Emma's team reported their findings to the supplier, who was initially defensive. However, after reviewing the test results and the procedures used, the supplier acknowledged that Emma's team was correct. They worked together to resolve the issue, and Emma's team was able to provide feedback to the supplier on how to improve their manufacturing process.
ASTM E562-19 is a standard published by ASTM International that specifies procedures for preparing soil samples for particle-size analysis and for determining soil constants used in geotechnical engineering and soil science. First issued in earlier editions and updated in the 2019 revision (hence “-19”), this standard covers methods to obtain representative, reproducible, and well-documented soil samples from bulk material and to reduce samples to sizes appropriate for laboratory testing while minimizing alteration of particle-size distribution, moisture condition, and other key properties. astm e56219 pdf
: To provide a statistically valid estimate of the volume fraction of an identifiable phase or constituent in a metallographic specimen. Emma's team reported their findings to the supplier,
ASTM E562-19 remains a valuable standard for manual phase volume fraction estimation. While automatic image analysis has grown in capability, the manual point-count method offers a robust, unbiased, and statistically sound alternative when automation is impractical or unreliable. Its continued inclusion in the ASTM Volume 03.01 (Metallography) reflects its enduring relevance in materials characterization. ASTM E562-19 is a standard published by ASTM
ASTM E562-19 is widely used in:
Points that fall entirely within the phase of interest are counted as 1.0 , while points falling exactly on a phase boundary are counted as 0.5 .
ASTM E562-19 outlines a systematic manual point-count procedure to determine the volume fraction of microstructural constituents in materials, utilizing a grid-based overlay for statistical estimation. This standard, which supports accurate phase identification, provides a 95% confidence interval for measuring constituent ratios in metals, ceramics, and composites. Purchase the official ASTM E562-19 PDF from ASTM International ASTM International