ASTM G90 performs accelerated outdoor aging testing of non-metallic materials by gathering natural light sources
ASTM G90-2017 Release information
Standard number ASTM G90-2017
Standard Practice for Accelerated Implementation of Outdoor Wind Erosion of non-metallic Materials by means of Concentrated Natural sunlight rays
English name Standard Practice for Performing Accelerated Outdoor Weathering of Nonmetallic Materials Using Concentrated Natural Sunlight
发布日期 2017
实施日期
废除日期 无
Chinese standard classification number H25
ASTM G90-2017 “通过收集自然光源对非金属材料进行加速户外老化测试”
由美国ASTM出版
ASTM G90-2017 Scope of application
1.1 Fresnel-reflecting concentrators using the sun as source are utilized in the accelerated outdoor exposure testing of the Sun materials.
1.2 This practice covers a procedure for performing accelerated outdoor exposure testing of materials using a Fresnel-reflector accelerated outdoor weathering test machine. The apparatus (see Fig. 1 and Fig. 2) and guidelines are described herein to minimize the variables encountered during outdoor accelerated exposure testing.
1.3 This practice does not specify the exposure conditions best suited for the materials to be tested but is limited to the method of obtaining, measuring, and controlling the procedures and certain conditions of the exposure. 样品制备, test conditions, and evaluation of results are covered in existing methods or specifications for specific materials.
1.4 The Fresnel-reflector accelerated outdoor exposure test machines described may be suitable for the determination of the relative durability of materials exposed to sunlight, 热, and moisture, provided the mechanisms of chemical or physical change, 或两者, which control the acceleration factors for the materials do not differ significantly.
1.5 This practice establishes uniform sample mounting and in-test maintenance procedures. Also included in the practice are standard provisions for maintenance of the machine and Fresnel-reflector mirrors to ensure cleanliness and durability.
ASTM G90-2017 “通过收集自然光源对非金属材料进行加速户外老化测试”
1.6 This practice shall apply to specimens whose size meets the dimensions of the target board as described in 8.2.
1.7 For test machines currently in use, this practice may not apply to specimens exceeding 13 毫米 (1/2 in.) in thickness because cooling may be questionable.
1.8 Values stated in SI units are to be regarded as the standard. The inch-pound units in parentheses are provided for information only.
1.9 该标准并不旨在解决所有安全问题, 如果有的话, 与其使用相关. 本标准的使用者有责任建立适当的安全机制, 健康, 和环境实践，并在使用前确定监管限制的适用性.
1.10 本国际标准是根据《关于制定国际标准的原则的决定》中确立的国际公认的标准化原则制定的, 世界贸易组织发布的技术性贸易壁垒指南和建议 (贸易壁垒) 委员会.
1.1 Fresnel reflector concentrators using the sun as a light source are used for accelerated outdoor exposure tests of materials.
1.2 This protocol covers procedures for accelerated outdoor exposure testing of materials using Fresnel reflectors accelerated outdoor weathering testing machines. This paper describes devices (see Figures 1 和 2) and guidelines to minimize the variables encountered during outdoor accelerated exposure tests.
1.3 This Procedure does not specify exposure conditions suitable for the material to be tested, but is limited to methods of obtaining, measuring and controlling exposure procedures and specific conditions. Existing methods or specifications for specific materials cover sample preparation, test conditions, and evaluation of results.
1.4 The Fresnel Reflector accelerated outdoor exposure testing machine may be suitable for determining the relative durability of materials exposed to sunlight, 热量和水分, provided that there is no significant difference in the chemical or physical change mechanism controlling the acceleration factor of the material.
ASTM G90-2017 “通过收集自然光源对非金属材料进行加速户外老化测试”
1.5 This procedure establishes uniform sample installation and test maintenance procedures. This code also includes standard regulations for maintaining machines and Fresnel mirrors to ensure cleanliness and durability.
1.6 This procedure shall apply to specimens whose dimensions conform to the target plate dimensions described in 8.2.
1.7 For testing machines currently in use, this procedure may not apply to samples thicker than 13 毫米 (1/2 in.), as cooling may be problematic.
1.8 Values expressed in the International System of Units shall be considered as standards. Inch-pound units in brackets are for reference only.
1.9 本标准并非旨在解决所有安全问题 (如果有的话) 与其使用相关. 本标准的使用者有责任建立适当的安全, 使用前的健康和环境实践以及确定监管限制的适用性.
1.10 本国际标准基于《关于制定国际标准的原则的决定》中确立的国际公认的标准化原则, 世贸组织发布的技术性贸易壁垒指南和建议 (贸易壁垒) 委员会.
一个提醒: Newer versions of this ASTM G90-2017 may exist, and it is recommended to seek confirmation from the publisher of ASTM G90-2017.