ASTM E1854-13由美国材料与试验协会 US-ASTM 发布于 2013。
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4.1 This practice was written primarily to guide test participants in establishing, identifying, maintaining, and using suitable environments for conducting high quality neutron tests. Its development was motivated, in large measure, because inadequate controls in the neutron-effects-test process have in some past instances resulted in exposures that have differed by factors of three or more from irradiation specifications. A radiation test environment generally differs from the environment in which the electronics must operate (the operational environment); therefore, a high quality test requires not only the use of a suitable radiation environment, but also control and compensation for contributions to damage that differ from those in the operational environment. In general, the responsibility for identifying suitable test environments to accomplish test objectives lies with the sponsor/user/tester and test specialist part of the team, with the assistance of an independent validator, if available. The responsibility for the establishment and maintenance of suitable environments lies with the facility operator/dosimetrist and test specialist, again with the possible assistance of an independent validator. Additional guidance on the selection of an irradiation facility is provided in Practice F1190.
4.2 This practice identifies the tasks that must be accomplished to ensure a successful high quality test. It is the overall responsibility of the sponsor or user to ensure that all of the required tasks are complete and conditions are met. Other participants provide appropriate documentation to enable the sponsor or user to make that determination.
4.3 The principal determinants of a properly conducted test are: (1) the radiation test environment shall be well characterized, controlled, and correlated with the specified irradiation levels; (2) damage produced in the electronic materials and devices is caused by the desired, specified component of the environment and can be reproduced at any other suitable facility; and (3) the damage corresponding to the specification level derived from radiation environments in which the electronics must operate can be predicted from the damage produced by the test environment. In order to ensure that these requirements are met, system developers, procurers, users, facility operators, and test personnel must collectively meet all of the essential requirements and effectively communicate to each other the tasks that must be accomplished and the conditions that must be met. Criteria for determining and maintaining the suitability of neutron radiation environments for 1-MeV equivalent displacement damage testing of electronics parts are presented in Section 5. Mandatory requirements for test consistency in neutron displacement damage testing of electronic parts are presented in Section 5. Additional background material on neutron testing and important considerations for gamma dose and dose rate effects are presented in (non-mandatory) Appendix X1 and Appendix X2, but compliance is not required.
翻新安装根据ASTM E4和ISO 9513标准,由于换用了新的零件,作了修改,翻新的系统必须在使用前重新进行验证。ASTM E4“试验机力鉴定标准规程”规定,“试验机维修后,对称重系统的运行或显示数值有影响的,应立即进行验证。”因此,有必要考虑选择这样的翻新供应商:能够圆满完成翻新工作,微调系统设定,同时能够提供所有必需的服务,包括对载荷传感器、引伸计、位移和速度进行验证。...
,横梁位移898mm和垂直试验空间1067mm一般已经足够.如果是弹性体的试验,横梁位移和垂直试验空间会要求高一点.所以应有超宽的机架或超高的机架以适应不同客户的需求.载荷传感器的选择:载荷测量精度是否满足或超出ASTM4、ISO7500/1的标准.载荷传感器还应考虑:量程、准确度、重复性、偏移载入错误、非线性、稳定补偿范围、温度零点漂移及灵敏度....
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