DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 11, Problem 2RQ
Why must destructive testing be performed on a statistical basis?
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The 150-lb skater passes point A with a speed of 6 ft/s.
(Figure 1)
Determine his speed when he reaches point B. Neglect friction.
Determine the normal force exerted on him by the track at this point.
25 ft
B
= 4x
A
20 ft
x
A virtual experiment is designed to determine the effect of friction on the timing and speed
of packages being delivered to a conveyor belt and the normal force applied to the tube.
A package is held and then let go at the edge of a circular shaped tube of radius R = 5m.
The particle at the bottom will transfer to the conveyor belt, as shown below.
Run the simulations for μ = 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 and determine the time and speed at
which the package is delivered to the conveyor belt. In addition, determine the maximum
normal force and its location along the path as measured by angle 0.
Submit in hardcopy form:
(0) Free Body Diagram, equations underneath, derivations
(a) Your MATLAB mfile
(b) A table listing the values in 5 columns:
μ, T (time of transfer), V (speed of transfer), 0 (angle of max N), Nmax (max N)
(c) Based on your results, explain in one sentence what you think will happen to the
package if the friction is increased even further, e.g. μ = 0.8.
NOTE: The ODE is…
Patm = 1 bar
Piston
m = 50 kg
5 g of Air
T₁ = 600 K
P₁ = 3 bar
Stops
A 9.75 x 10-3 m²
FIGURE P3.88
Chapter 11 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 11 - What is the purpose of nondestructive examination...Ch. 11 - Why must destructive testing be performed on a...Ch. 11 - Prob. 3RQCh. 11 - What quality�related features can a hardness...Ch. 11 - Prob. 5RQCh. 11 - What are some possible objectives of...Ch. 11 - What are some factors that should be considered...Ch. 11 - How might the costs of nondestructive testing...Ch. 11 - Prob. 9RQCh. 11 - Prob. 10RQ
Ch. 11 - Prob. 11RQCh. 11 - Describe the sequence of activity in a liquid...Ch. 11 - What types of defects can be detected in a liquid...Ch. 11 - What is the basic principle of magnetic particle...Ch. 11 - Magnetic particle inspection is limited to the...Ch. 11 - Prob. 16RQCh. 11 - What is the major limitation of sonic testing,...Ch. 11 - Prob. 18RQCh. 11 - Prob. 19RQCh. 11 - What are three types of ultrasonic inspection...Ch. 11 - Prob. 21RQCh. 11 - What types of radiation can be used in...Ch. 11 - Prob. 23RQCh. 11 - What are penetrameters, and how are they used in...Ch. 11 - Although radiographs offer a graphic image that...Ch. 11 - Prob. 26RQCh. 11 - Prob. 27RQCh. 11 - What types of detection capabilities are offered...Ch. 11 - Prob. 29RQCh. 11 - Prob. 30RQCh. 11 - Prob. 31RQCh. 11 - How can temperature be used to reveal defects?Ch. 11 - Prob. 33RQCh. 11 - What are some of the ways to evaluate strains...Ch. 11 - What kinds of product features can be evaluated by...Ch. 11 - What type of information can be obtained through...Ch. 11 - What are some of the techniques that can be used...Ch. 11 - Why is it necessary to determine the distinction...Ch. 11 - A manufacturing company routinely specifies...Ch. 11 - For each of the inspection methods listed, cite...Ch. 11 - Prob. 3PCh. 11 - Prob. 4PCh. 11 - Prob. 5PCh. 11 - Prob. 6PCh. 11 - The pulse�echo ultrasonic technique can be used...Ch. 11 - If V for a particular metal is 5000 m/sec and a...Ch. 11 - With nondestructive inspection methods using wave...Ch. 11 - Your overall container is restricted to the size...Ch. 11 - If additional funds could be provided to upgrade...
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