EBK MANUFACTURING PROCESSES FOR ENGINEE
6th Edition
ISBN: 9780134425115
Author: Schmid
Publisher: YUZU
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Chapter 2, Problem 2.11Q
To determine
The toughest material between two different materials whether the value of k and n is sufficient or not and also explain the value of k and n is not sufficient than find the addition information needed.
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A tensile force of 200 KN is applied on a 0.02-m diameter and.2-m long rod. After applying the load, the diameter of the rod decreases to 0.01998 m and the length increases to 2.01 m. Assuming no permanent deformation occurs in that material, the modulus of elasticity (GPa) is?
(a)
Two different materials designated A, and B, are tested in tension using test specimens
having diameters of 0.505 cm and gage lengths of 2.0 cm (Figure 1). At failure, the
distances between the gauge length marks are 2.13 cm (sample A) and 2.48 cm (sample
B). Also, at the failure cross-sections, the diameters are found to be 0.484 cm (sample A)
and 0.398 cm (sample B), respectively.
Classify each material as brittle or ductile using your judgement.
Based on the stress-strain plots, which materials tested are stiff and which are tough? How can you tell the difference?
* we tested (Steel HR250)and (Aluminium 5251)in this experiment
Chapter 2 Solutions
EBK MANUFACTURING PROCESSES FOR ENGINEE
Ch. 2 - Prob. 2.1QCh. 2 - Prob. 2.2QCh. 2 - Prob. 2.3QCh. 2 - Prob. 2.4QCh. 2 - Prob. 2.5QCh. 2 - Prob. 2.6QCh. 2 - Prob. 2.7QCh. 2 - Prob. 2.8QCh. 2 - Prob. 2.9QCh. 2 - Prob. 2.10Q
Ch. 2 - Prob. 2.11QCh. 2 - Prob. 2.12QCh. 2 - Prob. 2.13QCh. 2 - Prob. 2.14QCh. 2 - Prob. 2.15QCh. 2 - Prob. 2.16QCh. 2 - Prob. 2.17QCh. 2 - Prob. 2.18QCh. 2 - Prob. 2.19QCh. 2 - Prob. 2.20QCh. 2 - Prob. 2.21QCh. 2 - Prob. 2.22QCh. 2 - Prob. 2.23QCh. 2 - Prob. 2.24QCh. 2 - Prob. 2.25QCh. 2 - Prob. 2.26QCh. 2 - Prob. 2.27QCh. 2 - Prob. 2.28QCh. 2 - Prob. 2.29QCh. 2 - Prob. 2.30QCh. 2 - Prob. 2.31QCh. 2 - Prob. 2.32QCh. 2 - Prob. 2.33QCh. 2 - Prob. 2.34QCh. 2 - Prob. 2.35QCh. 2 - Prob. 2.36QCh. 2 - Prob. 2.37QCh. 2 - Prob. 2.38QCh. 2 - Prob. 2.39QCh. 2 - Prob. 2.40QCh. 2 - Prob. 2.41QCh. 2 - Prob. 2.42QCh. 2 - Prob. 2.43QCh. 2 - Prob. 2.44QCh. 2 - Prob. 2.45QCh. 2 - Prob. 2.46QCh. 2 - Prob. 2.47QCh. 2 - Prob. 2.48QCh. 2 - Prob. 2.49PCh. 2 - Prob. 2.50PCh. 2 - Prob. 2.51PCh. 2 - Prob. 2.52PCh. 2 - Prob. 2.53PCh. 2 - Prob. 2.54PCh. 2 - Prob. 2.55PCh. 2 - Prob. 2.56PCh. 2 - Prob. 2.57PCh. 2 - Prob. 2.58PCh. 2 - Prob. 2.59PCh. 2 - Prob. 2.60PCh. 2 - Prob. 2.61PCh. 2 - Prob. 2.62PCh. 2 - Prob. 2.63PCh. 2 - Prob. 2.64PCh. 2 - Prob. 2.65PCh. 2 - Prob. 2.66PCh. 2 - Prob. 2.67PCh. 2 - Prob. 2.68PCh. 2 - Prob. 2.69PCh. 2 - Prob. 2.70PCh. 2 - Prob. 2.71PCh. 2 - Prob. 2.72PCh. 2 - Prob. 2.73PCh. 2 - Prob. 2.74PCh. 2 - Prob. 2.75PCh. 2 - Prob. 2.76PCh. 2 - Prob. 2.78PCh. 2 - Prob. 2.79PCh. 2 - Prob. 2.80PCh. 2 - Prob. 2.81PCh. 2 - Prob. 2.82PCh. 2 - Prob. 2.83PCh. 2 - Prob. 2.84PCh. 2 - Prob. 2.85PCh. 2 - Prob. 2.86PCh. 2 - Prob. 2.87PCh. 2 - Prob. 2.88PCh. 2 - Prob. 2.89PCh. 2 - Prob. 2.90PCh. 2 - Prob. 2.91PCh. 2 - Prob. 2.92PCh. 2 - Prob. 2.93PCh. 2 - Prob. 2.94PCh. 2 - Prob. 2.95PCh. 2 - Prob. 2.96PCh. 2 - Prob. 2.97PCh. 2 - Prob. 2.98PCh. 2 - Prob. 2.99PCh. 2 - Prob. 2.100PCh. 2 - Prob. 2.101P
