What important quantity (or quantities) can be determined by measuring striation spacing?

Q: How is the nominal or engineering strain found directly from the strain gage?

A: Engineering strain is defined as ratio of total amount of stretch that a part undergoes or the…

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

A: Solution:

Q: What is elongation testing?

A: Elongation testing is a measure of far stretching of a sample before it breaks. The result is…

Q: 9) Define the rolling resistance. 10) Define the slip angle.

A: Rolling Resistance It is the resistance offered by the body when it rolls on the ground or it is…

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: Define the term transverse shear?

A: The shear stress which occurs due to bending moments in a body is known as the Transverse shear.

Q: How is normal strain measured?

A: As we know that strain is a change in length over original length.

Q: Distorted grains are completely removed and fresh new grains are formed in Cold Working Select one:…

A: In cold working process the plastic deformation of the material takes place under low temperature…

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 Strain Energy?

A: The energy stored within a deformable material when it undergoes elastic deformation under an…

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: 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: 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: 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: 2. Which of the following are responsible for residual stress and distortion?

A: Residual stresses are the stresses in the material remains in the material after the removal of the…

Q: When the instantaneous load is applied parallel to the specimen cross section, the material is under…

A: As per given question  When the instantaneous load is applied parallel to the specimen cross…

Q: What is the permanent deformation?

A:

Q: Name the mechanical or optical device or the measurement and calculating the strain?

A: Strain refers to the deformation produced in the body per unit length or dimension in response to…

Q: 8) Which of the following statement(s) is/are correct? i. Warm working is the plastic deformation of…

A: There are basically 3 types of workings: 1) cold working 2) warm working  3) Hot working Warm…

Q: What is the Strain Rosettes?

A: Strain rosette is the combination of three liner strain gauge placed in three direction. The measure…

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: 5) Draw the stress-strain curve and gives the stress and strain equations for both Engineering and…

A:

Q: What is maximum deformation?

A: Given Deformation To find Maximum deformation

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: 14 1. Wrinkling II. Tearing III. Earing IV. Surface scratches Which are some of the possible defects…

A:

Q: How is Dilatation, or volumetric strain caused?

A: Dilatation or volumetric strain: The volumetric strain or dilatation is defined as the change in…

Q: Can the Shear stres also occur during axial loading?

A:

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

A: Introduction: Creep rupture: Creep rupture, also known as stress rupture, is the process by which a…

Q: 2. In 4-point bending, it has a higher probability that defects will exist due to a larger volume of…

A: The stress concentration of a three-point test is small and concentrated under the center of the…

Q: How is the Strain energy caused?

A: Strain energy is the energy that is caused due to deformation in a body. The area under the…

Q: force and bending-moment diagrams on paper and use the results to answer the questions in the…

A:

Q: Stress and strain: What are they and why are they used instead of load and deformation?

A:

Q: How did temperature affect the toughness of the specimens?

A: temperature affecting the strengths of the toughness . IMPACT TOUGHNESS        Toughness is the area…

Q: Why does the shear center always lie on an axis of symmetry of a member?

A: Shear center can be defined as the point that is positioned on a beam where the load applied on it…

Q: What is tensile testing?

A: Tensile testing is a testing of the specimen in which load are applied at the ends of the specimen…

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: What are the experimental techniques used to measure the strain?

A: The experimental techniques used to measure the strain of material under the action of load comes…

Q: The negative of the ratio between constriction and engineering strain is known as _______?

A: The term representing the negative ratio of lateral strain (constriction) and engineering…

Q: In which of the following tests, the specimen is in the form of simply supported beam?في اي من…

A: Solution:

Q: What are two differences between clamshell/beach markings and fatigue striations?

A: clamshell are larger as compared to the striations It represent the location of the crack tip. It…

Q: How can the strains that act for some other orientation be determined?

A: calculation of strains.

Q: -What are the uses of the impact test?

A: Impact Test Objectives : The main objective of impact test is to measure dynamic toughness and notch…

Q: 5) Which of the following statement(s) is/are correct? i. The lower temperature limit for…

A: Both the statements are correct

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.