Dse:
Use the
grip of 110mm long clamping surface the handle of racket, the
distance from grip
edge to racket top is 520mm. Place the
oval frame with supports of 8mm radius.
Then
introduce the deadweight (6.9kg for tennis racket, 3kg for
badminton racket) to one side of
the frame, observe its deflection after one minute. Or clamp the
frame in two supports at the position of 110mm distance to the
top of frame. Then
introduce deadweight to the torsional beam on the handle grip.
Calculate the
coefficient of torsion and twisting angle to compare torsional
property of
material.
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