What is IEC/EN/AS 60068-26 vibration?

IEC/EN/AS 60068-26 is an international standard that provides guidelines for testing the ability of equipment to withstand mechanical vibrations. This standard defines the various types of vibrations, their characteristics, and the test methods used to simulate these vibrations. The goal is to ensure that equipment can function properly and reliably in real-world environments where vibrations exist.

The importance of vibration testing

Vibration testing is crucial in many industries, including aerospace, automotive, electronics, and telecommunications. Equipment in these industries often operates in environments with continuous vibrations, such as vehicles, airplanes, or industrial machinery. It is essential to assess the durability and performance of equipment under such conditions to avoid premature failures, malfunctions, or safety hazards.

Vibration testing helps identify potential issues early in the design and manufacturing processes, allowing engineers to make necessary modifications and improvements. By subjecting equipment to controlled vibrations, manufacturers can evaluate its structural integrity, component reliability, and overall performance. This testing also aids in product development, quality control, and compliance with industry regulations and standards.

The different types of vibrations

IEC/EN/AS 60068-26 categorizes vibrations into three main types: sinusoidal vibration, random vibration, and broad-band random vibration.

Sinusoidal vibration refers to vibrations with a single frequency and amplitude. This type of vibration is commonly used to test if equipment can withstand specific harmonic frequencies commonly present in certain environments. For example, electronic devices operating near rotating machinery may be susceptible to vibrations caused by the machinery's rotation.

Random vibration, on the other hand, consists of vibrations with a wide range of frequencies occurring simultaneously. This type of vibration simulates real-world conditions more accurately, as equipment may encounter vibrations from various sources simultaneously. Random vibration testing helps evaluate a product's response to harmonic and non-harmonic frequencies, providing a more comprehensive assessment of its resilience.

Broad-band random vibration combines both sinusoidal and random vibrations. This type of vibration tests the equipment's ability to withstand dynamic loads caused by multiple frequencies occurring simultaneously.

Vibration test methods

IEC/EN/AS 60068-26 provides several test methods for simulating vibrations, including the use of shakers, electrodynamic exciters, and mechanical devices. These methods involve applying controlled vibrations with specified frequency ranges, acceleration levels, and duration. Vibration tests can be conducted in multiple axes (x, y, z), or by using simultaneous multi-axis testing to replicate complex vibration patterns experienced by the equipment in real-world scenarios.

The test results are typically recorded and analyzed, allowing engineers to assess the equipment's performance throughout different testing profiles. Any deviations, failures, or abnormal behaviors can be investigated further to identify potential design flaws or weaknesses that may require remedial measures.

In conclusion, IEC/EN/AS 60068-26 vibration testing ensures that equipment can withstand mechanical vibrations encountered in various industries. By subjecting products to controlled vibrations, manufacturers can evaluate their durability, reliability, and performance, ultimately leading to improved product quality and safety.