Instron CEAST 9340 - APPENDIX H - STRIKER ANTIREBOUND SYSTEM

Page 178 - CEAST 9340 - Instructions for Use and Maintenance 7510.000MN1r ed. 1 rev. 1
APPENDIX H - STRIKER ANTIREBOUND SYSTEM
TECHNICAL CHARACTERISTICS
The remarkable characteristics for the effective intervention of the striker antirebound
system are the followings:
• System intervention time: 130 ms.
• Minimum rebound height: 21 mm.
On the base of the characteristics above-mentioned, on the graph 1 is visualized the
minimum “Residual Energy [%]” of the striker after impact, versus the striker “Drop Height
[m]”, so that the system is able to avoid the rebound (second impact on the specimen).
The curve represented is
independent from the mass of the striker.
Example: striker released from 150 mm:
• If the residual energy after impact is 15 %, the antirebound system
stops the striker
avoiding the rebound;
• If the residual energy after impact is 10 %, the antirebound system
does not stop
the striker.
Graph 1
Residual energy [%]
Drop height [m]
Minimum allowed Residual energy versus Drop height
0
10
20
30
40
50
60
70
80
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0