GB/T 4966-2022Test method for tensile strength of domestic ceramic materials (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.

This document replaces GB/T 4966-1985 "Method for Determination of Tensile Strength of Ceramics for Daily Use". Compared with GB/T 4966-1985, except for structure In addition to adjustments and editorial changes, the main technical changes are as follows.

--- Increased scope (see Chapter 1);

--- Added terms and definitions (see Chapter 3);

--- Changed the equipment (see Chapter 5, Chapter 2 of the 1985 edition);

--- Changed the sample preparation and requirements (see Chapter 6, Chapter 3 of the 1985 edition);

--- Changed the test procedure (see Chapter 7, Chapter 4 of the 1985 edition);

--- Changed the test data processing (see Chapter 8, Chapter 5 of the 1985 edition);

--- Changed the test report (see Chapter 9, Chapter 6 of the 1985 edition).

1 Scope

This document describes a method for the determination of the tensile strength at room temperature of sintered samples of ceramic materials for daily use.

This document is applicable to the detection of ceramic materials for daily use.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 5000 Terminology of Ceramics for Daily Use

3 Terms and Definitions

The following terms and definitions defined in GB/T 5000 apply to this document.

4 Principles

According to the theory of elasticity, two concentrated loads uniformly distributed along the length of the sample are applied in the diameter direction of the cylindrical sample in opposite directions.

On the radial plane bearing the load, there is a uniform tensile stress separated from the left and right perpendicular to the plane. With the gradual increase of this stress, the final Cause tensile fracture (see Figure 1).