Apparatus for determining the fatigue of samples subjected to thermomechanical cycling

摘要

In the apparatus for determining the fatigue of specimens which are subjected to a thermo-mechanical alternating stress, a sample (1) in a frame-shaped holder (2) between two parallel aligned legs (2.1) held firmly clamped at its two oppositely disposed end faces , At least one thermal actuator element (2.2), which consists of a material with a known coefficient of thermal expansion, is integrated into a frame part (2.3) interconnecting the legs (2.1) or arranged between a leg (2.1) and the sample (1). At least one sensor (3) acting on the frame-shaped holder (2) for determining forces acting between the sample (1) and the legs (2.1) due to the thermal expansion at changing temperatures, or the thermal expansion on the frame part ( 2.3), which occur as a result of changing temperatures, is formed, arranged or integrated in a cassette-shaped housing (6). The frame-shaped holder (s) (2) can be inserted into a cassette-shaped housing (6) with respectively attached sample (1). A device for changing the temperature within the cassette-shaped housing (6) is arranged in the cassette-shaped housing (6) and / or a device for changing the temperature can be connected to the cassette-shaped housing (6).