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- (a) Two different materials designated A, and B, are tested in tension using test specimens having diameters of 0.505 cm and gage lengths of 2.0 cm (Figure 1). At failure, the distances between the gauge length marks are 2.13 cm (sample A) and 2.48 cm (sample B). Also, at the failure cross-sections, the diameters are found to be 0.484 cm (sample A) and 0.398 cm (sample B), respectively. i. Calculate the percent elongation and percent of area reduction in each specimen. a. Sample A b. Sample Barrow_forwardDraw the stress-strain diagram and mark the regions. How can you use stress-strain diagrams in selecting the most appropriate material for an orthopedic biomaterial?arrow_forwardA 0.013 m diameter, 0.5 m long cylindrical metal bar is subjected to a compressive force of 8,500 N. This load does not exceed the yield strength of the material. Determine its diameter under this load. You will need some of the following properties of the metal to solve the problem: modulus of elasticity = 207 GPa, Poisson’s ratio = 0.30, yield strength = 180 MPa, tensile strength = 380 MPa, ductility = 23% elongation.arrow_forward
- Please explain how to determine if a material is ductile or brittle from the stress-strain diagramarrow_forwardTable Q1 consists of 4 (four) materials with their mechanical properties. The length of a cylindrical rod 380 mm long, having a diameter of 10.0 mm, is to be subjected to a tensile load of 24,500 N. (a) Calculate the stress of the cylindrical rod. (b) Compare with data given in Table Q1 which are the likely materials for the cylindrical rod if it does not experience plastic deformation? Justify. (c) What is the likely material if the elongation is less than 0.9 materials? Justify. Table Q1 Modulus of Elasticity, Yield Strength and Tensile Strength Material Modulus of Yield Tensile Strength Strength Elasticity (GPa) (MPa) (MPa) Aluminum 70 255 420 alloy Brass alloy 100 345 420 Copper 110 250 290 Steel alloy 207 450 550arrow_forward4. The maximum stress a human tendon can withstand is estimated to be 1200 MPa. If you were to test it for rupture what load cell you should use (25ON or 5kN) what problems may occur if you select an incorrect load cell. 5. The figure below is a J-shaped (or concave upward) stress-strain curve. What does a J-shaped stress stain curve indicate about a material's response to stress and tendency to yield? Name two materials that have J-shaped stress strain curves.arrow_forward
- A titanium tube with an outside diameter of 25 mm and inside diameter of 20 mm and a length of 200 mm. When an elastic uniaxial tensile force of 30 kN is applied to this tube along its length, what is the final length of that tube? (Modulus of elasticity of Titanium is 105 GPa)arrow_forwardMECHANICAL PROPERTIES OF MATERIALS (stress and tensile stress) Does the electrical tape with the highest load mean that that material has the greatest ultimate or tensile strength? Why or why not?arrow_forwardA tensile force of 100 kN is applied on a 0.02-m diameter and 2-m long rod. After applying the load, the diameter of the rod decreases to 0.01998 m and the length increases to 2.01 m. The engineering axial strain is?arrow_forward
- Explain the different experimental methods that would relate stress with strain to determine the stress-strain diagram for a specific material. Atleast 2 paragraphs or 300words.arrow_forward1. Determine which listed material below is the best candidate for a cylindrical rod of 200mm and having a diameter 20.0mm and subject to a tensile load of 55000N. The cylindrical rod should not experience plastic deformation or diameter reduction of 0.015mm. Justify your answer. Material Modulus of Elasticity (GPa) 140 Yield Strength (MPa) Poisson's Ratio 0.33 0.34 0.30 0.34 A 400 202 600 414 800 1300 214arrow_forwardDraw 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 regionarrow_forward
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