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Silke Schindler
Management of environmental simulation, Leipzig
Specialist Color Matching / Environmental simulation

Mail: silke.schindler@remove-this.gwp.eu
+49 341 392981 61

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Dr. Stefan Loibl
Graduate Chemist
Expert for Analytics and Composites

Mail: stefan.loibl@remove-this.gwp.eu
+49 8106 9941 65

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Leistungsverzeichnis

Environmental simulation and electronics

Environmental simulation and electronics

The standards DIN EN 60068 et seq. & LV124 define general requirements, test conditions and tests for electrical and electronic components and assemblies in motor vehicles. GWP supports you in carrying out various tests from this range of standards. Many OEM manufacturers have developed manufacturer-specific test specifications from the general standards. Examples are:

  • VW 80000: 2017-10
  • Daimler/ Mercedes LV 124-2 & MBN 10306: 2020-06
  • Scania TB1900: 2013-10
  • BMW GS95024-3-1: 2019-08

Among others, GWP is glad to assist you with the following accredited tests:

M-01 Free fall

This test simulates the free fall of a component to the ground, as it can occur during the entire process chain up to the intended installation of the component. It serves to ensure that a component which is visibly undamaged during a free fall and therefore installed in the vehicle does not show any hidden damage or previous damage, e.g. internal component detachments or cracks. The component is dropped from a height of 1 m onto a concrete floor.

M-02 Stone impact test

This test simulates the mechanical stress on the component caused by stone chips. It is used to ensure the resistance of the component to failure patterns such as deformation and cracks. The test is carried out in accordance with DIN EN ISO 20567-1: 2017-07 procedure B. GWP uses an Erichsen Multigrit 508 VDA device for this purpose. Fixtures for mounting your test specimens are manufactured by the GWP workshop.

K-01 High temperature storage / Low temperature storage

This test simulates the thermal stress of the component during storage and transport. It serves to prove the resistance to storage at high (Tmax) or low temperatures (Tmin), e.g. during transport of the component (aircraft or shipping container). If the test is carried out at the beginning of a test sequence, it also serves to equalise all components to the same initial conditions. The test is carried out in climatic chambers and temperature chambers of the GWP.

K-02 Step temperature test

This test simulates the operation of the component at different ambient temperatures. It is used to safeguard the component against malfunctions that may occur within a small interval of the ambient temperature range, as well as the start-up behaviour of the assemblies over the complete ambient temperature range.

K-03 Low temperature operation

This test simulates the stress on the components at low temperatures. It serves to ensure the function of the component after a long parking time or driving time at extremely low temperatures. The test is carried out according to DIN EN 60068-2-1: 2008-01 procedure Ab.

K-04 Re-painting temperature

This test simulates the stress on the component during repainting. It serves to safeguard the component with regard to thermally induced defect patterns, such as cracking in soldered, glued, bonded and welded joints and on seals and housings.

K-05 Thermal shock (component)

This test simulates the thermal stress on the component caused by shock-like temperature changes during vehicle operation. It serves to safeguard the component with regard to thermally induced defect patterns, e.g. crack formation in soldered, glued, bonded and welded joints and on seals and housings. The test is carried out according to DIN EN 60068-2-14: 2010-04 Test Na.

K-06 Salt spray test with operation, outdoor area

This test simulates the stress on the component in a salty atmosphere and salty water, as can occur in certain regions of the world and in winter road conditions. It serves to protect the assembly against malfunctions under salt load, e.g. due to short circuits and leakage currents caused by salt penetrating the component. The test is carried out according to DIN EN 60068-2-11: 2000-02.

K-08 Damp heat, cyclic

This test simulates the thermal stress on the assembly due to cyclical temperature changes at high humidity during vehicle operation. It serves to ensure the resistance of the component to damp heat. The test is carried out according to DIN EN 60068-2-30: 2006-06.

K-07 Salt spray test with operation, interior

This test simulates the stress on the component in a salty atmosphere as it can occur in certain regions of the world. It serves to protect the component against malfunctions under salt load, such as short circuits and leakage currents due to salt penetration into the components. The test is carried out according to DIN EN 60068-2-11: 2000-02.

