How can the fatigue be prevented?

Q: What are the factors that affect the ultimate choice of the material?

A: There are two important principles that should apply to materials for their ultimate choice:…

Q: Effect of heat treatment on fatigue life of Aluminum

A: heat treatment is used to improve the mechanical properties of the material. The heat-treated…

Q: Describe how a brittle fracture occurs?

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

Q: Components that suffered fatigue failure during operation can be identified byseveral characteristic…

A: Some characteristic features of fatigue failure in components include:Explanation:Crack Initiation:…

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: 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: How can we develop a method for finding the support reactions?

A:

Q: Explain crack initation and propagation during metal fatigue? Explain factors that affect fatigue…

A: CRACK INITIATION Fatigue is a cascade of crack forming and production processes, which relies on…

Q: Why is it important to know the suitable fabrication/processing technique to be used for a certain…

A: Metal fabrication/processing technique: Metal fabrication meaning creating the desired shape/ sized…

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 is Strain hardening used? How is it performed?

A: Strain hardening is used when there is a need to increase the hardness of the material. It also…

Q: 8 mm long is subjected to a uniaxial stress đo = 120 MPa. Determine the stress intensity factor Kị.…

A:

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: 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: 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: 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 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: Explain the process of annealing aluminum sheet

A: Annealing aluminum sheet is a heat treatment process used to enhance its properties by relieving…

Q: What fracture surface feature is often a clue for the presence of environment-assisted cracking in…

A: Environmental assisted cracking(EAC) refers to brittle fracture of a ductile material due to…

Q: What two general competing processes control the creep rate of a metal? What is the relative…

A: The two general competing processes that control the creep rate are strain hardening and strain…

Q: Why is fatigue generally less of a problem with ceramics and glasses than with metals and polymers?

A: Fatigue is defined as a mechanical failure in which material is failed under its yielding strength.…

Q: Why inclusion can decrease fatigue strength?

A: Fatigue strength is the measure of maximum stress for a material which can sustain without failure…

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: What is a fatigue limit, and what relevance does it have for lifetimes in the gigacycle (109)…

A: Fatigue is a kind of failure that occurs in a material when they are constrained to repeated…

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: 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: For materials that have very low ductility and high strength and room temperature what is often used…

A: The materials that have low ductility as well as high strength at room temperature are prone to very…

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 possible defects of MIG welding on stainless steels?

A: Metal Inert Gas Welding Metal Inert Gas Welding uses consumable electrode and it is used to join…

Q: Describe how a ductile fracture comes about?

A: Answer : Ductile Material are those materials that go through substantial plastic deformation before…

Q: Analyze the effects of thermal stress?

A: Thermal stresses can be induced either by temperature gradients in mechanical components and…

Q: Micro-hardness profiles were obtained for the tool steel, the weld zone and stainless steel. Figure…

A: A statement is given that " the dents on the stainless steel is larger than those on the tool…

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: the ctrocc con strocC con

A: The effect of stress concentration factor under static loading is not serious for ductile materials…

Q: Mention the factors influencing corrosion

A: Factors influencing the corrosion:-

Q: t it is tha

A: Given data SEM Image of fracture surface is given  Required  Identification of types of fracture…

Q: Is the deformation always uniform throughout the body?

A: Whenever a force is applied to a body, it changes its shape and size.deformation in the body may be…

Q: Explain the mechanism of the corrosion fatigue and thermal fatigue, how to prevent/protect from your…

A: Corrosion fatigue: It is failure of a material due to the corrosion acting on it. The material…

Q: How can corrosion lead to fracture?

A: Corrosion It is a natural process that is generally observed in metal in which the metal react with…

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: When does fatigue occur in metals?

A: Many times force acting on the mechanical component varies in magnitude from a positive value to the…

Q: How can some nonferrous metal alloys such as aluminum or Monel be hardened?

A: How can some nonferrous metal alloys such as aluminum or Monel be hardened?

Q: List three general categories of surface treatment that can increase fatigue life, and provide one…

A: The three general categories of surface treatment that increase fatigue life are: 1. Case hardening…

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.