Astm | E562-19e1 ((new))

While modern image analysis software (like ImageJ or proprietary systems) can perform "automatic thresholding," ASTM E562 remains the primary validation method.

The "19e1" suffix indicates the standard was originally approved or revised in 2019, with "e1" denoting a minor editorial change that did not affect the technical content of the document. 1. Why Is This Standard Necessary? astm e562-19e1

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 While modern image analysis software (like ImageJ or

Half point: Counts as 0.5 if it falls exactly on the boundary. Why Is This Standard Necessary

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.