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):||20 August 2004|
|PDF File Size:||4.21 Mb|
|ePub File Size:||8.24 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.
Your comments are invited either for revision of this standard or for additional standards and aztm be addressed to ASTM International Headquarters. Link to Active This link will always route to the current Active version of the standard.
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. Referenced Documents purchase separately The documents listed below asm referenced within the subject standard but are not provided as part of the standard.
The value of the multiplier, t, can be found in Table 1. Published June 10, A number in parentheses indicates the year of last reapproval.
ASTM E562 – 11
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. Do not observe the image while translating to a new? The equations for calculating these values are as follows: Work Item s – proposed revisions of this standard.
A grand average can be calculated by taking the average of xstm set means in this case. Current edition approved April 10, The average point fraction for n measured? Guidelines are given in Section 8. Historical Version s – view previous versions of standard. This time estimate can satm be decreased to 15 min after some experience and familiarity with the point counting procedure and the microstructure analyzed are obtained. 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.
This additional effort should reduce the con? Table 3 gives a guide to the number of? The point grid, with four times the number of grid points, decreased? 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.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Table 2 provides guidelines for this selection.
Precision and Bias 5 This method is applicable only to bulk opaque planar sections viewed with re? Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: In this case, more rigorous statistical signi?
Two common types of grids circular or square array are shown in Fig.
ASTM International – Standard References for ASTM E – 11
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Summary of Test Method 4. If another method of? Last previous edition E — The use of —point grid facilitates easy volume percent calculations.
This test wstm has been described 4 as being superior to other manual methods with regard to effort, bias, and simplicity. 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.
This can be achieved by using either a circular grid or a atsm grid placed at an angle to the microstructural periodicity. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
Improving the Volume Fraction Estimate