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192 Part III: Inspection and Test
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Figure 17.12
Torque can be calculated by multiplying the force applied to a lever by its distance
from the lever’s fulcrum.
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Part III.D.4
Figure 17.13 Compression test.
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Compression. Compression is the act of applying axially directed pushing forces
on a certain object, as shown in Figure 17.13. One example of such a functional
test is compression exerted on a concrete block to test the ability of that block to
withstand the pressure. Many concrete structures have compressive strengths in
excess of 50 MPa.
The compressive strength of a material is the value of uniaxial compressive
stress reached when the material fails completely.
4. HARDNESS TESTING
Classify and apply methods such as Brinell,
Rockwell, Durometer, and micro-hardness
test. (Application)
Body of Knowledge III.D.4