The tests simulate extreme heat and weathering conditions through oven aging and artificial weathering
It is clear that common accelerated artificial weathering
methods can lead to the wrong conclusion, especially when going to the most durable paint systems.
The results of colour measurement show different effects of the various wood species and irradiation dosages during an artificial weathering
The printed labels are exposed to artificial weathering
, tape removal and abrasion resistance tests to ensure they are capable of withstanding the harshest environments and prove their durability.
Effect of Artificial Weathering
on the Wood Impregnated with Nano-Zinc Oxide.
This was the case both for the specimens exposed to the heat ageing and those subjected to the artificial weathering
The exposure duration of a few hundred hours of artificial weathering
still left the materials within the induction time; the actual main loss in properties like gloss and haze retention only occurs at about 3000 hr of artificial weathering
16-18) Here, for the first time, TL measurements were used to detect damages in various well-defined automotive coatings after artificial weathering
at the earliest stage of degradation, dependent upon specific sample parameters like matrices, hardeners, and stabilizers.
Patent Number 6,626,052, "Method and Apparatus for Artificial Weathering
," was assigned to two NIST scientists on Sept.
Types of testing Two basic test methods are available: long-term, real-time testing outdoors; and accelerated and artificial weathering
, both indoors and outdoors.
Lightness, indeed, show how light/dark is the surface and there for it gives the immediate information on how much the samples are degraded by artificial weathering
Three main concepts that address the goal of reducing the duration of artificial weathering
tests can be differentiated: