Why does the tensile fracture occur suddenly?

Q: Under what conditions may a ductile material undergo a brittle fracture?

A: In some cases ductile materials will fail in brittle the causes for this behavious includes 1)…

Q: In tensile test a plain carbon steel specimen has a (40mm) gauge length and the Final area (A final)…

A: GivenL=40mmAfinal=264.327  mm2P=122.5kNLf=47.516mm

Q: Describe how a brittle fracture occurs?

A: Brittle materials are those materials when subjected to stress fails without any sign of failure.…

Q: Sketch the stress-strain curve of the following tension test??? In the tension test of a metal…

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Q: Are fatigue striations always visible on a fatigue fracture surface? If not, under what conditions…

A: Answer Fatigue Striation : these are the marks induced on the surface of fracture and goes on…

Q: Which kind of fracture is associated with each crack propogration? (ductile or brittle) 1)…

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Q: ) What is the relation between stress at the tension side and diameter of the fatigue test specimen?…

A: (a) Relation  between stress at the tension side and diameter of the fatigue test specimen (b) The…

Q: Do the irregularities vary from specimen to specimen in tensile fracture?

A: The tensile strength of the same specimens can be identical, but the surface irregularities are not…

Q: What is the magnitude of the maximum stress in MPa that exists at the tip of an internal crack…

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Q: Some material has the mode I fracture toughness of KIC= 91 MPa-m/2. What is the critical size of…

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Q: How to experimentaly determine Fracture toughness K1c?

A: Fracture toughness K1c

Q: WHAT DOES TENSILE TEST FRACTURE INDICATE AND CONFIRM .COMPARE DIFFERENCES IN STRESS STRAIN CURVE FOR…

A: The tensile testing is one of the types of mechanical testing which is used to determine the…

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: Sketch the stress-strain curves for two ductile metals (A and B) that fracture at the same total…

A: Since it is given that the total strain at the time of fracture of both the bodies A and B is the…

Q: Interpret the following properties of brittle fracture and ductile fracture in terms of: Crack…

A: Solution: To Find: (a) Crack propagation in brittle and ductile fracture. (b) Preferred mode of…

Q: Calculate the theoretical fracture strength of a brittle material wherein fracture occurs by…

A: As per given question  Strss=1200mpa Crack=0.25mm Radius of curvature =1.25×10^3 mm We have find…

Q: Impact test is Testing fracture characteristics under high strain rates Select one: True False

A: the given statement is true.

Q: As a fatigue crack grows from its initial length to its final length, does it spend most of its life…

A: Fatigue failure: Fatigue failure is defined as the formation and the propagation of the crack in a…

Q: Describe the differences between the Brinell, Vickers and Rockwell hardness tests.

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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: 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 are the important points on the stress-strain diagram?

A: The stress-strain diagram for a material explains the relationship between the stress and strain of…

Q: If a brittle material has a stress-strain diagram, Is it different in tension and compression?

A: Brittle materials such as glass, concrete do not have yield points and they do not strain to harden.…

Q: Why do the Brittle materials fail in tension?

A: Brittle materials do not undergo significant plastic deformation. They thus fail by breaking of the…

Q: You are a defect analyst, the fracture surface appears relatively smooth to the eye, but under…

A: Option A is correct.

Q: Under what circumstance could a fatigue crack become nonpropagating, even though the component…

A: Fatigue cracking is one of the primary damage mechanisms of structural components. Fatigue cracking…

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

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

Q: In the tensile test experiment, one of the following is correct regarding the final fracture:

A: Ans : last option is correct. he fracture occurs anywhere in the smallest cross sectional-area of…

Q: What type of fracture has occurred for the specimen

A: Two types of fracture generally occurs in specimen. Ductile fracture Brittle fracture        Many…

Q: (a) What are the characteristics of the surface of a ductile fracture and a brittle fracture of a…

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Q: What is the definition of fracture toughness?

A: given; what is the definition of fracture ??

Q: On what does a tensile fracture generally depend?

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Q: A tension test was conducted for a cylindrical specimen of stain-less steel having an initial…

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Q: What types of conditions give rise to the formation of cracks at the stress concentration?

A: Stress concentration The region where the amount of stress suffered by the applied load is more than…

Q: Where Expressions from the linear theory of elasticity are in use?

A: The linear theory of elasticity is one of the most successful theories which tries to describe the…

Q: Do most materials exhibit both ductile and Brittle behavior?

A: Example of ductile materials is  Mild steel  copper aluminium  plastics  rubber

Q: Draw a graph showing the elasticity, flexibility, and brittleness property in terms of stress and…

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Q: Why does the brittle fracture occur in a torsion test?

A: Brittle fracture occurs in torsion test. Brittle fracture occurs mainly when there is sudden failure…

Q: 4. The gauge of the Impact Testing Apparatus shows 52 divisions. Calculate the amount of energy…

A: Answer: The amount of energy absorbed per unit surface area prior to fracture is 1300 kJ/m2.

Q: 7. Explain the major and minor loads used in the Rockwell hardness test. Which of these loads did we…

A: The Rockwell hardness is given.

Q: (c) A cylindrical metal specimen having an original diameter of 12.5 mm and gauge length of 50.00 mm…

A: C) The property of the material to change its shape but without losing its properties such as…

Q: Ability of material to undergo permanent deformation without fracture is called

A: Option (A) Plastic deformation. is correct option

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.