6) Would ceramic materials or metallic materials would have better creep resistance? Briefly explain why?:

Q: Do fatigue striations have the same interpretation in polymers as in metals?

A: In polymers, the fatigue load model is quite complicated as discontinuous growth of crack has been…

Q: Discuss the importance of creep deformation at ambienttemperature for ceramics. How does it compare…

A: Creep in solids subjected to high stress, and temperature is one of the imperative subjects within…

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: Convider the following data for a range of materials. In which of the following sifuation is range…

A: Creep failure can be defined as the permanent deformation of a material when subjected to a constant…

Q: Which materials, behave in the opposite way? Give some examples?

A: The behavior of the material is categorized based on specific characteristics like conduction of…

Q: The fracture strength of glass may be increased by etching away a thin surface layer. It is believed…

A:

Q: Why is it very important to use stress concentration factors for the design of members made of…

A:

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: Explain the damage occurs for composite material with different expansion coefficients.

A: A composite material is a combination of different layers of different materials all reinforced…

Q: Define the term bulk modulus?

A:

Q: ( 4) Cite the reasons why ceramic materials are, in general, harder yet more brittle than metals.

A: The structure of ceramics material is polycrystalline in nature. So, the ceramics materials are…

Q: What is section property? Give its formula?

A: Section property: It is also known as section modulus (Z). It is the proportion of moment of inertia…

Q: When choosing a polymer for fatigue crack propagation resistance, would you typically select an…

A: Semi molecular polymers have more endurance limit in crack propagation. One explanation is the…

Q: How would you know if there were different creep mechanisms acting at different temperatures?

A: Creep: When a part of any member  is subjected to constant stress at high temperature for a long…

Q: The specific surface energy for aluminum oxide is 0.90 N/m, and the elastic modulus is 393 GPa. The…

A:

Q: . Stainless steels I. Refractory metals (containing elements of high melting point, like Nb, Mo, W,…

A: Refractory materials and superalloys are material resilient to creep.

Q: Define the term Stiffness? of materials?

A: Stiffness: Stiffness is a property of material due to which an object resists deformation when an…

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: Explain  creep and also explain its importance.

A: Creep

Q: Does the failure of materials occur due to creep and fatigue?

A: Creep: When a part of any member  is subjected to constant stress at high temperature for a long…

Q: B/ what are the mechanisms for creep?

A: As per given  Mechanism of creep??

Q: Explain what the meaning of strain hardening is, how it happens in the materials. Do you think…

A: Strain hardening or work hardening: When a metal is deformed beyond the yield point but less than…

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: The maximum principal strain failure criterion is appropriate for ceramic materials". Is this true…

A: As we know that Ceramic is a brittle material

Q: Sketch an engineering stress-strain diagram for ceramics, metals and polymers indicating the level…

A: Draw the engineering stress-strain diagram for ceramics, metals and polymers.

Q: ank the materials from highest to lowest of which has the best thermal shock resistance without…

A: Thermal shock resistance refers to a material's capacity to withstand quick and abrupt…

Q: Glass ceramics have low coefficients of thermal expansion. State why this is the  case (hint;…

A: given; Glass ceramics have low coefficients of thermal expansion. State why this is the case (hint;…

Q: Compare the differences between hot and cold rolled steel in terms of their processing and…

A: COLD Rolled Hot Rolled  done  below recrystallization temperature, done above recrystallisation…

Q: Illustrate the shear stress vs shear strain relationship of the following materials: Ethanol, juice…

A: The shear stress vs shear strain relationship of some materials is given below- Ethanol, Glycerin-…

Q: Give some examples of brittle materials?

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

Q: Time dependent permanent deformation is called Select one: O a. Plastic deformation O b. Creep O c.…

A: Given data: Time dependent permanent deformation=?

Q: When materials are in service for long periods of time, why does the considerations of creep become…

A: Creep is the natural tendency of a material to gradually move or permanently deform as a result of…

Q: What is Poisson's ratio ? why do you think is it lower for ceramics and higher for polymers compared…

A: Poisson's ratio is the ratio of transverse strain to the axial strain.ϑ=-εtransεaxial

Q: What is the impact of fracture toughness on materials? 2) Why do we control corrosion?

A: What is the impact of fracture toughness on materials? Fracture intensity is an important factor in…

Q: Define a homogeneous material?

A: Homogenous material is the material defined as the uniform composition throughout the material. The…

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: List 3 of the design methods that can be applied to avoid the occurrence of fatigue

A: Fatigue is the beginning and spread of fractures in a material as a result of cyclic stress,…

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: (4) Cite the reasons why ceramic materials are, in general, harder yet more brittle than metals.

A: 4) The answer lies in the ''crystal structure'' of the materials. The bond across grain…

Q: State at what homologous temperature creep may start to become an issue for metals and for ceramics.…

A: The homologous temperature can be defined as the ratio of the temperature given at the instant to…

Q: Based on these results, which material would be better to use for constructing an…

A:

Q: Consider the following data for a range of materials. In which of the following situations is creep…

A: Creep is defined as deformation which a component undergoes if it is subjected to continuous load at…

Q: Differentiate between ductile and brittle fracture in materials. Discuss the importance of ductile…

A: Difference Between Ductile and Brittle Fracture in Materials Ductile Fracture Brittle Fracture…

Q: If the constraint for a design requires a minimum stiffness of E-100 GPa and the design objective is…

A: given data- minimum stiffness required = 100 GPa objective- to maximize the material index M= E/ρ

Q: Is it very important to use stress concentration factors for the design of members made of brittle…

A: Stress concentration factors for the design of members made of brittle materials;

The Space Lattice and Unit Cells

Every matter consists of atoms, molecules, and ions. If these atoms, molecules, and ions (micro-particles) are represented in a three-dimensional space-occupying certain specific points in space, then these arrangements are termed as space lattices and the specific points which are being occupied by atoms, molecules and ions are termed as lattice points. The atoms, molecules, and ions at the lattice points are generally grouped in a regular fashion and repeat periodically at the three-dimensional space.