DIN EN 843-2-2007
高级工业陶瓷.室温单块陶瓷的机械特征.第2部分:杨氏模量、剪切模量和泊松比测定

Advanced technical ceramics - Mechanical properties of monolithic ceramics at room temperature - Part 2: Determination of Young's modulus, shear modulus and Poisson's ratio; English version of DIN EN 843-2:2007-03

DIN EN 843-2-2007 发布历史

This part of EN 843 specifies methods for determining the elastic moduli, specifically Young's modulus, shear modulus and Poisson's ratio, of advanced monolithic technical ceramics at room temperature. This European Standard prescribes four alternative methods for determining some or all of these three parameters: A The determination of Young's modulus by static flexure of a thin beam in three- or four-point flexure. B The determination of Young's modulus by forced longitudinal resonance, or Young's modulus, shear modulus and Poisson's ratio by forced flexural and torsional resonance, of a thin beam. C The determination of Young's modulus, shear modulus and Poisson's ratio from the time-of-flight of an ultrasonic pulse. D The determination of Young's modulus from the fundamental natural frequency of a struck bar (impulse excitation method). »•• All the test methods assume the use of homogeneous test pieces of linear elastic materials. NOTE 1 Not all ceramic materials are equally and linearly elastic in tension and compression, such as some porous materials and some piezoelectric materials. With the exception of Method C, the test assumes that the test piece has isotropic elastic properties. Method C may be used to determine the degree of anisotropy by testing in different orientations. NOTE 2 An ultrasonic method for dealing with anisotropic materials (ceramic matrix composites) can be found in ENV 14186 [1]. An alternative to Method D for isotropic materials using disc test pieces is given in Annex A. NOTE 3 At high porosity levels all of the methods except Method C may become inappropriate. The methods are only suitable for a maximum grain size (see EN 623-3), excluding deliberately added whiskers, of less than 10 % of the minimum dimension of the test piece. NOTE 4 The different methods given in this European Standard can produce slightly different results on the same material owing to differences between quasi-isothermal quasi-static and quasi-adiabatic dynamic conditions. In addition, the calculation routines for different methods have different origins and different potential uncertainties which have not been rigorously evaluated in producing this European Standard. Some information is given in Annex B (see also reference [2]).

DIN EN 843-2-2007由德国标准化学会 DE-DIN 发布于 2007-03。

DIN EN 843-2-2007 在中国标准分类中归属于: Q32 特种陶瓷，在国际标准分类中归属于: 81.060.30 高级陶瓷。

DIN EN 843-2-2007 发布之时，引用了标准

• EN 623-2 高级工业陶瓷.整块陶瓷.一般性能和结构性能.第2部分:密度和孔隙度的测定
• EN 623-3 
• EN 623-4 高级工业陶瓷.整块陶瓷.一般性能和结构性能.第4部分:表面粗糙度的测定;代替ENV 623-4-1993*， 2022-07-18 更新
• EN 843-1-2006 高技术陶瓷.环境温度单体陶磁的机械特性.第1部分:抗弯强度测定*， 2022-07-18 更新
• EN ISO 463 产品几何量技术规范(GPS).尺寸测量设备.机械千分表的设计和计量学特性
• EN ISO 7500-1 EN ISO 7500-1-2018
• EN ISO/IEC 17025 *， 2017-12-01 更新
• ISO 3611 产品几何技术规范(GPS).尺寸规格测量设备:外观测量用千分尺.计量学特征和设计*， 2010-11-01 更新
• ISO 6906 读数为0.02mm 的游标卡尺

* 在 DIN EN 843-2-2007 发布之后有更新，请注意新发布标准的变化。

DIN EN 843-2-2007的历代版本如下：

• 2007年03月 DIN EN 843-2-2007 高级工业陶瓷.室温单块陶瓷的机械特征.第2部分:杨氏模量、剪切模量和泊松比测定

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标准号

DIN EN 843-2-2007

发布日期

2007年03月

实施日期

废止日期

无

中国标准分类号

Q32

国际标准分类号

81.060.30

发布单位

DE-DIN

引用标准

EN 623-2 EN 623-3 EN 623-4 EN 843-1-2006 EN ISO 463 EN ISO 7500-1 EN ISO/IEC 17025 ISO 3611 ISO 6906

被代替标准

DIN V ENV 843-2-1996 DIN EN 843-2-2005

适用范围

This part of EN 843 specifies methods for determining the elastic moduli, specifically Young's modulus, shear modulus and Poisson's ratio, of advanced monolithic technical ceramics at room temperature. This European Standard prescribes four alternative methods for determining some or all of these three parameters: A The determination of Young's modulus by static flexure of a thin beam in three- or four-point flexure. B The determination of Young's modulus by forced longitudinal resonance, or Young's modulus, shear modulus and Poisson's ratio by forced flexural and torsional resonance, of a thin beam. C The determination of Young's modulus, shear modulus and Poisson's ratio from the time-of-flight of an ultrasonic pulse. D The determination of Young's modulus from the fundamental natural frequency of a struck bar (impulse excitation method). »•• All the test methods assume the use of homogeneous test pieces of linear elastic materials. NOTE 1 Not all ceramic materials are equally and linearly elastic in tension and compression, such as some porous materials and some piezoelectric materials. With the exception of Method C, the test assumes that the test piece has isotropic elastic properties. Method C may be used to determine the degree of anisotropy by testing in different orientations. NOTE 2 An ultrasonic method for dealing with anisotropic materials (ceramic matrix composites) can be found in ENV 14186 [1]. An alternative to Method D for isotropic materials using disc test pieces is given in Annex A. NOTE 3 At high porosity levels all of the methods except Method C may become inappropriate. The methods are only suitable for a maximum grain size (see EN 623-3), excluding deliberately added whiskers, of less than 10 % of the minimum dimension of the test piece. NOTE 4 The different methods given in this European Standard can produce slightly different results on the same material owing to differences between quasi-isothermal quasi-static and quasi-adiabatic dynamic conditions. In addition, the calculation routines for different methods have different origins and different potential uncertainties which have not been rigorously evaluated in producing this European Standard. Some information is given in Annex B (see also reference [2]).

DIN EN 843-2-2007系列标准