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ASTM G154標(biāo)準(zhǔn)簡介

    ASTM G-154測試方法是使用熒光紫外燈和冷凝裝置進(jìn)行曝露測試的基本原則和操作程序，旨在再現(xiàn)材料曝露在陽光下(直接或透過窗玻璃)和曝露在濕氣中(雨水或露水)發(fā)生的老化效果。 這種做法限制于獲取測量和控制的條件和曝光程序的方法，不能指定最適合要測試的材料的曝光條件。

符合ASTM G154測試標(biāo)準(zhǔn)的儀器設(shè)備有以下：

紫外線試驗箱	紫外線老化試驗機(jī)	紫外線耐候試驗箱

ASTM G154 測試標(biāo)準(zhǔn)英文原文如下：

Designation: ASTM G154 – 05 a Standard Practice forOperating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials1

This standard is issued under the fixed designation ASTM G154; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This practice covers the basic principles and operating procedures for using xenon arc light and water apparatus intended to reproduce the weathering effects that occur when materials are exposed to sunlight (either direct or through window glass) and moisture as rain or dew in actual use. This practice is limited to the procedures for obtaining, measuring and controlling conditions of exposure. A number of exposure procedures are listed in an appendix; however, this practice does not specify the exposure conditions best suited for the material to be tested.

NOTE 1—Practice ASTM G151 describes performance criteria for all exposure devices that use laboratory light sources. This practice replaces Practice G 26, which describes very specific designs for devices used for xenon-arc exposures. The apparatus described in Practice G 26 iscovered by this practice.

1.2 Test specimens are exposed to filtered xenon arc light under controlled environmental conditions. Different types of xenon arc light sources and different filter combinations are described.

1.3 Specimen preparation and evaluation of the results are covered in ASTM methods or specifications for specific materials. General guidance is given in Practice ASTM G151 and ISO 4892-1. More specific information about methods for determining the change in properties after exposure and reporting these results is described in Practice D 5870.

1.4 The values stated in SI units are to be regarded as the standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

1.5.1 Should any ozone be generated from the operation of the lamp(s), it shall be carried away from the test specimens and operating personnel by an exhaust system.

1.6 This practice is technically similar to the following ISO documents: ISO 4892-2, ISO 11341, ISO 105 B02, ISO 105 B04, ISO 105 B05, and ISO 105 B06.

2. Referenced Documents

2.1 ASTM Standards: 2

D 3980 Practice for Interlaboratory Testing of Paint and Related Materials

D 5870 Practice for Calculating Property Retention Index of Plastics

E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

G 26 Practice for Operating Light-Exposure Apparatus

(Xenon-Arc Type) With and Without Water for Exposure of Nonmetallic Materials

G 113 Terminology Relating to Natural and Artificial Weathering Tests for Nonmetallic Materials ASTM G151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices That Use Laboratory Light Sources

2.2 CIE Standards:

CIE-Publ. No. 85: Recommendations for the Integrated Irradiance and the Spectral Distribution of Simulated\

Solar Radiation for Testing Purposes3

2.3 International Standards Organization Standards:

ISO 1134, Paint and Varnishes—Artificial Weathering Exposure to Artificial Radiation to Filtered Xenon Arc

Radiation4

ISO 105 B02, Textiles—Tests for Colorfastness—Part B02

Colorfastness to Artificial Light: Xenon Arc Fading Lamp

Test4

ISO 105 B04, Textiles—Tests for Colorfastness—Part B04

Colorfastness to Artificial Weathering: Xenon Arc Fading

Lamp Test4

ISO 105 B05, Textiles—Tests for Colorfastness—Part B05

1 This practice is under the jurisdiction of ASTM Committee G03 onWeathering and Durability and is the direct responsibility of Subcommittee G03.03 on　Simulated and Controlled Exposure Tests.Current edition approved Oct. 1, 2005. Published November 2005. Originally approved in 1997. Last previous edition approved in 2005 as ASTM G154 – 05.

2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standardsvolume information, refer to the standard’s Document Summary page on the ASTM website.

3 Available from American National Standards Institute, 11 W. 42d St., 13th　Floor, New York, NY 10036).

4 Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.

Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.

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