arrow_back_ios

Main Menu

See All Simulação e Análise See All DAQ See All Drivers API See All Utilitário See All Controle de vibração See All Calibração See All DAQ See All Portátil See All Industrial See All Analisadores de potência See All Condicionadores de sinal See All Acústica See All Tensão e Corrente See All Deslocamento See All Força See All Células de carga See All Multicomponente See All Pressão See All Deformação See All Strain Gauges See All Temperatura See All Inclinação See All Torque See All Vibração See All Acessórios See All Controladores See All Excitadores de medição See All Excitadores modais See All Amplificadores de potência See All Sistemas Shaker See All Soluções de teste See All Atuadores See All Motores de combustão See All Durabilidade See All eDrive See All Sensores de teste de produção See All Caixas de transmissão See All Turbo Charger See All Cursos de formação See All Acústica See All Monitorização de activos e processos See All Energia eléctrica See All Sensores personalizados See All NVH See All Sensores personalizados do OEM See All Vibração See All Integridade estrutural See All Transporte automotivo e terrestre
arrow_back_ios

Main Menu

See All nCode - Análise de Durabilidade e Fadiga See All ReliaSoft - Análise e gerenciamento de confiabilidade See All API See All Ruído do produto See All Ruído de passagem de veículos See All Electroacoustics See All Identificação da fonte de ruído See All Ruído ambiental See All O que é potência sonora e pressão sonora See All Certificação de ruído See All Teste de produção e garantia de qualidade See All Análise e Diagnóstico de Máquinas See All Monitoramento de integridade estrutural See All Teste de bateria See All Introdução à Medição de Energia Elétrica Durante Transitórios See All Diagrama de circuito equivalente do transformador | HBM See All Sensores OEM para a indústria agrícola See All Sensores OEM para aplicações robóticas e de torque See All Dinâmica estrutural See All Ensaio das propriedades dos materiais

Vibration Testing and Validation

By condensing a lifetime of stress and wear into a short period of time, vibration testing and validation can reveal hidden design weaknesses. Vibration testing helps manufacturers to ensure quality, reliability and durability of complete products and their components by providing insights into the inner world of vibration within products, machines and structures.

To ensure products can handle shocks and stresses within their service life, vibration testing comes into play. As an example, this applies to:

  • A mobile phone must be able to withstand bouncing around in a backpack as well as being dropped on the floor several times. If it cannot cope with this general day-to-day use, warranty costs will explode for the manufacturer resulting in a real risk of brand deterioration and of customers looking elsewhere the next time they buy a new phone.
  • A satellite has to be able to survive the excessive vibrations from being launched into space. If it is faulty, the investment in the development and building of the satellite may be jeopardized.

In order to ensure that the products customers receive are intact and fully-functional, it is essential that they can survive the journey from when they are boxed at the factory until they arrive at the end destination. Moreover, beyond merely withstanding short-term physical forces, developers need to ensure that their products will maintain the integrity and quality that represents the brand in the longer term.

Product qualification and verification is done through extensive simulation in the development phases, but simulation is not enough. It is also necessary to do physical testing on prototypes and end-of-line items, both to validate simulated results and to prove product durability to customers.

 

 

Ensuring product quality

 

Vibration tests can reveal design weaknesses that would only become apparent during transport, deployment and use – like a helmet hitting the ground. Some of these tests, such as buzz, squeak and rattle (BSR) on vehicle interiors, can also detect the development of unwanted noise.

For environmental testing such as highly accelerated lifetime testing (HALT) and highly accelerated stress screening (HASS), it is necessary to combine vibration testing with environmental chambers to add the expansion stresses of rapid heating and cooling. These tests are typically conducted on industrial and electronic components and products, on medical equipment and on military hardware.

 

 

Vibration test profiles

 

Where do the actual vibration test profiles originate? Customers, end users or manufacturers who incorporate a component into an assembly, often define vibration test specifications and procedures themselves.

These are typically based on experience and knowledge of which design solutions work well and which don’t. Vibration testing can provide a more structured approach to understanding failure modes and defects that are caused by vibration.

 

 

Vibration testing standards

 

Many vibration testing profiles are defined by standards developed over many years. There are a lot of them and they are often dedicated to specific applications and products. Examples include DIN, ISO, BS, MIL, IEC and ASTM. The use of testing according to standards is especially the case for the aerospace and defence industries. These include MIL-STD-810, NATO STANAGs and AS/EN9100.

Vibration testing system

Selecting a vibration test system

 

It is essential that your system is appropriate for the test – able to input the necessary vibration types and able to handle the forces generated when testing specific payloads. Above all, self-monitoring of resulting vibration levels is vital to ensure that your test object is not stressed more than necessary.

There are many ways of configuring systems to meet your testing requirements. If your requirements are not met by these specific suggestions, please explore the vibration testing equipment page or contact your local Brüel & Kjær sales representative to discuss your needs.