PURPOSE: To demonstrate the variation in tensile strength with wire diameter.
DESCRIPTION: Two wires are used: 24 AWG, 0.474 mm diameter, and 20 AWG, 0.786 mm diameter. The ratio of tension required to break two wires is proportional to the square of their diameters, for this case F2 / F1 = 2.75. The two wires can be br oken, the required tensions read off the attached spring scale, and the ratio calculated.
REFERENCES: (PIRA 1R20.10)
EQUIPMENT: Wire tester with wire, as photographed.
SETUP TIME: None.
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