Q2) Describe how fatigue test data can be used in the design of components.
Q: Give THREE (3) reasons why hardness tests are performed more frequently than any other mechanical…
A:
Q: Describe the maximum shear stress theory of failure.
A: It is required to describe maximum shear stress theory of failure
Q: Based on the following specification (Figure: 12), state whether the measured component would be…
A:
Q: It has been said that 80% of the failures of machine parts have been due to A) Fatigue B)…
A: In machines, most of the parts are loaded in cyclic nature due to cyclic loading on the spindle or…
Q: What are the benefits of adopting these standards by an industrial organization?
A: Benefits of adopting standards by an industrial organization are: Less wastage. Globally recognized…
Q: Describe the six most common tests used to identify material properties
A: Most common tests used to identify material properties:-
Q: What is mechanical efficiency?
A: Mechanical efficiency is the ratio of work obtained from any machine to the energy supplied to the…
Q: ow cost of investment for breakdown maintenance which after the occurrence of an advanced considered…
A: Yes, It is true.
Q: Discuss a case study where the mechanical hazard caused an accident, determining: - the cause of…
A: Given Mechanical hazard To find Cause of accident Consequences of accident Safety measures
Q: The magnitude of the modulus of elasticity is a measure of the resistance to separation of adjacent…
A: Answers (1) T (2) F (3) T
Q: Explain the Coefficient of Performance?
A: Coefficient of performance (COP): It is the ratio of the desired energy to input work. The desired…
Q: Materials creep significantly in extremely cold weather True or false
A:
Q: 1. Please select the effects of vibration * Human discomfort Increase strain rate Structure buckling…
A: Vibration: Any unwanted to-and-fro motion of the body about its equilibrium position is known as…
Q: Q1. A. For tensile test, there are two data are calculated or determined to ensure the validity of…
A: Tensile test is used to find out how strong a material is and also how much it can be stretched…
Q: Name 2 Failure Criteria that are not suitable for ductile materials?
A: Theories of failure: The theory that helps to determine the safe dimensions of the required object…
Q: Search for a case of an aerospace component failure, describe and explain the cause of failure and…
A: Case Study of the Component Failure
Q: Search for a case of an aerospace component failure, describe the cause of failure and the steps…
A: One of the example is the space shuttle columbia disaster, which killed indian orign astronaut…
Q: process of measuring the vibration.
A: 1 It is very essential to consider the effects of vibration of land-driven vehicles on the human…
Q: Tension is the common test for determining the strength-deformation characteristics using a. bending…
A: Tension test or tensile test is done on an specimen to determine the ultimate tensile strength,…
Q: Thermal Analysis - Material Characterisation State the 3 criteria that must be met to qualify a…
A:
Q: Having stress-strain relationship of ductile materials in your mind, highlight the differences…
A:
Q: Discuss any case study where the mechanical hazard caused an accident, determining: - the cause of…
A: (1) ANSWER : Some threats are obvious, while others appear to be hidden. It is critical for safety…
Q: 16.) What factors do not affect a mechanical testing? a) Temperature b) Increase in number of axes…
A: What factors do not affect a mechanical testing? a) Temperature b) Increase in number of axes for…
Q: Metal work: What are possible sources of error in trying to obtain a specific hardness or strength?
A:
Q: Q5. a) Write a note on 'Types of failure models'. b) Explain about maintenance monitoring, execution…
A: a. Corporate failure models can be broadly divided into two groups: quantitative models, which are…
Q: A technician measured the hardness of the steel bar two times. For the first time, he measured the…
A: (a) No, hardness will be changed in both the cases.
Q: engineering science explain how the application of scientific method impacts upon different test…
A:
Q: What is the maximum load that can be applied in our Universal Testing Machine located in Engineering…
A: A machine used to examine the elongation or contraction of the material under pulling and pushing…
Q: Place a check on the space corresponding to the observed physical properties. Metal brittle…
A: Magnesium denoted as Mg, is a lustrous metal, it is a malleable, soft, and ductile metal. Since it…
Q: Minor load for Rockwell hardness test is same for all different scales, is it true? True False
A: Minor load for all scale of rockwell hardness test is 10 kg or 98.1 kgf.
Q: 1- Different types of material categories. 2- Example of an engineering product from each category.…
A: 1.Different types of material categories. 2- Example of an engineering product from each category.…
Q: Q 4: A graphical illustration of break-even analysis alo
A: We are suppose to solve only one question. Please post other question as a separate question.
