The percentage elongation of the metal-stress , Mechanical Engineering

Question 1

A metal rod has a diameter of 8.74 mm and supports a load of 24.6 kN. Calculate the value of true stress on the rod. The diameter was measured with the load already applied. Information for questions 2 to 5:

1978_load 1.png

Question 2

In relation to the arrowed regions in which of the load-elongation curves above is the region in which work (strain) hardening occurs, most accurately depicted? Answer (1), (2), (3), (4), (5) or 'None of them'.

Question 3

In relation to the arrowed regions in which of the load-elongation curves is the region in which plastic instability or necking occurs, most accurately depicted? Answer (1), (2), (3), (4), (5) or 'None of them'.

Question 4

In relation to the arrowed regions in which of the load-elongation curves is the region where yielding occurs most accurately depicted? Answer (1), (2), (3), (4), (5) or 'None of them'.

Question 5

In relation to the arrowed regions in which of the load-elongation curves is the region where plastic deformation occurs most accurately depicted? Answer (1), (2), (3), (4), (5) or 'None of them'.

Information for questions 6 to 11:

1036_load_elongation.png

A tensile test on a specimen having an initial diameter of 13.11 mm and an initial gauge length of 200.0 mm, gave the following data:

Plot the data in suitable graphical form and determine the values in questions 6 to 11. It is suggested to plot a separate graph to have an exaggerated 'Elongation' axis, so that the first part of the deformation process can be enlarged and accurate values can be obtained.

Also it may not be possible to calculate all of the values requested. If you think a value cannot be calculated, you should answer, 'Not possible to calculate this value'.

Question 6

What is the modulus of elasticity of the material?

Question 7

What is the limit of proportionality for the material?

Question 8

What is the proof strength of the material?

Question 9

What is the percentage reduction of area of the material?

Question 10

What is the tensile strength of the material?

Question 11

What is the true stress at maximum load for the material?

Information for questions 12 and 13:

A tensile test of a metal specimen, with an initial diameter of 9.90 mm and an initial gauge length of 65.0 mm, gave the following data in the initial stages of the test.

Question 12

What is the percentage elongation of the metal?

Question 13

What is the true stress at fracture for the metal?

Posted Date: 3/2/2013 4:46:55 AM | Location : United States







Related Discussions:- The percentage elongation of the metal-stress , Assignment Help, Ask Question on The percentage elongation of the metal-stress , Get Answer, Expert's Help, The percentage elongation of the metal-stress Discussions

Write discussion on The percentage elongation of the metal-stress
Your posts are moderated
Related Questions
Compute the force exerted by the tires on the road: An automobile of mass 1500 kg traverses a 500 m curve at a constant speed of 50 kmph. Supposing no banking of the curve,

Q. Show Hazard assessment of plant operation? Using the hazard assessment of each plant operation will help establish the layout or orientation of process units within the plan

Incompletely Constrained Motion: While a connection among the elements, building a pair is such that the constrained motion is not done by itself, but by some other means. Such a

Evaluation of heat Required: Heat which is required to generate steam is different from 'total heat' or enthalpy of steam. Heat required for generating steam means heat needed

What do you mean by sensitivity in a governor?

MANUFACTURING PROCESS A manufacturing process is the activity (or a combination of activities) of transforming a given material into a product of different forms and sizes and

Q. What is Boiler feedwater? The boiler feedwater will be a mixture of desalinated water, treated make-up water and returned condensate, deaerated and heated, supplied by other

Define the Application of Abrasive Jet Cutting Machines Cleaning purpose. Cutting fine lines. Machining semiconductors. Drilling and cutting thin section of har

Calculate Drilling Speed and Machining Time Calculate the drilling speed if a 50 mm dia hole of 60 mm depth is to be drilled in a M.S. component. The feed rate is 0.2652 and M

Define O.R. and what are the applications in Industry ? A firm uses lathe, milling and Grinding machine to make two machine parts. The table below show the machining time requir