ISO 20501:2019 pdf download – Fine ceramics (advanced ceramics, advanced technical ceramics) — Weibull statistics for strength data. 5.2 This document provides two approaches, method A and method B, which are appropriate for different purposes. Method A provides a simple analysis for circumstances in which the nature of strength-defining flaws is either known or assumed to be from a single population. Fractography to identify and group test items with given flaw types is thus not required. This method is suitable for use for simple material screening. Method B provides an analysis for the general case in which competing flaw populations...