ASTM E562-11 PDF
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 equations for calculating these values are as follows: Repeated point count measurements on an individual micrograph is not allowed.
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. 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 Work Item s – aetm revisions of this standard. Do not observe the image while translating to a new?
Table 3 gives a guide to the number of? This can be achieved by using either a circular grid or a square grid placed at an angle to the microstructural periodicity. Improving the Volume Fraction Estimate Thus, the method can be applied to any type of solid material from which adequate twodimensional f562-11 can be prepared and observed.
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 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 e562-111 number of placements on different fields, an unbiased statistical estimation of the volume fraction of an identifiable constituent or phase 1, 2, 3.
This additional effort should reduce the con? Any number of clearly distinguishable constituents or phases within a microstructure or macrostructure can be counted using the method.
The values in Table 2 do e562–11 correspond to theoretical constraints; but, by using these values, empirical observations have shown that the method is optimized for a given precision. Last previous edition E — atsm NOTE 1— Table 1 gives the appropriate multiplying factors t for any number of?
ASTM International – Standard References for ASTM E – 11
The value of the multiplier, t, can be found in Table 1. Link to Active This link will always route to the current Active version zstm the standard. A grand average can be calculated by taking the average of the set means in this case. The point grid, with four times the number of grid points, decreased?
A number in parentheses indicates the year of last reapproval. 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 average point fraction e562-1 n measured? ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
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. If you feel that your comments ast, not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. This can be accomplished by moving the x and y stage mechanism a?
Published June 10, To avoid bias, questionable points should be counted as one half. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Your comments will receive careful consideration at a asstm of the responsible technical committee, which you may attend. This test method has been described 4 as being superior to other manual methods with regard to effort, bias, and simplicity.
ASTM E562 – 11
Guidelines are given in 9. If no sample heterogeneity is indicated that is, the con? The use of —point grid facilitates easy volume percent calculations. Two common types of grids circular or square array are shown in Fig. e5662-11
Current edition approved April 10, Guidelines are given in 7. Historical Version s – view previous versions of standard. Table 2 provides guidelines for this selection. Point counting measurements should be completed on different? Guidelines are given in Section 8.
In this case, more rigorous statistical signi? 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 asym view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: If another method of?