How does the resilience of this material compare to its toughness?
Q: A. Which parameters are used for passage from real multi-axial stress condition to one-axial…
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Which material/metal is the stiffest based on the following data provided and why?
A: Concept: 1) Stiffness is ability of material to resist deformation against applied load. 2) For the…
Q: What is the measure of the stiffness of a volume of material?
A: What is the measures the stiffness of volume of material..??
Q: Q1. Which one statement most accurately describes the relative strength and toughness for materials…
A:
Q: How can you determine the modulus of elasticity and the modulus of rigidity of the material?
A: The expression to determine the modulus of elasticity is, Here, Y is the modulus of the elasticity…
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 are the distinguishing differences between elasticity, plasticity, and fracture?
A: There are the following differences between elasticity, plasticity and fracture. Elasticity:- It is…
Q: Define the hardness of a metal and how is the hardness of a material determined by a hardness…
A: Hardnesss :- Hardness is defined as the ability of the material to resist deformation under the…
Q: Explain how composition and structure of materials influence the properties of the parent material…
A: Structural properties of materials In contrast to their electronic, magnetic, chemical, or optical…
Q: sticity?
A: given: What is modulus of elasticity?
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: What are the units and equations for determining yield strength?
A: The yield strength of a material can be determine using a tensile test. The final results of the…
Q: Is the bulk modulus a measure of the stiffness of a volume of materials?
A: The bulk modulus of a material is the ratio of volumetric stress to volumetric strain.…
Q: How does the stress/strain graph of a brittle material compare to a ductile material?
A: When a material is given to an external load, initially it experiences elastic deformation the…
Q: Having stress-strain relationship of ductile materials in your mind, highlight the differences…
A: When an amount of repeated load act on an material then the factor of safety at the yield strength…
Q: How did temperature affect the toughness of C1045-CF, Cast Iron, and AL7075-T6
A: Ductility: The property of a metal by virtue if which it can be transformed into thin wires by the…
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: 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: Which of the four major material groups has the lowest thermal conductivity?
A: The four major material groups are :Metals, Non metallic organics, organics and polymers. Among…
Q: How are the Normal and Shear Stress Components used?
A: Normal stress is defined as stress which induced due to the outside force acting normally on a…
Q: What is true stress and true strain?
A: To define: True stress True strain Stress: It is defined as the internal resistance developed at a…
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: You have been given the following test sample data following mechanical testing of 15 test pieces of…
A: GIVEN: TO FIND:
Q: What is the Theory of Elasticity?
A: Elasticity is a property of a material to deform under the action of external force and regain its…
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: How stress and strain relate to elastic deformation?
A: Given: stress and strain To determine: How stress and strain relate to elastic deformation
Q: For the same bar, if the engineering strains are 0.05 and 0.10 at engineering stresses of 200 and…
A: Given data: σ1=200 MPaσ2=220 MPae1=0.05e2=0.1
Q: What is the relation between modulus of elasticity and modulus of rigidity.
A: Modulus of Elasticity:- The slope of stress-strain curve under direct loading is called Modulus of…
Q: What are the three equations of flexural rigidity?
A: Flexural Rigidity It defined as the resistance offered by structure while undergoing bending or it…
Q: Q12. How would a creep profile on a brittle material looks like?
A: How would be creep profile on a brittle material.
Q: What are Brittle materials?
A: Brittle Material is a material that has no ductility. brittle material cannot resist the tension…
Q: What is the equivalent stiffness?
A:
Q: How is Equation used to determine the shear modulus of elasticity of a material?
A: It can be used to explain how a material resists transverse deformations but this is practical for…
Q: What is the definition of fracture toughness?
A: given; what is the definition of fracture ??
Q: 1-What is hardness and what is the benefit of calculating it? 2- Classify the materials that have…
A:
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: Define the term Modulus of Toughness?
A: Toughness is the property due to which the material can withstand impact loading without fracture…
Q: How do you think about the importance of the theory of elasticity and plasticity?
A: Elasticity - It is defined as the property of material which allow the material to regain its…
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: Define the modulus of elasticity?
A: modulus of elasticity is a property of a material.
Q: If a sample has a high modulus of elasticity, will the material exhibit a high degree of elasticity…
A: Yes , high value of modulus of elasticity means that material will exhibit high degree of…
Q: What is the modulus of rigidity?
A: Modulus of rigidity
Q: What is the difference between elasticity and plasticity? Define each
A: Every engineering structure is subjected to external loading of various kinds (normal load, shear…
How does the resilience of this material compare to its toughness?
