Theory and Design for Mechanical Measurements
6th Edition
ISBN: 9781118881279
Author: Richard S. Figliola, Donald E. Beasley
Publisher: WILEY
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Textbook Question
Chapter 4, Problem 4.53P
A random sample of 51 aircraft rivets is taken from a large batch and tested for shear strength. The mean value was 921.2 lbs with sx= 18.1. The batch is stated to have a mean strength on average of 925.0 lbs. Can we conclude that the batch mean shear strength is 925 lbs at a 95% confidence level?
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The following data were recorded during the tensile test of a test specimen with a
diameter of 12.8 mm. The gage length is 50.8 mm. The given data are as follow;
Given:
Test specimen material: Aluminum
Diameter of test specimen: Do = 12.8 mm
Length of test specimen: Lo = 50.8 mm
Force and Elongation data for test specimen
Assumptions:
1. The given data is accurate and the material is isotropic
2. The direction of applied force is parallel to the length of the cylinder
Requirement:
To interpret and plot the stress Vs Strain curve for a given specimen
DATA:
LENGTH, mm
STRESS, MPa
LOAD, N
0
50.8
7 330
50.851
15 100
50.902
23 100
50.952
30 400
51.003
34 400
51.054
38 400
51.308
41 300
51.816
44 800
52.832
46 200
53.848
47 300
54.864
47 500
55.88
36 100
56.896
44 800
57.658
42 600
58.42
36 400
59.182
STRAIN
The stress-strain data from a tensile test on a cast-iron specimen are
€ (10-3)
0
0.20
0.44
0.80
1.0
1.5
2.0
26
32
40
46
49
54
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
2.8
3.4
4.0
5.0
a (kpsi)
0
5
10
16
19
Determine the tangent modulus, E, at a value of a=0 psi.
106 psl.
The tangent modulus, Eis
X
Chapter 4 Solutions
Theory and Design for Mechanical Measurements
Ch. 4 - Prob. 4.1PCh. 4 - Prob. 4.2PCh. 4 - At a fixed operating setting, the pressure in a...Ch. 4 - Consider the toss of four coins. There are 24...Ch. 4 - As a game, slide a matchbook across a table,...Ch. 4 - Prob. 4.6PCh. 4 - A student conducts a lab exercise to calculate the...Ch. 4 - From a large database, the Highway Patrol...Ch. 4 - Prob. 4.9PCh. 4 - Prob. 4.10P
Ch. 4 - Prob. 4.11PCh. 4 - Prob. 4.12PCh. 4 - Prob. 4.13PCh. 4 - Prob. 4.14PCh. 4 - Prob. 4.15PCh. 4 - From 19 measurements of a pressure controller, the...Ch. 4 - From 19 measurements of a pressure controller, the...Ch. 4 - When the parameters of a population are known, the...Ch. 4 - A professor grades students on a normal curve. For...Ch. 4 - Prob. 4.20PCh. 4 - 4.21 An automotive manufacturer removes the...Ch. 4 - Prob. 4.22PCh. 4 - Prob. 4.23PCh. 4 - A sampling of 409 motor shafts from a very large...Ch. 4 - During the course of a motor test, the motor rpm...Ch. 4 - A baich of rivets is tested for shear strength. A...Ch. 4 - Three independent sets of data are collected front...Ch. 4 - Prob. 4.28PCh. 4 - 4.29 An engineer measures the diameter of 20 tubes...Ch. 4 - Prob. 4.30PCh. 4 - For Problems 4.30 through 4.36. itwould be helpful...Ch. 4 - For Problems 4.30 through 4.36. itwould be helpful...Ch. 4 - For Problems 4.30 through 4.36. itwould be helpful...Ch. 4 - Prob. 4.34PCh. 4 - Prob. 4.35PCh. 4 - Prob. 4.36PCh. 4 - A manufacturer of general aircraft dry vacuum...Ch. 4 - Strength tests made on a batch of cold-drawn steel...Ch. 4 - 4.39 Determine the one-sided 95 th-percentile of...Ch. 4 - 4.40 The manufacturer of an electrical fuse claims...Ch. 4 - How many independent random measurements of a...Ch. 4 - Based on 51 measurements of a time-dependent...Ch. 4 - 4.43 Estimate the probability with which an...Ch. 4 - Prob. 4.44PCh. 4 - Prob. 4.45PCh. 4 - Prob. 4.46PCh. 4 - Prob. 4.47PCh. 4 - 4.48 A cantilever is loaded at its tip. Tip...Ch. 4 - Prob. 4.49PCh. 4 - Prob. 4.50PCh. 4 - A transducer is used to indicate the pressure of a...Ch. 4 - An engineer takes water samples from 15 lakes in...Ch. 4 - A random sample of 51 aircraft rivets is taken...Ch. 4 - Prob. 4.54PCh. 4 - Estimate the p-value for N = 16. t = 1.798...
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