Published by Stellantis, a multinational automotive manufacturing company formed by the merger of the Italian-American Fiat Chrysler Automobiles and the French PSA Group, the “Stellantis MS.90179 Aging Accelerated (xenon) (Stellantis compliant)” standard describes test methods, test periods and acceptability limits for defining accelerated aging in organic materials to ultraviolet (UV) rays. All interior and exterior organic materials used in automotive applications are subject to this standard (fabrics, carpets, vinyls, plastics, thermoplastic elastomers, rubbers, coatings, films and similar materials).
As alternative outdoor applications to this standard, the “SAE J2527 Performance-based standard for accelerated exposure of automotive exterior materials using a controlled-beam xenon arc apparatus” and the “PSA D27 1389 Artificial aging of paint coatings, rubbers, and plastics by weather-ometer” standards are shown.
The standards shown in the tables given in the standard are based on the following:
As alternative interior applications to this standard, “SAE J2412 Accelerated exposure of automotive interior trim components using a controlled beam xenon arc apparatus” and “PSA D47 1431 Appearance behavior of materials and parts in the passenger compartment to artificial light at high and moderate temperatures” standards are shown.
The standards shown in the tables given in the standard are based on the following:
Accelerated xenon arc aging testing has become increasingly important for electronic products as many are frequently exposed to sunlight, heat and humidity. Therefore, this test method is in demand alongside existing stress tests against temperature and humidity, power cycling, electrical load, mechanical shock, vibration, corrosion, UV exposure and more to ensure long-term durability and performance.
Xenon aging testing is more than just UV testing. This testing method combines full-spectrum (ultraviolet + visible + infrared) solar simulation with heat and humidity. This enables a full environmental test instead of just ultraviolet.
Ultraviolet light initiates photo-induced degradation processes of polymers. Temperature directs the rate at which the chemical polymer degradation pathways are followed. Humidity contributes further to degradation by lowering the polymer glass transition temperature, which in turn affects the level of oxygen gas diffusion. In addition, hydrolysis reactions take place. Finally, water can also cause mechanical stress. This occurs through surface expansion during water uptake (rain or dew) and surface contractions when the surfaces dry again. In short, all three main wear factors work synergistically. Therefore, this method is recommended as a complete and realistic climatic stress test.
Having a good simulation of the worst case climatic stress condition for the product (worst case region or climate for the intended use) allows for maximum acceleration to be created compared to real time degradation through aging testing. Depending on the product and intended use, typical acceleration factors are 5-30 times faster than real time.
Our organization has a strong staff that closely follows the developments in the world in the field of science and technology and constantly improves itself. Among the numerous test, measurement, analysis and evaluation studies provided for businesses in various sectors, there are also test services in accordance with the "Stellantis MS.90179 Accelerated aging against aging (xenon) (Stellantis compatible)" standard.
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