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):||27 July 2014|
|PDF File Size:||14.92 Mb|
|ePub File Size:||19.91 Mb|
|Price:||Free* [*Free Regsitration Required]|
This can be accomplished by moving the x and y stage mechanism a? The equations for calculating these values are as follows: ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in 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.
In this case, more rigorous statistical signi?
ASTM International – Standard References for ASTM E – 11
However, it should be recorded since it may have an effect upon the precision obtained. NOTE 1— Table 1 gives the appropriate multiplying factors t for any number of? This time estimate can probably be decreased to 15 e526-11 after some experience and familiarity with the point counting procedure and the microstructure analyzed are obtained. The use of —point grid facilitates easy volume percent calculations.
Standard Test Method f If another method of?
Published June 10, Point counting measurements should be completed on different? The average point fraction for n measured? Table 3 gives a guide to the number of?
Guidelines are given in 9. These values s562-11 calculated under the assumption that the features have a random distribution upon the metallographic section. Precision and Bias 5 This standard is subject to revision at adtm time by the responsible technical committee and must be reviewed every? Link to Active This link will always route to the current Active version of the standard.
Work Item s – proposed revisions of this standard. Any number of clearly distinguishable constituents or phases within a microstructure or macrostructure can be counted using the method. If no sample heterogeneity is indicated that is, the con? Current edition xstm April 10, 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.
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. Repeated point count measurements on an individual micrograph is not allowed. No other units of measurement are included in this standard.
A number in parentheses indicates e562–11 year of last reapproval. A grand average can be calculated by taking the average of the set means in this case.
ASTM E562 – 11
Last previous edition E — 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. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Do e62-11 observe the image while translating to a new? Guidelines are given in 7. Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: Originally published as E — The value of the multiplier, t, can be found in Table 1.
This test method has been described 4 as being superior to other manual methods with regard to effort, bias, and simplicity.
Two common types of grids circular or square array are shown in Fig. Improving r562-11 Volume Fraction Estimate This additional effort should reduce the con? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
This can be achieved by using either a circular grid or a square grid placed at an angle to the microstructural periodicity. The point grid, with four times the number of grid points, decreased? To avoid bias, questionable points should be counted as one half. This method is applicable only to bulk opaque planar sections viewed with re? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.