A Laser Extensometer of the type P-100 is used for strain measurement at wood specimens. The system is integrated in the tensile tester and is started and stopped by the tensile tester automatically. A serial line is used to transfer the strain data.
The mounting of the extensometer allows a horizontal movement.
Thus the extensometer can be moved sidewards to change the specimen
and after that it can be moved back into the working position.
Materialprüfungsanstalt Universität Stuttgart
(MPA Stuttgart, Otto-Graf-Institut (FMPA))