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Approval-relevant multiaxial fatigue strength test as a service load follow-up test (BLNV). Required for the approval of a trailer coupling device (AHV) on the European market. Also known colloquially as the CARLOS TC (CAR LOading Standard Trailer Coupling) test and was developed by manufacturers, the TÜV and the Frauenhofer Institute.The realistic load application of the vertical, longitudinal and transverse forces on the AHV is carried out using a triaxial servo-hydraulic test rig. This ensures reproducible laboratory conditions. The test can be carried out on all typical AHV types (fixed, removable, swivelling, bolt, combination with electrical control). The exact type of test is not defined in detail in the standard, so that depending on the target group (vehicle or component manufacturer) the test can be carried out on an entire vehicle or only on the AHV assembly (incl. cross member).

Test to evaluate the durability of materials against UV exposure. This involves exposing material samples to artificial sunlight in order to simulate and evaluate the ageing effects of sunlight. This serves to assess the long-term resistance of materials to UV light, particularly with regard to colour changes and other possible material degradation.

Evaluation of resistance to mechanical stress in various environments by exposure to broadband noise-shaped vibrations. The test applies controlled vibrations with specific frequencies and amplitudes to simulate real conditions, such as transport or operational vibrations.

Evaluation of resistance to mechanical stress in different environments by exposing to sinusoidal vibrations. The test applies controlled vibrations with specific frequencies and amplitudes to simulate real conditions, such as transport or operational vibrations.

Cyclic climate change test (heat/cold cycle) for testing vehicle components. Simulation of environmental influences on components to identify optimisation potential: For example, exposing vehicle components to extreme Temperatures to evaluate performance, durability and material integrity. Or simulation of increased humidity to assess the effects on corrosion resistance and electrical systems.

Part 2: Condensation (in-cabinet exposure with heated water reservoir). Determination of resistance to moisture. Part 2: Condensation (in-cabinet exposure with heated water reservoir). The purpose of the test is to determine how well a material can withstand high humidity, which can potentially lead to problems such as corrosion, swelling or deterioration. Typically, samples of the material are exposed to a controlled humidity environment for a specified period of time. The level of humidity and duration of exposure may vary depending on the requirements of the test. After the exposure period, the samples are examined for visible changes such as blistering, cracking or discolouration.