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The tem- perature was measured with a PtRh(10)/Pt thermocouple which was placed 2mm from the specimen surface. The load was applied by a spiral spring which was preloaded by a spindle. The compression of the spiral spring was measured by a linear potentiometer and the load of the specimen was calculated from the elongation with an accuracy of 1N. The strain of the specimen was calculated from the displacement of the load pads:two SiC scanning pins connected the upper load pad with the housing of an inductive strain gage which was placed under the specimen outside the furnace in the cold part of the testing machine. The displacement between the upper and the lower load pad was measured with a third scanning pin which connected the sensor of the strain gage with the lower load pad. |
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