If cracks are present in the metal, they are removed through cold working. Select one:
Q: What is elongation testing?
A: Elongation testing is a measure of far stretching of a sample before it breaks. The result is…
Q: a) Draw the stress strain curves for metals, polymers and ceramics?
A: Given Data⇒ Stress-strain curve for metal, polymers, and ceramics
Q: Describe how a brittle fracture occurs?
A: Brittle materials are those materials when subjected to stress fails without any sign of failure.…
Q: What is Circumferential Stress?
A: Circumferential Stress When pressure inside thin pressure vessel exceeds it exerts force from inside…
Q: Solidification cracking in weldments occurs at 1) moderate temperature 2) very high temperature 3)…
A: Given :- Solidification cracking in weldments occurs at 1) moderate temperature 2) very high…
Q: When EAC processes are active, under what condition does final fracture occur?
A: The EAC or Environmental Assisted Cracking is the process in which a machine part gets fail due to…
Q: When a material is subjected to repeated stresses it will not fail without any prior indications.
A: When we apply repeated load on a material, then the properties or strength of the material will…
Q: Fatigue cracks may happen due to weakening of surface layer in hot working. Select one: True False
A: Given :- Fatigue cracks may happen due to weakening of surface layer in hot working. Select one:…
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: What does the region of strain hardening cause?
A: The working of the metals below their recrystallisation temperature is known as cold working…
Q: What is period of deformation?
A: The period of deformation can be defined as
Q: What is creep strength?
A: Creep is the phenomena of deformation of a body which is time-dependent. It occurs when a load is…
Q: Strain hardening is more visible in _______ process. a. Hot rolling b. Hot drawing c. Tube forming…
A: Option d is correct (Cold rolling )
Q: On a stress strain curve for structural steel, show various points like proportional limit, elastic…
A: Objective: To draw the stress-strain curve for steel, show points like proportional limit, elastic…
Q: What are ratchet lines, and how are they arranged with respect to the fatigue crack front and any…
A: Ratchet lines are steps in fatigue fracture surfaces that originate from the interaction between…
Q: Simple stress and strain pleasee help
A: Given Diameter = 150 mm Gauge length = 300 mm Scale for graph 25 mm = 50 mm 25 mm = 0.2 X 10-3 mm/mm…
Q: What is the permanent strain?
A: Strain: When a force is applied to any system, they deform based on the applied force. The…
Q: What is the boundary layer lubrication, how it affects the movement of metal parts?
A: Boundary layer lubricant: The boundary layer lubricant is the thin molecular film of lubricant which…
Q: (a) Draw two Engineering Stress - Engineering Strain graphs: one for a ductile metal and one for a…
A:
Q: What do the normal strains cause?
A:
Q: Why is it crucial to determine the angle of repose and angle of friction of different grain?
A: The point of rest is significant for the plan of handling, stockpiling, and conveying frameworks of…
Q: Q1: Comparison between behaviors of brittle and ductile metal of stress- strain curve?
A: we are to compare stress strain relationship in ductile and brittle materials
Q: What is the tensile strength of a metal if its endurance limit is 84675 psi?
A: Given that the endurance limit of the material is 84575 psi. Write the endurance limit formula,…
Q: As a crack advances, what happens to the stiffness of the cracked body? What happens to the…
A: from the above graph For condition one we can say that Stiffness decreases when the crack advances.
Q: Stresses applied to plastically deform the metal are usually compressive. O F
A: To get the material plastically deformed it is necessary that stresses are applied beyond the…
Q: What is the permanent deformation?
A:
Q: Which metal often does not have a well-defined yield point and which procedure is suitable to yield…
A: Answer : Yield point : It is defined as that point after which material does not regain its original…
Q: How are the Normal and Shear Stress Components used?
A: Normal stress is defined as stress which induced due to the outside force acting normally on a…
Q: Why the metal acts more plasticity and high ductility with increase the temperature during forming?
A: Let us discuss about plasticity and ductility of metals.
Q: 1) Which of the following statement(s) is/are correct? i. Cold-rolling is used to produce sheet and…
A: Explanation1)Due to low temperature in cold-rolling operation no scale formation takes place. so it…
Q: When a material breaks suddenly with no sign of deformation, what is it said to be?
A: Brittle Material
Q: Why are cracks & notches prone to fracture propagation?
A: For any kind of crack or rapture in an object, there multiple factors that bring about failure.…
Q: What is true stress and true strain?
A: To define: True stress True strain Stress: It is defined as the internal resistance developed at a…
Q: What property of a metal describes its ability to be easily drawn into a wire but not rolled into a…
A: Engg. materials are used as per their properties for the various engg. works. Each material have…
Q: Describe how a ductile fracture comes about?
A: Answer : Ductile Material are those materials that go through substantial plastic deformation before…
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: What would be the result of the Yielding of the material?
A: In stress-strain curve of material the yield point is the point of elasticity. Yield points shows…
Q: Provide a precise definition of the cross-product. And give an explanation of how it relates to…
A: for solution refer below images.
Q: Define the slip and how it is found?
A:
Q: For the case of a center notched panel that is loaded by concentrated forces acting at the crack…
A: Notched part in a component is the weakest part because at this part the inducement of stresses is…
Q: What is Residual Stress?
A: Whenever a body is deformed beyond the elastic limit it is unable to regain its initial shape. Due…
Q: A method of determining the result of heat treatment as well as the state of a metal prior to heat…
A: Solution: Heat Treatment of metals is done to enhance their mechanical, physical and chemical…
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: Discussions Why is a minimum thickness of at least ten times the depth of the impression required in…
A: Given: Discussions Why is a minimum thickness of at least ten times the depth of the impression…
Q: How we can measure shear modulus?
A: Shear modulus or modulus of rigidity can be found from the torsion test. As a result of the twisting…
Q: Describe the relationship between stress and strain according to Hook's law?
A: The relationship between stress and strain according to Hook's law
Q: QUESTIONS 1. Define the terms load, stress and strain. Discuss the various types of stresses and…
A: We are suppose to solve only one question. Please post other question as a separate question.
Q: A) What are the two conditions for causing a part to break by crack propagation? Are the following…
A:
Q: 5) Which of the following statement(s) is/are correct? i. The lower temperature limit for…
A: Both the statements are correct
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Solved in 2 steps
- Which metal often does not have a well-defined yield point and which procedure is suitable to yield its strength?Effect on Mechanical Properties via Control of the Slip Process?A cylindrical specimen of cold-worked copper has a %CW of 20%. If its cold-worked radius is 6.4 mm, what was the radius before deformation?
- A) What are the two conditions for causing a part to break by crack propagation?Are the following elements favorable or unfavorable to crack propagation in a metal alloy? Justify your answer.1. Presence of heterogeneities;2.Increase in the volume of the piece;3. Good finish4. Presence of porosity;5. Increased ductility;6. Increased work hardening;7. Decrease in grain size.estimate the hot forming temp. for aluminum has a melting point 660°CFor materials that have very low ductility and high strength and room temperature what is often used to avoid cracking and achieve a large reductions in area, while accepting some surface oxidation to take place.
- Briefly discuss the following, d) Why alignment of the specimen is is important in compression test? e) Which is the IS code used for compression test on metals?Describe the experimental process from the preparation of the metal tensile specimen to the tensile test. And investigate the basic properties of Al.Cold working of metals will give better final properties than hot working. Select one: True False