Structural reliability test

Test Background

The connecting device needs to withstand vibration, shock, thermal cycling, and long-term fatigue stress during transportation, installation, and operation. Insufficient structural reliability may lead to serious failures such as weld cracking and joint loosening.

Test Introduction

The structural reliability test ensures the mechanical structural stability of the connecting device under complex working conditions through vibration and shock tests, thermal cycling, and life tests, combined with weld quality inspection.

Testing Objectives

Verify the sealing and structural integrity after vibration and shock

Evaluate the fatigue impact of thermal cycling on the weld and materials

Ensure that the insertion and extraction life of the quick-connect fitting is ≥ 5000 times

Detect weld defects and stress concentration areas

Test Standards

T/CESA 1249.2-2023 Technical specification for connection systems

IEC 60068-2 Vibration and shock standards

ISO 19879 Hydraulic pipeline fatigue test

GB/T 3323 Non-destructive testing of welds

Applicable Products/Fields

Suitable for liquid-cooled cabinets, water dividers, bellows, joint assemblies, etc.

Test Content

Vibration test: Random vibration from 5 to 2000 Hz, 20g

Shock test: Half-sine wave, 50g, 11ms

Thermal cycling test: Temperature cycling from -40°C to 85°C, 500 cycles

Insertion and extraction life test: A robot simulates 5000 times of insertion and extraction

Weld inspection: X-ray or ultrasonic flaw detection

Project Advantages

Capable of applying combined vibration and temperature stresses simultaneously

The insertion and extraction life testing supports simulation of hot-plugging under pressure

Provides weld quality rating and fatigue life evaluation

Laboratory Configuration

Electromagnetic vibration test system

Impact test table

High and low temperature alternating test chamber

Insertion and extraction life testing machine (maximum 500N)

Weld non-destructive testing equipment (X-ray/ultrasonic)

FAQ
Q: Why should the insertion and extraction life test be carried out under pressure? A: Hot-plugging under pressure is closer to the actual operation and maintenance scenario, which can verify the influence of internal pressure on the sealing structure and insertion and extraction force.