Flexure Test Prelab

pdf

School

Iowa State University *

*We aren’t endorsed by this school

Course

327

Subject

Electrical Engineering

Date

Dec 6, 2023

Type

pdf

Pages

1

Report

Uploaded by ElderEnergyMouse25

EM 327 Mechanics of Materials Laboratory Flexure Test Prelab Section 8 Group 1 Date: 10/24/2023 Members: Sebastian Bujak FT-P-1 1 Please study the lab manual carefully and thoroughly before answering the following questions: 1. (2 pts) Which of the two orientations for testing the wood specimens in this lab will be able to carry larger load and why? 2. (3 pts) Continuing from Question 1, do you expect the values of Young’s modulus E and proportional limit pl determined in this lab to be different from those obtained in compression test? If so, how different and why? 3. (4 pts) For the three-point bending test set up in this lab, what would be the shear force and moment distributions along the beam axis? Draw necessary illustrations and explain. 4. (6 pts) What are the types of failure modes that could occur in the wood specimens? Total 15 points Answers: 1. The strongest orientation of the wood should be when it is placed on its side vertically. I would expect this to be true because there is much more stability when placed vertically and less likely to snap. 2. I would expect the values of Youngs Modulus and the proportional limit to decrease in this lab in comparison to the compression test lab, because in this lab the load is being applied against the grain making the specimen much weaker. 3. 4. 5. Tension failure, Shear failure, Compression failure.
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