原创来源:北检院 发布时间:2023-02-12 15:35:53 点击数:
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GB/T 5654-1985 液体绝缘材料工频相对介电常数、介质损耗因数和体积电阻率的测量
简介: 本标准适用于在试验温度下呈液态的绝缘材料的相对介电常数、介质损耗因数和体积电阻率的测量。
信息:ICS:29.040.20 CCS:K15 发布:1985-11-25 实施:1986-12-01
JJF 1618-2017 绝缘油介质损耗因数及体积电阻率测试仪校准规范
简介:
信息:ICS: CCS: 发布:2017-02-28 实施:2017-05-28
ASTM E562-2008 用系统的人工逐点计数法测定体积因数的标准试验方法
简介:This test method is based upon the stereological principle that a grid with a number of regularly arrayed points, when systematically placed over an image of a two-dimensional section through the microstructure, can provide, after a representative number of placements on different fields, an unbiased statistical estimation of the volume fraction of an identifiable constituent or phase (1, 2, 3). This test method has been described (4) as being superior to other manual methods with regard to effort, bias, and simplicity. Any number of clearly distinguishable constituents or phases within a microstructure (or macrostructure) can be counted using the method. Thus, the method can be applied to any type of solid material from which adequate two-dimensional sections can be prepared and observed. A condensed step-by-step guide for using the method is given in Annex A1. 1.1 This test method describes a systematic manual point counting procedure for statistically estimating the volume fraction of an identifiable constituent or phase from sections through the microstructure by means of a point grid. 1.2 The use of automatic image analysis to determine the volume fraction of constituents is described in Practice E 1245. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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.
信息:ICS:77.040.99 CCS:H10 发布:2008 实施:
ASTM E562-2008e1 用系统的人工逐点计数法测定体积因数的标准试验方法
简介:This test method is based upon the stereological principle that a grid with a number of regularly arrayed points, when systematically placed over an image of a two-dimensional section through the microstructure, can provide, after a representative number of placements on different fields, an unbiased statistical estimation of the volume fraction of an identifiable constituent or phase (1, 2, 3). This test method has been described (4) as being superior to other manual methods with regard to effort, bias, and simplicity. Any number of clearly distinguishable constituents or phases within a microstructure (or macrostructure) can be counted using the method. Thus, the method can be applied to any type of solid material from which adequate two-dimensional sections can be prepared and observed. A condensed step-by-step guide for using the method is given in Annex A1. 1.1 This test method describes a systematic manual point counting procedure for statistically estimating the volume fraction of an identifiable constituent or phase from sections through the microstructure by means of a point grid. 1.2 The use of automatic image analysis to determine the volume fraction of constituents is described in Practice E1245. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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.
信息:ICS:77.040.99 CCS:H10 发布:2008 实施:
ASTM E562-2005 用系统的人工逐点计数法测定体积因数的标准试验方法
简介:This test method is based upon the stereological principle that a grid with a number of regularly arrayed points, when systematically placed over an image of a two-dimensional section through the microstructure, can provide, after a representative number of placements on different fields, an unbiased statistical estimation of the volume fraction of an identifiable constituent or phase (1, 2, 3).3 This test method has been described (4) as being superior to other manual methods with regard to effort, bias, and simplicity. Any number of clearly distinguishable constituents or phases within a microstructure (or macrostructure) can be counted using the method. Thus, the method can be applied to any type of solid material from which adequate two-dimensional sections can be prepared and observed. A condensed step-by-step guide for using the method is given in Annex A1. 1.1 This test method describes a systematic manual point counting procedure for statistically estimating the volume fraction of an identifiable constituent or phase from sections through the microstructure by means of a point grid.1.2 The use of automatic image analysis to determine the volume fraction of constituents is described in Practice E 1245.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.
信息:ICS:77.040.99 (Other methods of testing metals) CCS: 发布:2005 实施:
ASTM E562-2002 用系统的人工逐点计数法测定体积因数的标准试验方法
简介:This test method is based upon the stereological principle that a grid with a number of regularly arrayed points, when systematically placed over an image of a two-dimensional section through the microstructure, can provide, after a representative number of placements on different fields, an unbiased statistical estimation of the volume fraction of an identifiable constituent or phase (1, 2, 3).3 This test method has been described (4) as being superior to other manual methods with regard to effort, bias, and simplicity. Any number of clearly distinguishable constituents or phases within a microstructure (or macrostructure) can be counted using the method. Thus, the method can be applied to any type of solid material from which adequate two-dimensional sections can be prepared and observed. A condensed step-by-step guide for using the method is given in Annex A1. 1.1 This test method describes a systematic manual point counting procedure for statistically estimating the volume fraction of an identifiable constituent or phase from sections through the microstructure by means of a point grid. 1.2 The use of automatic image analysis to determine the volume fraction of constituents is described in Practice E1245. 1.3 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.
信息:ICS:77.040.99 (Other methods of testing metals) CCS: 发布:2002 实施:
1、确认客户委托,寄样。
2、到样之后,确定具体的试验项目以及试验方案。
3、实验室报价。
4、签订保密协议,进行试验。
5、完成试验,确定检测报告
6、后期技术服务
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