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        首頁 > 標準大全 > ASTM G147-2017標準詳情

        ASTM G147-2017測試標準

        (該標準已經被ASTM G147-2017替代)
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        ASTM G147-2017標準介紹

        ASTM G147-2017發行信息

        標準號ASTM G147-2017

        中文名 自然與人工氣候試驗用非金屬材料的狀態調節和處理的標準規程

        英文名 Standard Practice for Conditioning and Handling of Nonmetallic Materials for Natural and Artificial Weathering Tests





        國際標準分類號19.020 (Test conditions and procedures in general) 


        ASTM G147-2017適用范圍

        Weathering is an inherently variable science due to the fact that weather itself is variable. In addition, there can be variability in results in artificial accelerated testing even when all devices are running identical exposure cycles. Therefore, it is essential to control all factors as much as possible in order to reduce the overall source of error.

        Proper handling of specimens is extremely important for maintaining integrity of the material being evaluated. Damage to specimens caused by improper handling and labeling can adversely affect the validity of the testing program, causing loss of money and time. Improper handling can introduce nonstandard procedures into the protocol which may be a significant source of variability, adversely affecting the overall precision of results obtained. Improper handling may also introduce a bias in the results obtained.

        Changes to materials can occur even under a seemingly benign conditioning environment, especially if the specimen has already been exposed. Therefore it is necessary to minimize the number and length of non-testing periods in order that the exposure is the only cause of further changes.

        1.1 This practice covers specimen preparation, identification, packing, shipping, handling, and conditioning before, during, and after natural and artificial weathering testing.

        1.2 This practice includes details on the conditioning of specimens after exposure and before examination. This practice also covers long-term storage of file specimens.

        1.3 Conditioning in this practice does not refer to the specific act of exposing the specimens to the weathering factors.

        1.4 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.

        NOTE 1:There is no equivalent ISO standard describing procedures for identification, shipping, conditioning, and handling of specimens intended for natural or artificial weathering tests. ISO 139 and ISO 291 describe procedures used for conditioning specimens prior to and during physical property testing.

        1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.





        注1:沒有同等的ISO標準描述用于自然或人工風化試驗的樣品的識別、裝運、調節和處理程序。ISO 139和ISO 291描述了物理性能測試之前和期間用于調節試樣的程序。


        Q-LAB的Q-SUN系列氙燈試驗箱符合ASTM G147-2017標準。

        溫馨提醒:本ASTM G147-2017可能存在更新的版本,建議尋找ASTM G147-2017的發行商確認。


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