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

Importancia y uso:

5.1 The use of this apparatus is intended to induce property changes consistent with the end use conditions, including the effects of the UV portion of sunlight, moisture, and heat. Typically, these exposures would include moisture in the form of condensing humidity. Exposures are not intended to simulate the deterioration caused by localized weather phenomena, such as atmospheric pollution, biological attack, and saltwater exposure. Alternatively, the exposure may simulate the effects of sunlight through window glass. (Warning—Refer to Practice G151 for full cautionary guidance applicable to all laboratory weathering devices.)

5.2 This practice provides general procedures for operating fluorescent UV lamp weathering devices that allow for a wide range of exposure conditions. Therefore, no reference shall be made to results from the use of this practice unless accompanied by a report detailing the specific operating conditions in conformance with Section 10.

5.2.1 It is recommended that a similar material of known performance (a control) be exposed simultaneously with the test specimen to provide a standard for comparative purposes. Generally, two controls are recommended: one known to have poor durability and one known to have good durability. It is recommended that at least three replicates of each material evaluated be exposed in each test to allow for statistical evaluation of results.

5.2.2 Comparison of results obtained from specimens exposed in the same model of apparatus should not be made unless reproducibility has been established among devices for the material to be tested.

5.2.3 Comparison of results obtained from specimens exposed in different models of apparatus should not be made unless correlation has been established among devices for the material to be tested (see Guide D6631 for guidance).

Subcomité:

G03.03

Referida por:

F2286-16R23, F2157-09R24, D7613-17R23, F0883-13R22, D7281-07R21, F2957-13R19E01, F2286-16R23, D1047-21, G0224-23, D0925-14R19, D3105-17R24, D3451-24, E1797-12R17E01, G0147-17, D0904-99R21, D4434_D4434M-21, D7031-11R19, C1423-21, C1257-15R23, D7745-19, D2239-22, F0964-13R24, D4329-21, C1248-22, C1825-19, G0160-12R19, D6434-12R18, C1501-23, E1795-20A, F0520-21, D6754_D6754M-23, C1775-22, G0141-09R21, D4587-23, D8584-24, D4585_D4585M-18, D3794-22, C1523-17, C1519-10R22, D7238-20, D1248-16, D7897-18R23, F0883-13R22, D6577-24, D5894-21, E2925-19A, D6662-22, E2556_E2556M-10R22, D7052_D7052M-17R22, D0750-12R21, D4674-19, D2737-22, D5208-14R22, G0156-24, D1148-13R18, F2947_F2947M-21A, D4799_D4799M-17R23, F3390-20R24, C1184-23, C1382-16R23, E3006-20, C1442-14R21, C1315-19, F0790-23, C1916-21, D4811_D4811M-16R23, D5329-20, G0178-16R23, G0151-19, D7032-21, G0151-19

Volúmen:

14.04

Número ICS:

19.040 (Environmental testing)

Palabras clave:

accelerated; accelerated weathering; durability; exposure; fluorescent UV lamps; laboratory weathering; light; lightfastness; non-metallic materials; temperature; ultraviolet; weathering;