ASTM EStandard Test Method for Determining Volume 1 95 % Con? dence Interval Multipliers No. of Fields n 5 6 7 8 9 10 11 12 13 ASTM Standard E, using an image analysis routine with Leica .. of Constructional Steel Research 64(11) doi: / ASTM E Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count. Front Cover. American Society for Testing and.
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Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Guidelines are given in 9.
Work Item s – proposed revisions of this standard. Thus, the method can be applied to any type of solid material from which adequate two-dimensional sections can be prepared and observed.
Improving the Volume Fraction Estimate Current edition approved April 10, Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Table 3 gives axtm guide to the number of? Thus, the method can be applied to any type of solid material from which adequate twodimensional sections can be prepared and observed.
A grand average can be calculated by taking the average of the set means in this case. Historical Version e526-11 – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: Historical Version s – view previous versions of standard.
This can be achieved by using either a circular grid or a square grid placed at an aatm to the microstructural periodicity. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
Do not observe the image while translating to a new?
ASTM International – Standard References for ASTM E – 11
This time estimate can probably be decreased to 15 min e526-11 some experience and familiarity with the point counting procedure and the microstructure analyzed are obtained.
In this case, more rigorous statistical signi? Standard Test Method f Point counting measurements should be completed on different? Repeated point count measurements on an individual micrograph is not allowed. Precision and Bias 5 Link to Active This link will always route to the current Active version of the standard.
If another method of? This test method has been described 4 as being superior to other manual methods with regard to effort, bias, and simplicity.
The values in Table 2 do not correspond to theoretical constraints; but, by using these values, empirical observations have shown that the method is optimized for a given precision.
ASTM E562 – 11
A number ashm parentheses indicates the year of last reapproval. Diagrams of two possible grids, one with a circular pattern and one with a square pattern, which are recommended for use, are shown in Fig.
Guidelines are given in 7. 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.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
The average point fraction for n measured? Originally published as E — E56-11 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 astj 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.
The value of the multiplier, t, can be found astj Table 1. If no sample heterogeneity is indicated that is, the con? Two common types of grids circular or square array are shown in Fig. This additional effort should reduce the con?
This can be accomplished by moving the x and y stage mechanism a?
Any number of clearly sstm constituents or phases within a microstructure or macrostructure can be counted using the method. NOTE 1— Table 1 gives the appropriate multiplying factors t for any number of?
Last previous edition E — Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. This method is applicable only to bulk opaque planar sections viewed with re? Published June 10, No other units of measurement are included in this standard. 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.
To avoid bias, questionable points should be counted as one half.