?

A: In this solution, we shall try to understand with the help of an example where possibility of creep…

Q: effect on mechanical properties via control of the slip process.briefly explain?

A: Effect on mechanical properties via control of the slip process:;   A slip system is a mix of a…

Q: 6) Chapter 3: Problem 3.7: (USCS Units) The flow curve for a cestain metal has a strain-hardening…

A: Given data: n=0.2k=26000 lb/in2 Need to determine the flow stress and rue strain.

Q: The stress element corresponds to a point under a flat stress state, on the surface of a part made…

A: For the given stress element  if yield strength (Sy) is 700 MPa   To determine  (a) f.o.s according…

Q: Effect on Mechanical Properties via Control of the Slip Process?

A: a) A slip framework is a blend of a slip plane inside a translucent material(preferred plane fir…

Q: Describe the nature of the load and strength distributions in four practical engineering situations…

A:

Q: Table 4 shows the fatigue data of a ductile cast iron to be used for an automobile axle that rotates…

A: a)

Q: (c) What is the difference between Yield strength and Ultimate strength? Explain these terms with…

A: Difference between yeild strength and Ultimate strength

Q: Is it very important to use stress concentration factors for the design of members made of brittle…

A: Stress concentration factors for the design of members made of brittle materials;

Q: What is the maximum value of KIc as per LEFM that can be determined from experiments on a 20 mm…

A: Givent=20mmσy=500MPaE=210GPaμ=0.3

Q: Given that the 106-cycle fatigue limit is often approximately half of the tensile strength of a…

A: given: Given that the 106-cycle fatigue limit is often approximately half of the tensile strength of…

Q: Describe the stress-strain behavior?

A: Given Data⇒stress-strain behaviorProblem definition⇒Problem says Describe the stress-strain…

Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.