Significance and Use

Continuous fiber-reinforced ceramic composites are candidate materials for structural applications requiring high degrees of wear and corrosion resistance, and damage tolerance at high temperatures.

Shear tests provide information on the strength and deformation of materials under shear stresses.

This test method may be used for material development, material comparison, quality assurance, characterization, and design data generation.

For quality control purposes, results derived from standardized shear test specimens may be considered indicative of the response of the material from which they were taken for given primary processing conditions and post-processing heat treatments.

1. Scope

1.1 This test method covers the determination of shear strength of continuous fiber-reinforced ceramic composites (CFCCs) at ambient temperature. The test methods addressed are ( 1 ) the compression of a double-notched test specimen to determine interlaminar shear strength and ( 2 ) the Iosipescu test method to determine the shear strength in any one of the material planes of laminated composites. Test specimen fabrication methods, testing modes (load or displacement control), testing rates (load rate or displacement rate), data collection, and reporting procedures are addressed.

1.2 This test method is used for testing advanced ceramic or glass matrix composites with continuous fiber reinforcement having uni-directional (1-D) or bi-directional (2-D) fiber architecture. This test method does not address composites with (3-D) fiber architecture or discontinuous fiber-reinforced, whisker-reinforced, or particulate-reinforced ceramics.

1.3 The values stated in SI units are to be regarded as the standard and are in accordance with .

1.4 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. Specific hazard statements are given in 8.1 and 8.2.

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

D695 Test Method for Compressive Properties of Rigid Plastics

D3846 Test Method for In-Plane Shear Strength of Reinforced Plastics

D3878 Terminology for Composite Materials

D5379/D5379M Test Method for Shear Properties of Composite Materials by the V-Notched Beam Method

E4 Practices for Force Verification of Testing Machines

E6 Terminology Relating to Methods of Mechanical Testing

E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process

E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

E337 Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)

E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

Keywords

composite; compression; continuous fiber-reinforced ceramic composite (CFCC); in-plane; interlaminar; Iosipescu; shear; shear strength; Shear testing; Advanced ceramics; Ambient temperature; Ceramic composites; CFCC (continuous fiber-reinforced ceramic composite); Compression testing--advanced ceramics; Continuous fiber-reinforced ceramic composites (CFCC); In-plane shear properties/testing; Interlaminar composites; Iosipescu;

ICS Code

ICS Number Code 81.060.99 (Other standards related to ceramics); 81.060.30 (Advanced ceramics)

DOI: 10.1520/C1292-10

ASTM International is a member of CrossRef.

ASTM C1292