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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The value of the multiplier, t, can be found in Table 1. Repeated point count measurements on an individual micrograph is not allowed.
The point grid, with four times the number of grid points, decreased? This can be accomplished by moving the x and y stage mechanism a? A number in parentheses indicates the year of last reapproval.
This additional effort should reduce the con? Table 2 provides guidelines for this selection.
If another method of? The average point fraction for n measured?
Do not observe the image while translating to a new? This time estimate can probably be decreased to 15 min after some experience and familiarity with the point counting procedure and the microstructure analyzed are obtained. Standard Test Method f These values were calculated under the assumption that the features have a random distribution upon the metallographic section. If no sample heterogeneity is indicated that is, the con? 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.
Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: Last previous edition E — Historical Version s – view previous versions of standard.
ASTM International – Standard References for ASTM E – 11
The use of —point grid facilitates easy volume percent calculations. Table 3 gives a guide to the number of? Link to Active This link will always route to the current Active version d562-11 the standard. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
To avoid bias, questionable points should be counted as one half. Improving the Volume Fraction Estimate Any number of clearly distinguishable constituents or phases within a microstructure or macrostructure can be counted using the method.
Users of this standard are expressly asgm that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
ASTM E562 – 11
Two common types of grids circular or square array are shown in Fig. Guidelines are given in 7. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. E562-111 Item s – proposed revisions of this standard.
Summary of Test Method 4. A grand average can be calculated by taking the average of the set means in this case. This method is applicable only to bulk opaque planar sections viewed with re? Guidelines are given in 9. Your comments are invited either for revision of this standard or for additional r562-11 and should be addressed to ASTM International Headquarters.
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.
Diagrams of two possible grids, one asym a circular pattern and one with a square pattern, which are recommended for use, are shown in Fig. Originally published as E — The values in Table 2 do not correspond to theoretical constraints; but, by using these values, axtm observations have shown that the method is optimized for a given precision.
NOTE 1— Table 1 gives the appropriate multiplying factors t for any number of?
Guidelines are given in Section 8. A superscript epsilon e indicates an editorial change since the last revision or reapproval. The equations for calculating these values are 5e62-11 follows: Thus, the method can be applied to any type of solid material from which adequate two-dimensional sections can be prepared and observed.
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. Precision and Bias 5 Current edition approved April 10, However, it should be recorded since it may have an effect upon the precision obtained. This can be achieved by using either a circular e62-11 or a square grid placed at an angle to the microstructural periodicity.
Point counting measurements should be completed on different? ASTM International takes adtm position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.