K-09 Humid Heat, Cyclic (with Frost)

This test simulates the thermal stress (including freezing) of the component due to cyclic temperature change at high humidity during vehicle operation. It serves to ensure the resistance of the assemblies to moist heat. The test is carried out in accordance with DIN EN 60068-2-38: 2010-06.

K-14 a Damp heat constant - severity level 1

This test simulates the exposure of the component to damp heat. It serves to ensure the resistance of the assembly with regard to defect patterns caused by moist heat, such as corrosion, migration/dendrite growth, swelling and degradation of plastics, seals and potting compounds. The test is carried out in accordance with DIN EN 60068-2-78: 2014-02 with test severity level 1.

K-14 b Damp heat constant - severity level 2

This test simulates the stress on the component caused by damp heat during the service life of the vehicle. It is used to ensure the quality and reliability of the assembly with regard to defect patterns caused by damp heat, such as corrosion, migration/dendrite growth, swelling and degradation of plastics, seals and potting compounds. The test is performed in accordance with DIN EN 60068-2-78: 2014-02 with test severity level 2. The test duration is based on the Lawson model for estimating the service life of the assembly.

K-15 b Climatic test for components with watertight enclosures

This test simulates, in a condensed manner, the exposure of the component to moist heat, taking into account the protective effect of waterproof enclosures during the life of the vehicle. It serves to ensure the quality and reliability of the component with regard to defect patterns caused by moist heat, such as corrosion, migration/dendrite growth, swelling and degradation of plastics, sealing and potting compounds. The test is performed as a combination test with test blocks according to DIN EN 60068-2-78: 2014-02 and DIN EN 60068-2-38: 2010-06.

K-16 Thermal shock (without enclosure)

This test does not simulate real stress. Rather, it serves to find weak points in the area of mechanical connections on assemblies such as solder joints or plug connections. The test is to be carried out exclusively with the component assembly without housing and mechanical parts. Necessary brackets are to be designed in such a way that no additional mechanical stresses act on the assembly. The test shall be carried out in accordance with DIN EN 60068-2-14: 2010-04.

C-01 Chemical tests

This test simulates the exposure of the component to various chemicals. It serves to protect the component against chemical changes to the enclosure and impairment of the function due to chemical reactions. The media resistance test is carried out according to ISO 16750-5: 2010-04.

P-01 Parameter test (function test)

This functional test evaluates certain key parameters at a specified temperature at the voltages UB min , UB and UB max. The active test duration is kept as short as possible in order not to increase the component temperature unnecessarily. The basic functionalities of the components are measured.

P-02 Parameter test (small)

This functional test evaluates key parameters and the functional behaviour of the components at room temperature and operating voltage. In addition, the components are visually inspected according to DIN EN 13018: 2016-06 for external damage and changes, such as cracks, chipping, discolouration and deformation, without opening the components. Furthermore, a shake test is performed to identify loose parts inside the component. Changes in the values of key parameters, functional behaviour or fault memory entries as well as abnormalities in the visual inspection are evaluated in comparison to the new condition.

P-03 Parameter test (large)

The functional test evaluates key parameters and the functional behaviour of the components at maximum, minimum and room temperature, each at minimum, maximum and operating voltage. In addition, a leak test is carried out at room temperature. Furthermore, the components are inspected visually for external damage and changes, such as cracks, chipping, discolouration and deformation, without opening the components, in accordance with DIN EN 13018: 2016-06. Furthermore, a shake test is performed to identify loose parts inside the component. Changes in the values of the key parameters, the functional behaviour or the fault memory entries as well as abnormalities in the visual inspection are evaluated in comparison to the new condition.

Society for Materials Testing
Ensuring quality | Accompanying development | Analyzing damage | Passing on knowledge

GWP Gesellschaft für Werkstoffprüfung mbH
Georg-Wimmer-Ring 25
85604 Zorneding/München
Germany

Tel. +49 8106 994110
Fax +49 8106 994111
www.gwp.eu

Handelsregister München
HRB 53245
USt.-IdNr. DE131179893

General Manager
Dr. Julius Nickl