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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This method is applicable only to bulk opaque planar sections viewed with re? This can be achieved by using either a circular grid or a square grid placed at an angle to the microstructural periodicity. The use of —point grid facilitates easy volume percent calculations. If no sample heterogeneity is indicated that is, the con?
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.
To avoid bias, questionable points should be counted as one half. 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. In this case, more rigorous statistical signi? Current edition approved April 10, Do not observe the image while translating to a new?
Summary of Test Method 4. This test method has been described 4 as being superior to other manual methods with regard to effort, bias, and simplicity.
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.
Published June 10, A number in parentheses indicates the year of last reapproval.
NOTE 1— Astn 1 gives the appropriate multiplying factors t for any number of? Thus, the method can be applied to any type of solid material from which adequate twodimensional sections can be prepared and observed.
ASTM E562 – 11
Last previous edition E — Historical Version s – view previous versions of standard. No other units of measurement are included in this standard.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Guidelines are given in Section 8. However, it should be recorded since it may have an effect upon the precision obtained. The equations for calculating these values are as follows: Guidelines are given in 7. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Precision and Bias 5 The value of the multiplier, t, can be found in Table 1.
ASTM International – Standard References for ASTM E – 11
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Point counting measurements should be completed on different?
Historical Version s – view d562-11 versions of standard Work Item s – proposed revisions of this standard Translated Version s: A grand average can be calculated by taking the average of the set means in this case. Link to Active This link will always route to aztm current Active version of the standard.
Thus, the method can be applied to any type of solid material from which adequate two-dimensional sections can be prepared and observed. Improving the Volume Fraction Estimate