UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

ASTM C1683

Standard Practice for Size Scaling of Tensile Strengths Using Weibull Statistics for Advanced Ceramics

inactive
Buy Now
Organization: ASTM
Publication Date: 1 December 2010
Status: inactive
Page Count: 18
ICS Code (Advanced ceramics): 81.060.30
scope:

This standard practice provides methodology to convert fracture strength parameters (primarily the mean strength and the Weibull characteristic strength) estimated from data obtained with one test geometry to strength parameters representing other test geometries. This practice addresses uniaxial strength data as well as some biaxial strength data. It may also be used for more complex geometries proved that the effective areas and effective volumes can be estimated. It is for the evaluation of Weibull probability distribution parameters for advanced ceramics that fail in a brittle fashion. Fig. 1 shows the typical variation of strength with size. The larger the specimen or component, the weaker it is likely to be.

As noted in Practice C1239, the failure strength of advanced ceramics is treated as a continuous random variable. A number of functions may be used to characterize the strength distribution of brittle ceramics, but the Weibull distribution is the most appropriate especially since it permits strength scaling for the size of specimens or component. Typically, a number of test specimens with well-defined geometry are broken under well-defined loading conditions. The force at which each test specimen fails is recorded and fracture strength calculated. The strength values are used to obtain Weibull parameter estimates associated with the underlying population distribution.

This standard is restricted to the assumption that the distribution underlying the failure strengths is the twoparameter Weibull distribution with size scaling. The practice also assumes that the flaw population is stable with time and that no slow crack growth occurs. 

This practice includes the following topics:

The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 

The values stated in SI units are in accordance with IEEE/ASTM SI 10. 

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Document History

December 1, 2010
Standard Practice for Size Scaling of Tensile Strengths Using Weibull Statistics for Advanced Ceramics
This standard practice provides methodology to convert fracture strength parameters (primarily the mean strength and the Weibull characteristic strength) estimated from data obtained with one test...
December 1, 2010
Standard Practice for Size Scaling of Tensile Strengths Using Weibull Statistics for Advanced Ceramics
This standard practice provides methodology to convert fracture strength parameters (primarily the mean strength and the Weibull characteristic strength) estimated from data obtained with one test...
ASTM C1683
December 1, 2010
Standard Practice for Size Scaling of Tensile Strengths Using Weibull Statistics for Advanced Ceramics
This standard practice provides methodology to convert fracture strength parameters (primarily the mean strength and the Weibull characteristic strength) estimated from data obtained with one test...
January 1, 2008
Standard Practice for Size Scaling of Tensile Strengths Using Weibull Statistics for Advanced Ceramics
This standard practice provides methodology to convert fracture strength parameters (primarily the mean strength and the Weibull characteristic strength) estimated from data obtained with one test...
January 1, 2008
Standard Practice for Size Scaling of Tensile Strengths Using Weibull Statistics for Advanced Ceramics
This standard practice provides methodology to convert fracture strength parameters (primarily the mean strength and the Weibull characteristic strength) estimated from data obtained with one test...

References

Advertisement