Analyze the effects of thermal stress?
Q: What are the principal stresses? How can they be determined?
A: Principle stresses can be defined as the maximum or minimum normal stresses on a specific plane. The…
Q: Distinguish between simple and indirect shear stress?
A: Simple shear stress also known as direct shear stress is the shear stress developed due to a…
Q: Describe Castigliano’s Second Theorem?
A: As per Castigliano’s Second Theorem: The first partial derivative of the total internal energy in…
Q: what are the real life applications of cold working and annealing?
A: Cold working is a metal forming process through which the dimensions of the metallic object can be…
Q: Describe the strain and energy?
A: When a body is subjected to any tensile or compressive forces then the body undergoes deformation…
Q: How are the stress components transformed?
A: Consider a plane truss. Let, σx and σy be the normal stress acting along x and y-axis,…
Q: Explain EXTERNAL WORK AND STRAIN ENERGY?
A: External work: Work is said to be done when energy created by all the processes taking place inside…
Q: How can we apply the general equations of plane stress transformation?
A: An object is under a biaxial state of stress when the stress exists only inside the 2-dimensional…
Q: What is thermal stress?
A: Thermal stress: When the temperature of the material is altered, the material tries to change its…
Q: Define the term Stress Concentrations?
A: Stress concentration is a location in a member under load where the magnitude of stress is…
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: In your own words, explain What are the properties that constitute physical change?
A: There are many types of changes that can be encountered on a material. These changes are related to…
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: Why should the thermal stresses be considered in design?
A: The stresses generated due to rapid heating or cooling of the structure are known as thermal…
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: If the material is ductile and subjected to a static load , is it not necessary to use stress…
A: It is not necessary to use stress concentration factors for ductile material under static loading…
Q: Why is it not necessary to use stress concentration factors if the material is ductile?
A: Stress concentration is a location in a member under load where the magnitude of stress is…
Q: What cross-sectional property is influenced by the size effect factor between the depth and width of…
A: The properties that get affected by the depth and the width of the member are given below: (A) The…
Q: Give an example of complicated stress?
A: Stress: When a body is subjected to a force/load, it develops an internal reaction in order to…
Q: What is stress transformation and why we study stress transformation at a point within a given…
A: Stress transformation is defined as the process in which various stress of different planes of a…
Q: Discuss the Importance of Heat Treatment.
A: Solution: Heat Treatment is a process to expose a material to a certain pre specified temperature…
Q: Complete the following comparative table between cold, warm and hot work:
A: The comparison between the Cold, worm, hot working given below as asked
Q: With the aid of diagrams describe the difference between latent and sensible heat for two different…
A: For solution refer below images.
Q: Why are the deformations that take place within a body are almostinfinitesimal?
A: Deformation is defined as a phenomenon in which bodies shape and size may change when it is…
Q: Discuss the technical aspects of mechanical, thermal, acoustical, and chemical properties.
A: Material properties that relate to different physical phenomena often behave linearly in a given…
Q: Define the term Shear Flow in Built-Up Members?
A: Shear flow: The built-up beams frequently face a problem of shear flow. Built- up beams are those…
Q: What is Ultimate stress?
A: Ultimate Stress The ultimate stress recognizes as the maximum value of stress that a material can…
Q: What is heat flux in thermal stress?
A: Heat Flux- Heat flux is defined as the ratio of heat transfer per unit area. Heat flux and thermal…
Q: thermal conductivity of beef?
A: Given: Q=0.8 W Thickness =1 cm Cross section=5x5 Surface temperatures, T1=28.5 CT2=23.3 C TO…
Q: Which equation will yield a direct solution to problems involving force,velocity and time?
A: Newton’s second law of motion It mathematically states the cause and effect relationship…
Q: Discuss different types of forces with examples ,describe how these forces are responsible for…
A: Force :- A force is a push or pull acting upon an object as a result of its interaction with another…
Q: When does stress concentrations become important?
A: Stress concentration is very important in the case of cyclic loading. stress concentration leads to…
Q: When does the magnitude of stress increase?
A: When a body undergoes deformation under normal or shear forces/loads, then it undergoes…
Q: and nature of stresses
A:
Q: When a statically determinate structure is heated or cooled, its members do not experience…
A: When a statically determinate structure is heated or cooled, its members do not experience…
Q: Why is knowing the stresses generated is important and not just the magnitude of the force applied?…
A: Stress is defined as the internal resisting force per unit surface to resist the deformation of…
Q: What are the different types of heat treatments? Write a detailed note on each type. How can…
A: Heat treatment is a process of heating the material to some specific temperature, holding at that…
Q: effective thermal conductivity of the composite rod is
A: Given data; Case ( 1) A slender rod of length =L Diameter =d (L>>d) Thermal conductivity =k1…
Q: If the area and temperatures are same across the material. Explain whether thermal conductivity will…
A: Thermal conductivity is a property of the material which shows the ability to conduct heat through…
Q: Explain from the engineering perspective why the two heat-treated (air-cooled and water-cooled)…
A: From engineering perspective the steel which is air cooled are generally more harder than water…
Q: Discuss the advantages and disadvantages of hot and cold working of metals.
A: HOT WORKING: the metalworking process is carried out above its re-crystallization temperature, it is…
Q: In a few words or in a single short sentence explain what kind of relationships represent thermally…
A: Thermally Activated Process A Thermally activated process is one that has to overcome an energy…
Q: The properties of some very ductile metals, such as certain low- carbon steels, change at low…
A: Ductility - ductility is mechanical properties which are used to described as a material amenability…
Q: Describe a situation in which the thermal conductivity of metals is of advantage and another where…
A: The rate at which heat is transported through a material is proportional to the negative of the…
Q: What is thermal gradient in thermal stress [explained thoroughly]
A: The temperature gradient is defined as the difference in temperature between two points over a body.…
Q: Give an example of Shear Flow in Built-Up Members?
A: Built-up members are defined as the members who are joined together by means of nails, bolts, and…
Analyze the effects of thermal stress?
Thermal stresses can be induced either by temperature gradients in mechanical components and engineering materials or by heating or cooling mechanical components and composite materials which contain at least two different materials or phases with different coefficients of thermal expansion.
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