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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ASTM E562 – 11
Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: Precision and Bias 5 Two common types r562-11 grids circular or square array are shown in Fig.
Historical Version s – view previous versions of standard. Guidelines are given in 9. 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.
E56211 use of —point grid facilitates easy volume percent calculations.
A number in parentheses indicates the year of last reapproval. Any number of clearly e562-1 constituents or phases within a microstructure or macrostructure can be counted using the method.
The point grid, with four times the number of grid points, decreased? Improving the Volume Fraction Estimate A superscript epsilon e indicates an editorial change since the last revision or reapproval.
The value of the multiplier, t, can be found in Table 1. Thus, the method can be applied to any type of solid material from which adequate two-dimensional sections can be prepared and observed. This can be achieved by using either a circular grid or a square grid placed at an angle to the microstructural periodicity.
To avoid bias, questionable atm should be counted as one half. Summary of Test Method 4. These values were calculated under the assumption that the features have a random distribution upon the metallographic section. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Table 2 provides guidelines for this qstm. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Do not observe the image while translating to a new? This can be accomplished by moving the x and y stage mechanism a?
ASTM International – Standard References for ASTM E – 11
Guidelines are given in 7. The equations for calculating these values are as follows: Guidelines are given in Section 8.
If another method of? Originally published as E — Astk counting measurements should be completed on different? Work Item s – proposed revisions of this standard. A grand average can be calculated by taking the average of the set means in this case. Last previous edition E — Table 3 gives a guide to the number of?
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
ASTM International takes no position respecting the validity of any patent w562-11 asserted in connection with any item mentioned in this standard. Published June 10, This additional effort should reduce the con?
However, it should be recorded since it may have an effect upon the precision obtained. Link to Active This link will always route to the atsm Active version of the standard.
Thus, the method can be applied to any type of solid material from which adequate twodimensional sections can be prepared and observed. 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.