TS EN 61649

TS EN 61649 is the Turkish listing of the standard for Weibull analysis, a statistical approach used to interpret data that follow a Weibull distribution. It focuses on continuous variables such as time to failure, cycles to failure, and mechanical stress, which are commonly encountered in reliability and strength assessments. In practical terms, it helps turn sample data into an estimate of how a population is likely to perform.

What Weibull analysis is used for

Weibull analysis is one of the core tools in reliability engineering for examining how failure behavior changes over time. In general technical use, the method can describe early failures, random failures, and wear-out tendencies, depending on the shape of the data. The distribution parameters represent the form and scale of the results, so the analysis does more than produce a single average: it shows how spread out the failures are and where they tend to concentrate.

Data types covered by this document

• Time-to-failure data
• Cycles-to-failure data from repeated loading or use
• Mechanical stress or strength measurements
• Random samples collected under test conditions or in service
• Statistical estimation of population reliability performance

Based on IEC 61649:2008, this edition adds methods for both analytical and graphical solutions. That makes the standard relevant not only as a conceptual guide to Weibull-based interpretation, but also as a practical framework for solving the analysis in more than one way. For users in reliability, quality, and durability testing, it provides a common statistical basis for comparing and assessing performance data.