Standard Practice for Operating Xenon Arc Lamp Apparatus for Exposure of Materials

Importancia y uso:

5.1 The apparatus exposes specimens to light, heat, and optionally moisture, often to attempt to replicate specimen property changes observed in outdoor and indoor end-use environments. Exposures are not intended to simulate the deterioration caused by localized weather phenomena, such as atmospheric pollution, biological attack, and saltwater exposure.

5.2 This practice allows a wide range of exposure conditions that may produce significantly different results. Therefore, no reference shall be made to results from its use unless accompanied by a report in conformance with Section 10 detailing the specific operating conditions.

5.2.1 A control (a similar material of known performance) should be exposed simultaneously with the test specimen to provide a reference for comparative purposes. It is best practice to use two different control materials: one known to have relatively poor durability and one known to have relatively good durability. At least three replicates of each test specimen and control material should be exposed concurrently to permit statistical evaluation of results.

5.3 Comparison of results obtained from specimens exposed in different apparatus (even if the apparatus is the same model) using the identical setpoints and operational controls should not be made unless reproducibility has been established between apparatus for the material to be tested.

5.4 Refer to Practice G151 for cautionary guidance applicable to all laboratory weathering apparatus.

5.5 It is recommended that users follow good laboratory practices in order to reduce variability in exposures (1).8

Subcomité:

G03.03

Referida por:

D4956-19, F2947_F2947M-25, F0852_F0852M-22, D3105-17R24, D3451-24, D2513-25, D3667-16R22, F0852_F0852M-22, D8257_D8257M-22, D4637_D4637M-15R21E01, D2219-21, D0904-99R21, D4434_D4434M-21, C1257-15R23, D2737-25, C1248-22, G0160-12R19, E2141-21, C1501-23, D3903-15R22, D4956-19, D6434-25, D4303-10R22, D3771-15R22, F0668-17R22, C1900-24, F1043-18R22, G0147-24, D6551_D6551M-05R25, D6754_D6754M-23, F3123-22, D1248-25, D4459-21, G0141-09R21, D2220-21, D8584-24, D3794-22, C1519-10R22, D7613-17R23, C1483_C1483M-17R22, D4355_D4355M-21, D6878_D6878M-21, F2623-25, D0925-14R25, D6662-22, D4798_D4798M-11R21, C1523-25, D0750-12R21, D1148-13R18, D7356_D7356M-19, F3390-20R24, D8514_D8514M-23, C1184-23, C1382-16R23, D8330-20, D7106_D7106M-25, D2239-25, D3841-21, C1442-14R21, D6577-24A, C1916-21, D2565-23, E3119-19, D6695-24, C1530_C1530M-23, D7465_D7465M-15R23, D7869-17R25, F1515-21, D6901-15R21, E2568-17A, D1047-21, D3424-25, D4811_D4811M-16R23, E0744-07R22, D5329-20, D7942-15R23, D5071-06R21, G0178-16R23, G0156-24, G0151-19, E2785-25A, G0151-19

Volúmen:

14.04

Número ICS:

19.040 (Environmental testing)

Palabras clave:

accelerated; accelerated weathering; durability; exposure; laboratory weathering; light; lightfastness; materials; temperature; ultraviolet; weathering; xenon arc;