Q: Explain how test results influence material selection for a given application.
A: how Test results influence material selection for a given application....
Q: what is the Rockwell hardness test
A: The rockwell hardness test is a technique of measuring the hardness of materials. The rockwell…
Q: QUESTION 4 Which of the following statements is true about the relative magnitudes of the design…
A: Correct answer: a. The factor of safety is greater than or equal to the design factor.
Q: When can a theory of failure be used as a basis for design?
A: For designing any structure or the member the theory of failure is used.
Q: What are the benefits of adopting these standards by an industrial organization?
A: Standards provide people and organizations with a basis for mutual understanding, and are used as…
Q: 1. Explain the any one Engineering disaster contributed by mechanical failure and describe the…
A: The failure of the Quebec Bridge is one of major engineering disaster contributed by mechanical…
Q: What is the stimulus applied on the material to measure its mechanical property?*
A: A vast variety of tests covering two categories that can be separated broadly: Those who attempt to…
Q: In paragraph form, what is the value of knowing and understanding the various codes and standards…
A: given; In paragraph form, what is the value of knowing and understanding the various codes and…
Q: What causes the thermal expansion of material
A: Thermal expansion refers to the tendency of matter to change form, area, length, and density in…
Q: Find an example of an actual product failure. Explain why did it occur? b) What are the major…
A: The state or circumstance of a product failing to satisfy its intended aim or people's…
Q: The failure of a material under varying load, after a number of cycles of such load, is known as (a)…
A: Option d is correct.
Q: Discuss a case study where the mechanical hazard caused an accident, determining: - the cause of…
A: The incident discussed here is the one in which smoke entered the working space and due to that 2…
please solve it all to give you the like
Step by step
Solved in 3 steps
- a . Sketch stress strain curve if the result shown in table represent the force and extension happened in steel, and show Mechanical properties that we get from tensile test on curve? (10p)Note : Lo=80 mm , Do=10 mm , use excel to plot the curve ExtensionLoad(mm) (N)0 0.900.83 4694.341.67 4831.412.50 4781.083.33 4918.834.17 4926.585.00 5257.075.83 5437.016.66 5575.888.33 5775.189.16 5847.5210.83 5965.4111.67 6010.5312.50 6042.5713.33 6072.2614.16 6092.9315.00 6113.2416.67 6140.3617.50 6146.3718.33 6148.1419.16 6149.1725.00 5940.2125.83 5675.3326.67 4725.52b. What is meant by modulus of rigidity? if it increases what does happen to material? (2p)hings The following results were obtained during a tensile test to destruction on a mild steel test piece of diameter 15.96mm and 80mm gauge length Extension for a load of 40KN = 0.08mm Maximum load applied during test = 93kN Diameter at fracture = 12.85mm %3D Final length between gauge points 106mm From these results, determine: i) The modulus of elasticity for mild steel ii) The tensile strength iii) Percentage of elongation iv) Percentage of reduction in areaMild steel 1 Young;s modulus 1219.5 Yield strain and stress (0.4101,500.08) Failure stress and strain :not able to find because the given data shows the experiment did not reach the failure point. if the material stress and strain does not reach a failure point ,what dose it means , does it means that the material is more stronger?
- For the stress-strain curves below, which statements are correct? Stress (MPa) 60 50 40 30 20 10 0 a. 0 b. O c. e. f. A 1 2 The mechanical behavior shown in C is that of an elastomer with low elastic modulus Polymer B and C have an elastic behavior whereas A has a plastic behavior While the deformation in polymer A is fully reversible until breakage, polymer B and C only display reversible deformation until 0.1X and 5x elongations respectively Od. The polymer with brittle nature is the one that possesses the highest elastic modulus The mechanical behavior shown in B is that of an elastomer with low elasticity The polymer with the necking behavior has the highest strength B с 3 4 5 6 7 8 StrainProject 3: Table 4 shows the fatigue data of a ductile cast iron to be used for an automobile axle that rotates at an average rotational speed of 750 revolutions per minute: Tuble 4: Fuligue dula of u duclile cust iron Stress Amplitude (МPa) Cycles to Failure 248 1 X 105 236 ЗX 105 224 1X 106 ЗX 106 1 X 107 3 X 107 1 X 108 3 X 108 213 201 193 193 193 a) Make an S-N plot (stress amplitude versus logarithm cycles to failure). b) What is the fatigue limit for this alloy? c) Determine the fatigue lifetimes at stress amplitudes of 230 MPa and 175 MPa? d) Discuss your results.A 11 in. inner diameter, 0.35 " wall thickness pipe is under a pressure of 2.5 ksi where strain gages installed along axial and circumferential directions register strains of 180 and 900 micro-strains (x10^-6), respectively. A) What is the Poisson's Ratio of this material and it's Elastic Modulus? B) In a uniaxial test, the pipe's material is observed to yield at a longitudinal strain of 0.1 in/in. Assuming a factor of safety of 2, the pipe can withstand impact energy of _______ lb - in per foot without suffering permanent deformation. C) If the pipe is depressurized and then subjected to a torque of 50 lblb - ft.ft., it will experience a shear strain of ________ rad.
