ASTM C1465-00
Historical Standard: ASTM C1465-00 Standard Test Method for Determination of Slow Crack Growth Parameters of Advanced Ceramics by Constant Stress-Rate Flexural Testing at Elevated Temperatures
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ASTM C1465
1. Scope
1.1 This test method covers the determination of slow crack growth (SCG) parameters of advanced ceramics by using constant stress-rate flexural testing in which flexural strength is determined as a function of applied stress rate in a given environment at elevated temperatures. The strength degradation exhibited with decreasing applied stress rate in a specified environment is the basis of this test method which enables the evaluation of slow crack growth parameters of a material.
Note 1This test method is frequently referred to as 'dynamic fatigue' testing (Refs () ) in which the term 'fatigue' is used interchangeably with the term 'slow crack growth.' To avoid possible confusion with the 'fatigue' phenomenon of a material which occurs exclusively under cyclic loading, as defined in Terminology E 1823, this test method uses the term 'constant stress-rate testing' rather than 'dynamic fatigue' testing.
Note 2In glass and ceramics technology, static tests of considerable duration are called 'static fatigue' tests, a type of test designated as stress-rupture (Terminology E 1823).
1.2 This test method is intended primarily to be used for negligible creep of test specimens, with specific limits on creep imposed in this test method.
1.3 This test method applies primarily to advanced ceramics that are macroscopically homogeneous and isotropic. This test method may also be applied to certain whisker- or particle-reinforced ceramics that exhibit macroscopically homogeneous behavior.
1.4 This test method is intended for use with various test environments such as air, vacuum, inert, and any other gaseous environments.
1.5 Values expressed in this standard test are in accordance with the International System of Units (SI) and Practice E 380.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
C1145 Terminology of Advanced Ceramics
C1211 Test Method for Flexural Strength of Advanced Ceramics at Elevated Temperatures
C1239 Practice for Reporting Uniaxial Strength Data and Estimating Weibull Distribution Parameters for Advanced Ceramics
C1322 Practice for Fractography and Characterization of Fracture Origins in Advanced Ceramics
C1368 Test Method for Determination of Slow Crack Growth Parameters of Advanced Ceramics by Constant Stress-Rate Strength Testing at Ambient Temperature
D1239 Test Method for Resistance of Plastic Films to Extraction by Chemicals
E4 Practices for Force Verification of Testing Machines
E6 Terminology Relating to Methods of Mechanical Testing
E220 Test Method for Calibration of Thermocouples By Comparison Techniques
E230 Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples
E337 Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)
E616 Terminology Relating to Fracture Testing (Discontinued 1996)
E1150 Definitions of Terms Relating to Fatigue
E1823 Terminology Relating to Fatigue and Fracture Testing
IEEE/ASTM SI 10 American National Standard for Use of the International System of Units (SI): The Modern Metric System
Keywords
advanced ceramics; constant stress-rate testing; elevated temperatures; flexural strength; flexural testing; four-point flexure; slow crack growth; slow crack growth parameters;
ICS Code
ICS Number Code 81.060.30 (Advanced ceramics)
DOI: 10.1520/C1465-00
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