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.
|Published (Last):||13 July 2013|
|PDF File Size:||13.63 Mb|
|ePub File Size:||18.47 Mb|
|Price:||Free* [*Free Regsitration Required]|
Thus, the method can be applied to any type of solid material from which adequate two-dimensional sections can be prepared and observed.
Standard Test Method f 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. Do not observe the image while translating to a new? The equations for calculating these values are as follows: Guidelines are given in 7. Precision and Bias 5 Current edition approved April 10, If another method of? If you feel asm your comments have not received a fair hearing you e62-11 make your views known to the ASTM Committee on Standards, at the address shown below.
Guidelines are given in Section 8.
ASTM E562 – 11
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability xstm regulatory limitations prior to use. Any number of clearly distinguishable constituents or phases within a microstructure or macrostructure can be counted using the method. 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? Thus, the method can be applied to any type of solid material from which adequate twodimensional sections can be prepared and observed. Two common types of grids circular or square array are shown in Fig.
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. If no sample heterogeneity is indicated that is, the con?
ASTM International – Standard References for ASTM E – 11
Table 3 gives a guide to the number of? ASTM International takes no position respecting the validity of any patent rights asserted in connection with any qstm mentioned in this standard. Table 2 provides guidelines for this selection.
A grand average can be calculated by taking the average of the set means in this case.
This standard is subject to revision at any time by the zstm technical committee and must be reviewed every? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. These values were calculated under the assumption that the features have a random distribution upon the metallographic section. Improving the Volume Fraction Estimate It is the responsibility of the user of this standard to establish appropriate safety atm health practices and determine the applicability of regulatory limitations prior to use.
Historical Version s – view previous versions of standard.
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 astmm identifiable constituent or phase 1, 2, 3.
Link to Active This link will always route to the current Active version of the standard.
f562-11 No other units of measurement are included in this standard. NOTE 1— Table 1 gives the appropriate multiplying factors t for any number of? This additional effort should reduce the con? The value of the multiplier, t, can be found in Table 1. This can be accomplished by moving the x and y stage mechanism a? Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: A number in parentheses indicates the year of last reapproval.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. Originally published as E — Work Item s – proposed revisions of this standard.
Astj avoid bias, questionable points should be counted as one half. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Published June 10, However, it should be recorded since it may have an effect upon the precision obtained. In this case, more rigorous statistical signi?
Point counting measurements e5662-11 be completed on different? This test method has been described 4 as being superior to other manual methods with regard to effort, bias, and simplicity. 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.
The point grid, with four times the number of grid points, decreased?