ASTM C1495-16
Standard Test Method for Effect of Surface Grinding on Flexure Strength of Advanced Ceramics

Standard No.

ASTM C1495-16

Release Date

2016

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM C1495-16(2023)

Latest

ASTM C1495-16(2023)

Scope

5.1 Surface grinding can cause a significant decrease4 in the flexure strength of advanced ceramic materials. The magnitude of the loss in strength is determined by the grinding conditions and the response of the material. This test method can be used to obtain a detailed characterization of the relationship between grinding conditions and flexure strength for an advanced ceramic material. The effect on flexure strength of varying a single grinding parameter or several grinding parameters can be measured. The method may also be used to compare and rank different materials according to their response to one or more different grinding conditions. Results obtained by this method can be used to develop an optimum grinding process with respect to maximizing material removal rate for a specified flexure strength requirement. The test method can assist in the development of improved grinding-damage-tolerant ceramic materials. It may also be used for quality control purposes to monitor and assure the consistency of a grinding process in the fabrication of parts from advanced ceramic materials. The test method is applicable to grinding methods that generate a planar surface and is not directly applicable to grinding methods that produce non-planar surfaces such as cylindrical and centerless grinding.

1.1 This test method covers the determination of the effect of surface grinding on the flexure strength of advanced ceramics. Surface grinding of an advanced ceramic material can introduce microcracks and other changes in the near surface layer, generally referred to as damage (see Fig. 1 and Ref. (1)).2 Such damage can result in a change—most often a decrease—in flexure strength of the material. The degree of change in flexure strength is determined by both the grinding process and the response characteristics of the specific ceramic material. This method compares the flexure strength of an advanced ceramic material after application of a user-specified surface grinding process with the baseline flexure strength of the same material. The baseline flexure strength is obtained after application of a surface grinding process specified in this standard. The baseline flexure strength is expected to approximate closely the inherent strength of the material. The flexure strength is measured by means of ASTM flexure test methods.

1.2 Flexure test methods used to determine the effect of surface grinding are C1161 Test Method for Flexure Strength of Advanced Ceramics at Ambient Temperatures and C1211 Test Method for Flexure Strength of Advanced Ceramics at Elevated Temperatures.

1.3 Materials covered in this standard are those advanced ceramics that meet criteria specified in flexure testing standards C1161 and C1211.

1.4 The flexure test methods supporting this standard (C1161 and C1211) require test specimens that have a rectangular cross section, flat surfaces, and that are fabricated with specific......

ASTM C1495-16 Referenced Document

• ASTM C1145 Standard Terminology of Advanced Ceramics
• ASTM C1161 Standard Test Method for Flexural Strength of Advanced Ceramics at Ambient Temperature
• ASTM C1211 Standard Test Method for Flexural Strength of Advanced Ceramics at Elevated Temperatures
• ASTM C1239 Standard Practice for Reporting Uniaxial Strength Data and Estimating Weibull Distribution Parameters for Advanced Ceramics
• ASTM C1322 Standard Practice for Fractography and Characterization of Fracture Origins in Advanced Ceramics
• ASTM C1341 Standard Test Method for Flexural Properties of Continuous Fiber-Reinforced Advanced Ceramic Composites

ASTM C1495-16 history

• 2023 ASTM C1495-16(2023) Standard Test Method for Effect of Surface Grinding on Flexure Strength of Advanced Ceramics
• 2016 ASTM C1495-16 Standard Test Method for Effect of Surface Grinding on Flexure Strength of Advanced Ceramics
• 2007 ASTM C1495-07(2012) Standard Test Method for Effect of Surface Grinding on Flexure Strength of Advanced Ceramics
• 2007 ASTM C1495-07 Standard Test Method for Effect of Surface Grinding on Flexure Strength of Advanced Ceramics
• 2006 ASTM C1495-06 Standard Test Method for Effect of Surface Grinding on Flexure Strength of Advanced Ceramics
• 2001 ASTM C1495-01 Standard Test Method for Effect of Surface Grinding on Flexure Strength of Advanced Ceramics