Thursday, September 25, 2008: 10:00 AM
Auditorium (Palazzo dei Congressi di Stresa)
During tensile testing of superelastic nitinol material the specimen warms up itself as result of the exotherm austenite-to-martensite transformation.
This increase in specimen temperature has great influence on the mechanical properties - in particular upper and lower plateau - and limits the strain rate of the tensile test.
A special setup of the tensile testing machine using a fan to remove the heat out of the specimen allows much more higher strain rates with also flat run of the upper and lower plateau.
A comparison study of tensile testing according to ASTM F 2516 vs. tensile testing with higher
strain rates with focus on upper and lower plateau values dependeding on Af temperature is done.
This increase in specimen temperature has great influence on the mechanical properties - in particular upper and lower plateau - and limits the strain rate of the tensile test.
A special setup of the tensile testing machine using a fan to remove the heat out of the specimen allows much more higher strain rates with also flat run of the upper and lower plateau.
A comparison study of tensile testing according to ASTM F 2516 vs. tensile testing with higher
strain rates with focus on upper and lower plateau values dependeding on Af temperature is done.