A strip of elastomer was stretched in tension and elongation was held constant. After 10 min the tensile stress in the specimen dropped by 12%. Assuming that the elastomer behaves in accordance with the Maxwell model: • calculate the relaxation time (to the nearest whole number) (answer: τ = 78 min) • show that it takes 22 min for the stress to drop to 75% of its initial value.
A strip of elastomer was stretched in tension and elongation was held constant. After 10 min the tensile stress in the specimen dropped by 12%. Assuming that the elastomer behaves in accordance with the Maxwell model: • calculate the relaxation time (to the nearest whole number) (answer: τ = 78 min) • show that it takes 22 min for the stress to drop to 75% of its initial value.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A strip of elastomer was stretched in tension and elongation was held constant. After 10
min the tensile stress in the specimen dropped by 12%. Assuming that the elastomer behaves
in accordance with the Maxwell model:
• calculate the relaxation time (to the nearest whole number) (answer: τ = 78 min)
• show that it takes 22 min for the stress to drop to 75% of its initial value.
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