GB/T 16826-2023Electro-hydraulic servo universal testing machines (English PDF)

1 Scope

This document specifies the main parameter series, technical requirements, inspection methods, inspection rules, marking and packaging of electro-hydraulic servo universal testing machines:

content:

This document is applicable to electro-hydraulic servo universal testers with a maximum test force of no more than 10MN for testing the mechanical properties of metallic and non-metallic materials:

Design, manufacture and inspection of testing machines (hereinafter referred to as testing machines): The design, manufacture and inspection of electro-hydraulic servo pressure testing machines shall be used with reference:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations

For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document:

GB/T 2611-2022 General technical requirements for testing machines

GB/T 13634 Calibration of standard force measuring instrument for inspection of uniaxial testing machines for metallic materials

GB/T 22066-2008 Evaluation of computer data acquisition systems for static uniaxial testing machines

GB/T 36416:1 Testing machine vocabulary Part 1: Material testing machines

JB/T 6146-2020 Extensometer technical conditions

JB/T 6147-2007 Technical requirements for testing machine packaging, packaging markings, storage and transportation

3 Terms, definitions and symbols

3:1 Terms and definitions

The terms and definitions defined in GB/T 36416:1 apply to this document:

3:2 Symbols

The following symbols apply to this document: See Table 1 for details:

Table 1 Symbols, units and descriptions

Symbol unit description a % Relative resolution of the force indicating device ae % relative resolution of the extensometer system b % Indication repeatability of the force measuring system

D mm Displacement value indicated by a dial indicator (or dial indicator, steel ruler) for displacement detection

Di mm is the arithmetic mean of the three indications of the displacement indicating device among three measurements of the same displacement: