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 can be accomplished by moving ee562-11 x and y stage mechanism a? 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 Guidelines are given in 9. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. This time estimate can e5622-11 be decreased to 15 min 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. Awtm reprints single or multiple copies of this standard may be obtained by r562-11 ASTM at the above address or at phonefaxor service astm.
In this case, more rigorous statistical signi? To avoid bias, questionable points should be counted as one half. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Your comments will receive careful consideration e5562-11 a meeting of the responsible technical committee, which you may attend. NOTE 1— Table 1 gives the appropriate multiplying factors t for any number of?
The point grid, with four times the number of grid points, decreased? Do not observe the image while translating to a new? Link to Active This link will always route to the current Active version of the standard.
ASTM E562 – 11
This method is applicable only to bulk opaque planar sections viewed with re? These values were calculated under the assumption that the features have a random distribution upon the metallographic section. This additional effort should reduce the con? This e562-111 is subject to revision at any time by the responsible technical committee and must be reviewed every? Two common types of grids circular or square array are shown in Fig.
Table 3 gives a guide to the number of? The equations for calculating these values are as follows: Repeated point count measurements on an individual micrograph is not allowed. 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.
ASTM International – Standard References for ASTM E – 11
However, it should be recorded since it may have an effect upon the precision obtained. Guidelines are given in 7. Published June 10, 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 asgm statistical estimation of the volume fraction of an identifiable constituent or phase 1, 2, 3.
Any number of clearly distinguishable constituents or phases within a microstructure or macrostructure can be counted using the method. Guidelines are given in Section 8. 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.
Current edition approved April 10, ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Last previous edition E — Improving the Volume Fraction Estimate No other units of measurement are included in this standard. The average point fraction for n measured? Historical Version s – view previous versions of standard. Work Item s – proposed revisions of this standard.
Users s562-11 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.
Point counting measurements should be completed on different? The value of the multiplier, t, can be found in Table 1. Thus, the method can be applied to any type of solid material from which adequate twodimensional sections can be prepared and observed. If r562-11 sample heterogeneity is indicated that is, the con?
Originally published as E — 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.