WeibPar - Weibull Distribution Parameter Estimation
WeibPar estimates Weibull parameters for time independent (fast fracture) specimen data and time dependent (dynamic fatigue) data. A graphical view of the specimen data and parameter estimates is provided. WeibPar was created with the design engineer in mind; however, the program is versatile and may be used for many other applications.

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WeibPar is in compliance with the methods outlined in the following standards:

ASTM C1239-07 Standard Practice for Reporting Uniaxial Strength Data and Estimating Weibull Distribution Parameters for Advanced Ceramics
ASTM C1368-06 Standard Test Method for Determination of Slow Crack Growth Parameters of Advanced Ceramics by Constant Stress-Rate Flexural Testing at Ambient Temperature
ISO 20501:2003 Fine Ceramics (Advanced Ceramics, Advanced Technical Ceramics) - Weibull Statistics for Strength Data

Connecticut Reserve Technologies, Inc. began development of WeibPar in 1998 with in house funding along with specific upgrades funded by the U.S. Department of Energy (DoE), Oak Ridge National Laboratory (ORNL), Lawrence Livermore National Laboratory (LLNL), and the ARMY Research Laboratory (ARL). These agencies advocate the Weibull distribution for use in characterizing the failure behavior of brittle material systems.

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