A sample of crosslinked polvisoprene rubber undergoes a constant strain rate axial tension experiment The initial sample measurements are 3.60 cm gauge length (axial direction); 0.b2 cm wide; 0.1/ cm thick:
A sample of crosslinked polvisoprene rubber undergoes a constant strain rate axial tension experiment The initial sample measurements are 3.60 cm gauge length (axial direction); 0.b2 cm wide; 0.1/ cm thick:
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A sample of crosslinked polvisoprene rubber undergoes a constant strain rate axial tension experiment
The initial sample measurements are 3.60 cm gauge length (axial direction); 0.b2 cm wide; 0.1/ cm thick:
Transcribed Image Text:Force (Newtons)
0
Length (cm)
3.60
0.33
3.64
0.61
3.67
0.98
3.72
1.22
3.75
1.63
3.79
2.05
3.84
[[
2.51
3.89
2.30
3.93
2.32
3.99
2.48
4.09
2.62
4.15
2.96
4.25
4.25 (break)
A. Convert the data into stress vs. strain and plot the data on a graph using spreadsheet software. Determine the
elastic modulus, yield stress, ultimate stress, and elongation at break for this material.
(use engineering values, which use the initial sample dimensions for cross-sectional area)
B. the maximum elongation where the polymer does not deform (yield elongation)
C. If you know that the elastic (Young's) modulus for polyisoprene is approximately 54 MPa
in its glassy state, what can you surmise about the temperature of the test done here?
D. List two things you could change about the material (or experimental conditions) to increase
the elastic modulus.
E. List two different things you could change about the material (or experimental conditions) to
decrease the modulus. (i.e. do not include the opposite of your answer to part D).
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