Document Library

Abstract For decades, automotive coatings have experienced degradation in the form of etching on coatings exposed to acid rain. As a result, procedures were developed to simulate and accelerate this type of degradation. These procedures failed t...

AbstractMany attempts have been made in the past to develop a test that can predict the acid etch resistance of automotive clearcoats. Methods such as the Gradient Bar and Acid Spot are just two examples of the numerous laboratory methods used in ind...

Conclusions From This Study The within-chamber uniformity of degradation for the Atlas rotating drum speci - men mounting systems tested varied from ±3% to ±13% - depending on the type of material and exposure conditions.The uniformity for the Q...

AbstractThis paper investigates whether xenon arc testers with a flat specimen array can provide results which are functionally equivalent to the results of the old-style rotating drum testers. Ultimately, the validity of performance-based standards ...

How two different hardware configurations can be used to simulate the same test environment AbstractIn recent years, almost all major weathering test procedures have been modified from hardware-based to performance-based. These newer test method...

Testing for Light Stability in Retail & Residential EnvironmentsAbstract Indoor products may be subjected to a wide range of interior lighting environments. These environments include residential incandescent, commercial fluorescent, and ind...

IntroductionThe use of properly purified water is critical to running a weathering or corrosion test device. There are two reasons for this. First, impurities in water can leave deposits on test specimens, thus spoiling the opportunity to evaluate th...

Your exposure application determines which type of UV lamps should be used. All of the QUV ® accelerated weathering tester's lamps emit mainly ultraviolet rather than visible or infrared light. All are electrically equivalent to an ordinary 40-watt f...

UVA-340 Lamp Test ResultsReference Fedor, G. R., and Brennan, P. J., "Comparison Between Natural Wathering and Fluorescent UV Exposures: UVA-340 Lamp Test Results," Durability Testing of Non-Metallic Materials, ASTM STP 1294, Robert J. Herling, ...