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CVEN207
7/20/17
Lab 7 Exercise: Beam Bending Under 3-Point Loading
Bend testing (also flexural testing) is commonly performed to measure the flexural strength and
modulus of all types of materials and products. Here we apply the load perpendicular to the
longitudinal axis of the specimen to compare beams of different x-sectional geometries. This is
important because for a given application one must choose a material and a beam geometry
such that it does not bend significantly when supporting the loads required for the application.
This experiment uses a universal testing machine and a three point bend fixture to bend the beam
and acquire load vs. deflection data needed to calculate the properties of the beam.
Load (N)
Position (mm)
y
h
Z
b
Test Procedure:
1. Produce beams of diff...