Standard Practice for Operating Enclosed Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials

Importancia y uso:

5.1 The use of this apparatus is intended to induce property changes associated with the end use conditions, including the effects of sunlight, moisture, and heat. These exposures may include a means to introduce moisture to the test specimen. 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. Typically, these exposures would include moisture in the form of humidity.

Note 2: Caution: Refer to Practice G151 for full cautionary guidance applicable to all laboratory weathering devices.

5.2 Variation in results may be expected when operating conditions are varied within the accepted limits of this practice. 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. It is best practice to use control materials known to have relatively poor and 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.

Subcomité:

G03.03

Referida por:

D4363-22, D1047-21, F0852_F0852M-22, D3451-24, F1664-08R22, D6360-15R21, F0852_F0852M-22, D2219-21, G0147-17, D1499-13R21, F0668-17R22, G0141-09R21, D2220-21, D3794-22, D1248-16, B0882-24, D6577-24, D0750-12R21, D5031-23, G0156-24, D4313-22, F1665-08R22, C1530_C1530M-23, E2568-17A, D0429-14R23, G0155-21, G0178-16R23, G0151-19, E2513-07R19E01, G0151-19

Volúmen:

14.04

Número ICS:

19.040 (Environmental testing)

Palabras clave:

accelerated; accelerated weathering; carbon arc; durability; enclosed carbon arc; exposure; laboratory weathering; light; lightfastness; nonmetallic materials; temperature; ultraviolet; weathering;