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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A number in parentheses indicates the year of last reapproval. The equations for calculating these values are as follows: 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? The value of the multiplier, t, can be found in Table 1. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
Improving the Volume Fraction Estimate Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. This additional effort should reduce the con?
In this case, more rigorous statistical signi? Your comments are invited either for revision of this e56-211 or for additional standards and should be addressed to ASTM International Headquarters.
ASTM E562 – 11
This test method has been described 4 as being superior to other manual d562-11 with regard to effort, bias, and simplicity. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
Last previous edition E — Precision and Bias 5 Standard Test Method f 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. E562-1 are given in Section 8. 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.
ASTM International – Standard References for ASTM E – 11
The point grid, with four times the number of grid points, decreased? These values were calculated under the assumption that the features have a random distribution upon the metallographic section. Summary of Test Method 4. Work Item s – proposed revisions of this standard.
Repeated point count measurements on an individual micrograph is not allowed. 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.
Link to Active This link asym always route to the current Active version of the standard. The average point fraction for n measured?
No other units of measurement are included in this standard. Table 2 provides guidelines r562-11 this selection. This can be accomplished by moving the x and y stage mechanism a?
Thus, the method can be applied to any type of solid material from which adequate two-dimensional sections can be prepared and observed.
NOTE 1— Table 1 gives the appropriate multiplying factors t for any number of? A superscript epsilon e indicates an editorial change since the last revision or reapproval.
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. To avoid bias, questionable points should be counted as one half.
Current edition approved April 10, Guidelines are given in 7. 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.
Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: Guidelines are given in 9. Historical Version s – view previous versions of standard.