Abstract: A flow test machine 2 which, for example, is able to be used for viscosity tests on plastics, comprises a test piston 4, a test channel 38, at least one test weight 72 and a drive unit 92. The test piston 4 is able to move through the test channel 38 by means of a weight force 79 of the test weight 72. The test weight 72 is able to be loaded by an actuating additional force 108, 108? by means of the drive unit 92 between a starting position 151 and an end position. The actuating additional force 108 enables a movement of the test piston 4 in the direction of the weight force 79, said movement being accelerated in comparison with an effect of the weight force 79. In a melt viscosity test, after a heating step, a thermoplastic plastic is pressed through a test channel 38 by a test piston 4. In a measurement preparation step and/or a cleaning step, the test mass is lowered along a weight force direction 79 under the influence of an actuating additional force 108, 108?.

Abstract: A flow test machine 2 which, for example, is able to be used for viscosity tests on plastics, comprises a test piston 4, a test channel 38, at least one test weight 72 and a drive unit 92. The test piston 4 is able to move through the test channel 38 by means of a weight force 79 of the test weight 72. The test weight 72 is able to be loaded by an actuating additional force 108, 108? by means of the drive unit 92 between a starting position 151 and an end position. The actuating additional force 108 enables a movement of the test piston 4 in the direction of the weight force 79, said movement being accelerated in comparison with an effect of the weight force 79. In a melt viscosity test, after a heating step, a thermoplastic plastic is pressed through a test channel 38 by a test piston 4. In a measurement preparation step and/or a cleaning step, the test mass is lowered along a weight force direction 79 under the influence of an actuating additional force 108, 108?.

Abstract: The device is used to perform component and material tests on samples, in particular compression tests and tensile tests on springs and elastic components, assemblies, and material samples. The device comprises two sample retainers (2.1, 2.2) arranged opposite each other, between which sample retainers a force for loading the sample (1) arranged therebetween can be generated, wherein one sample retainer (2.1) is fixed to a base frame (3) and the other sample retainer (2.2) is arranged on a movable adjusting element (4). Furthermore, the device is provided with a displacement recorder (6) that detects the travel of the sample retainer (2.2) by means of a displacement sensor (5) and a force transducer (7) that detects the force applied to the sample (1). The adjusting element (4) comprises a hollow-drilled spindle (8), which surrounds the displacement sensor (5) at a small distance and which is connected to the sample retainer (2.