Standard Practice for Exposure of Adhesive Specimens to Ionizing Radiation
粘合剂样品暴露于电离辐射的标准实施规程
发布日期:
2023-01-01
1.1
本规程的目的是在测定辐射引起的物理或化学性质变化之前,确定粘结试样中聚合物粘合剂暴露于电离辐射的条件。本推荐规程特别涵盖以下类型的辐射:伽马或X射线辐射、电子或β射线辐射、中子以及这些辐射的混合物,如反应堆辐射。
1.2
本规程仅规定了辐照条件,但不包括试样制备、试验条件或试验评估。这些都包含在各种ASTM方法或特定材料规范中。
1.3
本规程涵盖以下五种接触类型的程序:
程序 A.
-环境条件下的暴露。
程序 B
-在受控温度下暴露。
程序 C
-暴露在空气以外的介质中。
程序 D
-负载下暴露。
程序 E
-结合程序A至D中列出的两个或多个变量的暴露。
注1:
在辐照期间测量材料特性的问题涉及屏蔽和远程控制设施,因此,本实践中不考虑这些问题。
1.4
以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。
1.5
本标准并不旨在解决与其使用相关的所有安全问题(如有)。本标准的使用者有责任在使用前建立适当的安全和健康实践,并确定监管限制的适用性。
1.5.1
电气危险:
警告
-本规程的使用者必须意识到,使用电气仪表存在固有的危险,并且本规程不能也不会替代特定程序所用仪表的实际知识。
1.5.2
无线电频率:
警告
-带起搏器的人可能会受到射频的影响。
1.6
本国际标准是根据世界贸易组织技术性贸易壁垒(TBT)委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。
=====意义和用途======
4.1
本规程中概述的程序旨在标准化粘合剂的暴露-
用于研究电离辐射效应的粘结试样,但已制成足够的柔性,从而可以在这一辐照方法的范围内满足各种条件。由于程序的灵活性,实验者必须了解将发生的变化类型以及影响这些变化的条件。
1.1
The purpose of this practice is to define conditions for the exposure of polymeric adhesives in bonded specimens to ionizing radiation prior to determination of radiation-induced changes in physical or chemical properties. This recommended practice specifically covers the following kinds of radiation: gamma or X-ray radiation, electron or beta radiation, neutrons, and mixtures of these such as reactor radiation.
1.2
This practice specifies only the conditions of irradiation but does not cover the preparation of test specimens, testing conditions, or the evaluation of test. These are covered in the various ASTM methods or specifications for specific materials.
1.3
This practice covers procedures for the following five types of exposure:
Procedure A
—Exposure at ambient conditions.
Procedure B
—Exposure at controlled temperature.
Procedure C
—Exposure in a medium other than air.
Procedure D
—Exposure under load.
Procedure E
—Exposure combining two or more of the variables listed in Procedures A to D.
Note 1:
The problems of measuring the properties of materials during irradiation involve shielding and remote control facilities and are, therefore, not considered in this practice.
1.4
The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
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
Electrical Hazard:
Warning
—The users of this practice must be aware that there are inherent dangers associated with the use of electrical instrumentation and that this practice cannot and will not substitute for a practical knowledge of the instrument used for a particular procedure.
1.5.2
Radio Frequency:
Warning
—Persons with pacemakers may be affected by the radio frequency.
1.6
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.
====== Significance And Use ======
4.1
The procedures outlined in this practice are designed to standardize the exposure of adhesive-bonded specimens for the purpose of studying the effects of ionizing radiation, but have been made flexible enough so that a large variety of conditions may be met within the scope of this one irradiation method. Because of this flexibility in the procedures, it is important that the experimenter have some idea of the kind of changes that will occur, and of the conditions that will affect these changes.