- A 11 in. inner diameter, 0.35 " wall thickness pipe is under a pressure of 2.5 ksi where strain gages installed along axial and circumferential directions register strains of 180 and 900 micro-strains (x10^-6), respectively. A) What is the Poisson's Ratio of this material and it's Elastic Modulus? B) In a uniaxial test, the pipe's material is observed to yield at a longitudinal strain of 0.1 in/in.in/in. Assuming a factor of safety of 2, the pipe can withstand impact energy of _______ lblb - in.in. per foot without suffering permanent deformation. C) If the pipe is depressurized and then subjected to a torque of 50 lblb - ft.ft., it will experience a shear strain of ________ rad.A Copper specimen of circular cross-section is subjected to a tensile test. The data obtainedare:Length of Specimen = 329 mm;Diameter of Specimen = 39 mm;Load at Yield Point = 130 kN;Maximum Load = 219 kN;Load at fracture = 118kNDetermine the following:1) Find initial area of the test specimen2) Yield Stress3) Ultimate Stress4) Fracture stress5) Find the strain for 0.058mm elongation.6) Mark Yield stress, Ultimate stress and Fracture stress on a Stress-Strain diagram.Table B2: Stress-strain data for uniaxial compression test on Sample Normal stress Uniaxial strain (%) Lateral strain (%) (MPa) 0.0 0.0000 0.0000 5.0 0.0319 -0.0150 10.0 0.0720 -0.0275 15.0 0.1025 -0.0425 20.0 0.1450 -0.0600 25.0 0.1755 -0.0725 30.0 0.2150 -0.0875 35.0 0.2455 -0.1025 41.0 0.2815 -0.1125 46.0 0.3125 -0.1209 52.0 0.3515 -0.1285 58.0 0.4000 -0.1325 (f) Based on the plotted curve, calculate the average/tangent Young's modulus and Poisson's ratio for this sample, at 50 % UCS?
- Question 3: The fatigue curve for a steel alloy is given below. a) Does the material exhibit to have endurance limit? If yes, what is the endurance limit? b) Determine fatigue life at a stress amplitude of 255 MPa. c) Estimate fatigue strength at 4.5 x 10 log cycles. Stress amplitude (MPa) 500 450 400 350 300 250 T 3 5 6 Log cycles to failure 7 8 9Figure 1 shows the tensile testing results for different materials. All specimens have an initial diameter of 12 mm and an initial gauge length of 50 mm. 300 250 Low carbon steel Network polymer 200 Crystalline polymer 150 Amorphous polymer 100 50 5 10 15 20 25 30 Strain (%) Figure 1: Stress-strain curve b. Determine the following parameters for each material: • the tensile strength the 0.2% offset yield strength the modulus of elasticity • the ductility Stress (MPa) LO5. The following data were collected from a standard 0.505-in.-diameter test specimen of a copper alloy (initial length lo= 2.0 in.). After fracture, the total length was 3.014 in. and the diameter was 0.374 in. Load (Ib) Al (in.) 00000 3,000 6,000 0.00167 0.00333 7,500 0.00417 9,000 10,500 0.0090 0.040 12,000 0.26 12,400 11,400 0.50 (maximum load) 1.02 (fracture) a) Plot the data as engineering stress versus engineering strain. b) Compute the modulus of elasticity. c) Determine the yield strength at a strain offset of 0.002. d) Determine the tensile strength of this alloy. e) What is the approximate ductility, in percent elongation? f) Compute the modulus of resilience. g) Compute from the data and plot true stress versus true strain diagram.