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- If material A is observed to have twice the modulus of rigidity but the same Poisson's ratio and yield shear stress than that of material B, then which of the following comparisons is always true? Select one: Material A can resist higher normal stresses than material B can before permanent normal deformations occur. O b For the same load that brings the materials to plastic behavior, material A will experience larger permanent shear deformations than material B. Material A can resist higher shear stresses than material B before permanent shear deformations occur. O d. Material B is has a lower ultimate stress than material A.1. What are the elastic modulus (E) and the Poisson's ratio () used to indicate? 2. Illustrate the differences between actual stress and engineered stress with strain, and also describe their underlying physical concepts. 3. If the engineering strain is 2% for a specific state of uniaxial stress, what is the real strain? Please solve for all in full detail and step by stepDraw two schematic graphs using pencil showing a typical stress-strain curve for aluminum. The first graph should show engineering stress vs engineering strain, and the second graph should show true stress vs true strain. Label the showing: (i) elastic modulus (ii) proportional limit (iii) yield stress (iv)yield strain (v) fracture stress (vi) fracture strain on each graph. You may showboth graphs on one plot. Explain the difference between engineering stress and true stress.
- 6. A ceramic part for a jet engine has a yield strength of 648 MPa and a plane strain fracture toughness of 8.49 MPam 4. To be sure that the part does not fail, we plan to ensure that the maximum applied stress is only one-third of the yield strength. We use a nondestructive test that will detect any internal flaws greater than 0.27 mm long. Assuming that the Y constant is 1.4, does our nondestructive test have the required sensitivity? Explain.At higher temperature, strength and strain hardening are increased, whereas, ductility is decreased which permits greater plastic .deformation True O False O .The strength constant (C) is increased with increasing of temperature True O False O The metal is becoming weaker as strain increases, this is because of .strain hardening (work hardening) property نقطة واحدة True O False O The engineering stress and strain are defined relative to the .instantaneous area and length of test specimen True O False aaly ihi In sheetmetal working processes, the surface area-to-volume ratio of .w.p. is low True O False ialy ihii Determine the value of the strain-hardening exponent for a metal that will cause the average flow stress to be 70% of the final flow stress after .deformation 0.444 0.421 0.422 0.428 aals i For pure copper (annealed), the strength coefficient = 330 MPa and strain-hardening exponent = 0.52 in the flow curve equation. Determine the average flow stress that the metal experiences…Example: - In a tensile test of a cylindrical specimen with an initial diameter of 12 mm, the loads at 15 and 25% engineering strain are recorded to be 3 and 3.3 kN, respectively. If the flow curve of the above specimen is represented by the Hollomon parabolic stress-strain relation, neglect elastic strain and calculate the following (a) % Uniform elongation, (b) UTS. (c) 0.2% Offset yield strength. (d) ) % Uniform reduction of area and (ii) % uniform true reduction of area. (e) True toughness in the plastic range up to the point of tensile instability.
- QUESTION ONE (a) Distinguish between physical and mechanical properties of materials. Give two examples of each. (b) Explain why in a stress versus strain curve, the plastic portion of the graph after necking tends to drop (ie the force drops) despite that the tension is increasing. (c) A tensile test uses a copper test specimen that has a gauge length of 80 mm and a di.ameter of 16 mm. During the test, the specimen yields under a load of 9,600 N. The corresponding gauge length is 80.24 mm. The maximum load reached is 148,000 N at a gauge length of 94.2 mm, while fracture happens at a load of 12,800 N and a gauge length of 102 6 mm Determine the following: (i) Modulus of elasticity E (ii) Yield strength Oy (iii) Fracture strength, ơt (iv) Tensile strength OTs. 1Draw a typical stress vs strain tensile test curve for the following materials (two seperate graphs) and label the axis. A ductile metallic test specimen that is stretched to failure displaying a characteristic yield point and show the following parts on the curve. 1- Yield point 2- Ultimate Tensile Strength 3- Breaking point 4- Elastic Region 5- Plastic Region 6- Necking regionA steel specimen 12mm diameter has gauge length 50mm. the steel specimen had tested via tensile test under maximum load 66KN with elongation 7.5mm, and the yield load of this specimen is 15KN with elongation 2.4mm. Calculate: 1- The engineering ultimate stress (ultimate tensile strength), and engineering strain at this point. 2- The engineering stress and strain at yield point. 3- The modulus of elasticity, and the modulus of resilience. 4- The final or fracture strain of a steel specimen, if you know that the final length of specimen after testing is 58.5mm. 5- The true stress and strain for ultimate point. any four point sir
- A three-point transverse bending test is conducted on a cylindrical specimen of a ceramic material that has a reported flexural strength of 595 MPa. If the specimen diameter is 6.8 mm and the support point separation distance is 43 mm, what is the maximum load (in N) that may be applied before the specimen fractures? i N(a) A core sample having length to diameter ratio of 2.5 experienced a strain of 0.94 after being stretched. If the core had an initial length of 8 cm and was able to withstand a load of 500 N before breaking, calculate: The resulting length before failure The tensile strength (b) If the core sample above is subjected to a uniaxial compression test resulting in load, axial deformation and circumferential deformation of 350 N, 1.5 and 0.47 respectively at failure, calculate: The uniaxial compressive strength, σc The Young’s modulus, E The Poisson’s ratio,μBriefly comment on the values obtained for the Elastic Modulus, Yield Strength, Ultimate Strength and Toughness of the test specimen as compared to values of various comparable materials found in the literature. Is the test material comparatively strong? Is it stiff? Is it tough? Yield strength is 186Mpa, elastic modulus is 44.8GPa And the ultimate strength is 238.7mpa