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Happy – Unhappy Balls

Blanket design and Performance

Rubber Composites

Happy - Unhappy Balls

Happy – Unhappy Balls

Happy – Unhappy Balls: More flexible elastomers have higher hysteresis losses.

Happy - Unhappy Balls

The Happy Ball, with a springlike behaviour, has a hardness Shore A = 67º.
The highly damped Unhappy Ball has a hardness Shore A = 31º.