Mechanical Hysteresis

Equipment:

·     Torsion apparatus .

·     Torsion rod with different diameter and length made from (aluminum, stain less steel and copper)

·     Spring balance.

·     Digital Stopwatch.

·     Metallic base.

·     Metallic stand.

·     Metallic multi clamp.

Description

·     The relationship between torque and angle of rotation is determined when metal bars are twisted.

·     Record the hysteresis curve of steel and copper rods.

·     Record the stress-relaxation curve with various relaxation times of different materials