Astm E562-19e1 May 2026

) is calculated by dividing the total number of "hits" by the total number of points applied across all fields. 3. Statistical Confidence and Precision

When high-contrast images are available, allowing for much faster processing of large datasets.

Quantitative Description of the Microstructure of Duplex ... - MDPI astm e562-19e1

When the contrast between phases is poor or the etching is uneven, making it difficult for software to distinguish between them.

To ensure statistical accuracy, this process is repeated across multiple fields of view (different locations on the sample). Calculation: The volume fraction ( PPcap P sub cap P ) is calculated by dividing the total number

The core of the standard is a simple but effective geometric probability technique. Instead of attempting to measure every grain or particle, an observer uses a transparent grid of points. Step-by-Step Procedure:

The operator counts how many grid points fall directly on the "phase of interest" (e.g., how many points hit a martensite island). Full point: Counts as 1 if it is clearly inside the phase. Quantitative Description of the Microstructure of Duplex

Half point: Counts as 0.5 if it falls exactly on the boundary.

Many researchers use ASTM E562-19e1 to "calibrate" or verify their automated software settings to ensure the computer is seeing the same volume fractions as a human expert. 5. Typical Applications

Performance depends on a precise 50/50 balance between ferrite and austenite.