When does the Fatigue occur in the material?

Q: How do temperature and fretting factors affect the fatigue life of a component made from metal…

A: Fatigue Life : Definition - Fatigue Life is refer as the deformation and failure behavior of any…

Q: Using the Animated Figure: S-N Plot for Brass for a brass alloy determine the following: (a) the…

A: S-N Plot for Brass for a brass alloy determine the following: (a) the fatigue…

Q: For steel, the energy to produce tensile failure is 105Jm 2 (i.e. fracture energy), modulus of…

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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: Why does the brittle material fails in helicoidal shape and ductile material shears on right section…

A: introduction; brittle material fail in tension. and ductile material fail in shear because ductile…

Q: A rod of length 1.6m long has a diameter of 0.5m wide. this rode is made of 52100 chromium steel…

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Q: Why should the theories of failure for brittle materials be used with caution?failure for brittle…

A: Theories of Failure: Theories of failure are those theories that predict the safe measurements of a…

Q: Why is it called Mohr’s failure criterion?

A: Mohr’s failure or Mohr-Coulomb failure is the general type of failure theory it simulates the…

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: What is R curveand the condition for crack  instability?

A: Explanation: R curve stands for crack-extension resistance curve or resistance curve. This curve…

Q: When does the mean stress level affect fatigue crack propagation rates in metal alloys?

A: A component is subjected to a fluctuating stress fails at a stress much below their static strength.…

Q: Creep can be defined as;

A: In materials science, creep (sometimes called cold flow) is the tendency of a solid material to move…

Q: Discuss the factors influencing the ductile-to-brittle transition in materials?

A: The ductile-to-brittle transition is a phenomenon that involves a change in fracture behavior of…

Q: What is the behavior of a material according to Hooke's law?

A: Hooke’s law deals with the elastic property of a material.   As per Hooke's law the strain produced…

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: When can the Ductile failure be defined?

A: Let us consider a ductile material under loading conditions. The stress and strain values induced in…

Q: Why do most materials exhibit fracture strengths much lower than their theoretical capacities to…

A: In theory, the calculations are done by assuming that the material is ideal i.e there is no defect…

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: Define the term Creep?

A: The tendency of any solid material to undergo permanent deformation under the action of persistent…

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: How can the modulus of elasticity of the material be determined?

A: Elastic modulus(E) is constant for a given material .It is given by the ratio of stress and strain…

Q: Cold working is the good way to shape brittle material Select one: O True O False

A: Cold working  is a  metal working process in which metal is reshaped below its recrystallization…

Q: Describe the appearance of a fatigue fracture?

A: When a specimen or a component is subjected to a repeated load or cycling load, it may fail below…

Q: Can the maximum normal stress theory or Mohr’s failure criterion be used in practice to predict the…

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Q: How does the material behave in a linear elastic manner?

A: Answer : linear Elastic Materials :  The materials which satisfies both condition i.e, linearity as…

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: What role can a notch or a flaw play in determining the total fatigue life of a component?

A: Fatigue Life of a component: The number of cycles of stress-strain which a specimen can withstand…

Q: Ductile and brittle fracture (what are they, how do they look under microscope)

A: Ductile fracture is a type of fracture characterised by a broad plastic deformation or "necking."…

Q: Is the fatigue responsible for the materials?

A: Fatigue: The failure of a material to the repeated cyclic loads applied on it is termed as Fatigue.…

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: Which is the correct definition of elastic deformation? The behavior of a material when its size…

A: When a load or force is applied on a material, initially it is subjected to Elastc deformation and…

Q: The R-ratio (minimum stress to

A: Given data; Determine the R ratio for this cyclic loading.During a high cycle fatigue test, a…

Q: What is the failure due to fatigue? What factors influence the fatigue strength of the material?…

A: Fatigue failure is the formation of cracks due to repetitive load which results in the damage of the…

Q: What is fatigue? What does being tired mean? Factors affecting fatigue? Types of Fatigue Tests?

A: “Since you have posted a question with multiple sub-parts, we will provide the solution only to the…

Q: What is the cause of the fracture of a brittle material?

A: Brittle fracture is one which takes place without any appreciable plastic deformation and by rapid…

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: Why fracture strain for metals (Aluminum, Mild Steel) in pure share is higher than pure tension?

A: fracture strain for metals (Aluminum, Mild Steel) in pure share is higher than pure tension because

Q: 3. Labeled S-N curve for fatigue, fatigue crack growth curve and creep curve for a metal.

A: for solution refer below images.

Q: The paris law of fatigue growth of a Crack is known to have the form! da dN =c(AK) Where a is in…

A: Given:The maximum shear stress is the Paris law of fatigue growth of a crack is the initial length…

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

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

Q: B/What are the considerations for Rockwell hardness?

A: Following are some of the considerations for Rockwell Hardness test:

Q: The stress-strain relation shown in the Figure below was obtained during the tensile test of an…

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Q: Give some examples of brittle materials?

A: Brittle material is a kind of material in which breakdown occurs under very small tensile loads.…

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.