Interpretation of the standard system of testing machines: electronic, electro-hydraulic servo and dynamic and static universal testing machines

1. Overview of the complete machine standard system

Universal testing machines are mainly divided into three categories according to drive and control methods: electronic, electro-hydraulic servo, and electro-hydraulic servo dynamic and static types, which correspond to different load ranges and test scenarios:

2. GB/T 16491-2022 "Electronic Universal Testing Machine"

This standard will be released on December 30, 2022 and implemented on July 1, 2023, replacing GB/T 16491-2008.Core changes include:

• The accuracy level is divided into level 0.5 and level 1. The force value indication error of level 0.5 equipment is ≤±0.5%;

• Put forward systematic technical requirements for subsystems such as force measurement systems, displacement measurement, and extensometers;

• Emphasize the standardization of data collection and processing to ensure the comparability of test results.

The electronic universal testing machine is driven by a servo motor and has the advantages of precise speed control, low noise, and convenient maintenance. It is the main model for daily testing in the laboratory.

3. GB/T 16826-2023 "Electro-hydraulic Servo Universal Testing Machine"

This standard will be released on November 27, 2023 and implemented on June 1, 2024. It will replace GB/T 16826-2008 and is suitable for mechanical property testing of metallic and non-metallic materials with a maximum test force not greater than 10MN.

Electro-hydraulic servo technology controls hydraulic loading through a closed-loop servo valve. It has the characteristics of large load, strong rigidity and high control accuracy. It is the preferred solution for large-tonnage material testing and structural component testing.The standard stipulates the main parameter series, technical requirements, inspection methods, inspection rules, etc., providing the industry with a unified manufacturing and acceptance basis.

4. JB/T 8612-2026 "Electro-hydraulic Servo Dynamic and Static Universal Testing Machine"

As an industry standard, JB/T 8612-2026 will be released on June 1, 2026 and implemented on December 1, 2026.This standard covers the high-frequency fatigue testing capabilities of dynamic and static universal testing machines in addition to static tension and compression. It is suitable for fatigue life and durability verification of materials and structural parts under alternating loads. It is an important basis for reliability testing in aerospace, new energy vehicles, wind power and other fields.

5. Suggestions for selection

Demanders can refer to the following framework when selecting:

1. Identify test subjects: Material type, typical specimen size and expected strength, and estimate the maximum test force required;

2. Define test methods: Only static testing, or dynamic fatigue and multi-condition simulation are required;

3. Benchmark standard version: Confirm the latest standard number implemented by the purchased equipment to avoid "old standard" library machines;

4. Assess supporting capabilities: Whether the extensometer, displacement measurement, and fixture tooling meet the target test method;

5. Calculate comprehensive costs: Incorporate equipment accuracy, verification and calibration, and maintenance services into the full life cycle cost.

6. Products and services of Shandong Huayan Intelligent

Shandong Huayan Intelligent Equipment Group Co., Ltd. focuses on the above-mentioned standard system and provides electronic universal testing machines, electro-hydraulic servo universal testing machines and supporting testing solutions. It adheres to the product concept of "standard-based and data-based" and can provide users with integrated services from selection and customization to acceptance and maintenance.