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Standard / ASTM-G-154

ASTM G-154 -Standard Testing Instruments

Introduction

ASTM G154 provides the basis for direction of fluorescent UV (UVA) lamp apparatus for standard operation to simulate the effect of sunlight, moisture, and heat on nonmetallic materials, such as plastics, coatings, and polymers. It specifies the exposure cycles, irradiances, and condensation conditions for an accelerated simulation of outdoor degradation. Presto Group's UV Light Accelerated Weathering Tester can satisfy all ASTM G154 requirements, thereby avoiding any compromise in material durability and surface integrity evaluations.

Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials

The test method explains the operating procedures and basic principles for using water apparatus and fluorescent UV light proposed to reproduce various weathering effects that occur when products are exposed to sunlight, moisture, rain or dew, etc. This test method is meant especially for the procedures for obtaining, measuring, and controlling various conditions of exposure.

Significance

The importance of ASTM G154 is that a manufacturer has a laboratory method to simulate degradation by weathering in a controlled environment and make an assessment of it in a reproducible manner. The standard enables early identification of material limitations, such as color change, loss of gloss, and deterioration of the surface during product development, to provide informed selection of material and possible improvement of material formulation in plastics, coatings, and polymer industries under simulation of UV radiation, moisture, and thermal cycling.

Scope

ASTM G154 relates to non-metallic materials that are under accelerated weathering using a fluorescent UV lamp device. It controls the operation of the apparatus, lamp selection, exposure cycles, and parameters for condensation. Standard assists material developers, quality laboratories, and manufacturers in obtaining standardized, internationally accepted weathering performance data on plastics, coatings, and polymer product qualification for automotive applications, consumer goods, construction, and similar uses.

ASTM G-154 -Standard Testing Instruments

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