By harnessing vibrations, we gain great insight into the inner world of products, machines and structures.
Vibration analysis is used throughout the world in industries ranging from aerospace and defence, to the development of the latest smartphones. By harnessing vibrations, we can gain great insight into the inner world of products, machines, and structures.
Vibration = material stress
As vibrations move and shake objects, they stress their materials and construction. So, vibration testing can reveal how likely a product is to fail in real life and how much abuse it can withstand. Vibrations can indicate weak points in a product, demonstrate how much force it takes to break it, or simulate the product’s lifetime in just a matter of hours.
“Listening” to structural dynamics
The inner world of structures, such as automotive components, is a vital place to investigate vibrations – to understand how parts will respond to forces in the real world. With gentle vibration excitation of a structure, we can ‘listen’ to discover the inherent structural dynamics that come from its materials and its construction. These are the properties that will, for example, produce noise and vibration in a vehicle or create weak points in an aircraft.
Gaining practical knowledge
Even without ‘exciting’ a product, we can learn about it by ‘listening’ to vibrations. Vibration analysis can show us how well balanced an automotive brake disc is: whether it’s good enough to be put on a car and trusted to stop it in an emergency. Measuring the vibrations generated during the operation of a product – from a wind turbine blade to a vehicle gearbox – can reveal issues within it and locate their origins.
Whether you want to generate external vibrations to test product integrity, or to analyze and engineer the vibrations your products themselves make, Brüel & Kjær can provide a system, training and service – from vibration exciters to data acquisition and analysis.
Vibration testing and validation
By condensing a lifetime of stress and wear into a short period of time, vibration tests can reveal hidden design weaknesses.
All structures are subject to physical forces that affect their performance. They must be resilient enough without the need for costly over-engineering.
Machine analysis and diagnostics
Noise and vibration aren’t just annoying; they represent energy emissions that indicate inefficiency in machinery