Reliability testing of electronic device vibration

Reliability testing of electronic device vibrationBy applying specific frequencies and amplitudes of vibration through professional equipment, simulating the vibration stress in actual product scenarios, observing whether the product has faults, damages, or performance degradation, and evaluating the product's anti vibration ability.

Why do we need to conduct vibration tests?

Verify product reliability: Ensure that the product can function properly in a vibrating environment and avoid failure during use.

Identify potential defects: Expose weak links in design, materials, or processes in advance (such as loose parts, structural cracking).

Compliant with industry standards: Most industries have mandatory or recommended vibration standards that require testing to meet market standards.

The practical use of vibration testing

Evaluate tolerance: Determine the vibration limit that the product can withstand and clarify the scope of use.

Optimize product design: Based on the problems discovered during testing, improve the structure, reinforce components, or select materials that are more resistant to vibration.

Ensure safe use: Especially for core equipment, avoid faults caused by vibration that may lead to safety accidents.

Main application industries

Electronic and electrical industry: mobile phones, computers, home appliances, etc., to cope with transportation bumps and slight vibrations during use.

Automotive industry: whole vehicle and components (engine, dashboard), simulating road vibrations during driving.

Aerospace industry: satellite, aircraft components, resistant to vibration environments during launch and flight.

Medical industry: Medical devices (such as ultrasound machines and monitors) ensure stability during clinical use.

Rail transit industry: components for high-speed trains and subways to cope with continuous vibrations during track operation.

Reference standard for vibration test:

Electronic and electrical industry

IEC 60068-2-6 (sinusoidal vibration):frequency10-2000Hz， Simulate steady-state vibration during equipment use/transportation, suitable for household appliances, consumer electronics, and electronic components

ISTA 2A/3A (Transportation Packaging Vibration): Random vibration+impact combination, simulating express delivery and logistics transportation environments, and verifying the anti vibration of packaging for electronic devices

automotive industry

ISO 16750-3 (Road Vehicles): Divided into sinusoidal (10-2000Hz) and random vibrations, suitable for engine, dashboard, headlights and other components, and conforms to the vibration of the driving road surface

GB/T 28046.3 (National Standard Equivalent): Consistent with ISO 16750-3, applicable to domestic automotive and parts enterprises, and meets mandatory certification requirements

Reliability testing of electronic device vibrationCommon Parameters

1. Sinusoidal vibration (operating environment)

Frequency range: 10-2000Hz

Amplitude/Acceleration: Displacement below 5Hz 1.5mm (peak to peak), Acceleration above 5Hz 10m/s ² (effective value)

Sweep rate: 1oct/min (frequency doubling per minute)

Cycle times: 3 up and 3 down frequency scans, for a total of 6 cycles

Qualification assessment:

① The appearance is free of cracks, parts detachment, and loose interfaces;

② The core functions (startup, communication, display, etc.) are normal and there is no performance degradation

2. Random vibration (transportation environment)

Frequency range: 10-500Hz

Power Spectral Density (PSD): 0.04g ²/Hz (10-200Hz), 0.01g ²/Hz (200-500Hz)

Test duration: 30 minutes in each direction (X/Y/Z axis), for a total of 90 minutes

Qualification assessment:

① The appearance is undamaged and the packaging is not deformed;

② The device has complete functionality and no faults caused by vibration (such as automatic shutdown, signal interruption)