Aerospace research accelerated by laser vibration testing
Test engineers need high-quality tools and simulation engineers need precise measurement data. Such data is necessary in order to carry out critical tests to meet the demands of uncompromising safety, reduced fuel consumption through the use of composite materials and drive concepts, as well as new materials and CAE-supported development processes. That’s why you should reach for Polytec tools when carrying out important applications in the field of dynamic measuring technology. Both turbine durability validation and the development of new NDT methods or a classic modal test will likewise benefit from vibration sensors that supply reliable results in a non-intrusive way. These can even be achieved in a vacuum, over long distances and under all temperature conditions. You can determine transfer functions, deflection shapes and strain distribution quickly and without any need for the time-consuming process of instrumentation.More about this area of application
Introduction of 3D scanning vibrometry
Reliably handling demanding acoustic tasks
Laser vibrometry enables non-contact vibration measurement and makes this technology the perfect tool for your audio and ultrasonic studies. Vibrometers are indispensable tools for you when you’re designing loudspeakers and identifying disturbing membrane resonances. Vibrometer measurements provide an experimental basis for challenging acoustic problems, such as predicting the structural-acoustic response, acoustic imaging, anti-sound and much more besides. Laser vibrometer measurements also prove beneficial in microphone, cell phone and hearing aid development.
Most manufacturers of ultrasonic devices for industrial and medical use already place their trust in Polytec products for their research and development processes too. Its ability to reliably measure both actuators’ and sensors’ vibrational characteristics makes laser vibrometry an indispensable tool for FE modeling, optimization and troubleshooting.More about this area of application
Optical measurements that drive progress
Nowadays, automotive development is driven by the need for ever higher efficiency levels. Lightweight construction, electrification and downsizing are the characterizing “factors” in industry. Simulation tools bypass entire development cycles in this regard. Valid tests and the measuring technology used there bridge the gap between the virtual world (simulation) and the real world of prototypes.
The Polytec vibrometers’ optical vibration measurement technology guarantees non-intrusive data in a quality that satisfies the high simulation and efficiency standards encountered in everyday testing operations – even for lightweight structures. You can put Polytec’s measuring technology to versatile use: on the test bench, in the modal test, in vehicle acoustics or in sensor development. Even if everything doesn’t always go to plan, with the Polytec vibrometers you can always rest assured that you’ll get reliable decision capable data and quick problem visualization even during troubleshooting operations. So you’ll always achieve the outcome you’re after in the end.More about this area of application
Analyzing vibration and acoustics of natural processes
For researchers and developers from biology, medicine, medical technology and many other specialist fields, Polytec’s vibrometers are indispensable tools for investigating natural dynamic processes and optimizing technical products.
In biology, optical vibrometry helps to understand biological and physiological processes in a non-contact and reactionless way as well as to conduct research into various species’ hearing mechanisms. The technology is economically relevant too – in that it can be used to determine fruit ripeness or to enable completely chemical-free pest control for crops.
In medical technology, vibrometers are used both to record physiological processes and to investigate sound conduction and transduction from the eardrum to the inner ear for optimizing measurement and diagnostic methods, as well as for developing more effective and reliable healthcare products.More about this area of application
Store data the secure way
Laser Doppler vibrometers, which are used to measure a multitude of the overall hard disk drive system’s and its sub-components’ dynamic properties, have proven themselves to be indispensable tools when it comes to developing computer hard disk drives. The vibrational properties of the delicate mechatronic or microelectromechanical systems of the read/write heads including the actuators and suspension can be determined in experiments only when using non-contact optical measurement methods such as laser vibrometry. Only methods such as this have the required resolution and dynamics to carry out modal and resonance tests for the purpose of determining and optimizing dynamic parameters and usage conditions. Laser vibrometers also help you to identify the causes of noise in the drive system during noise tests, so that you can then purposefully implement constructive measures to reduce the noise being emitted to below the perception threshold. Vibrometers have also proven to be highly efficient sensors for monitoring quality in production.More about this area of application
Testing the quality of semiconductors and solar technology components
Do you work with innovative technologies and materials in the solar, semiconductor and electronics industries? Do you develop, make or test printed circuits, PCBs, electronic modules, electronic assemblies or PV modules? Are you striving to create smaller, more powerful and extremely reliable structural elements, components or modules? Yes? Then you need powerful measurement and testing methods for developing and ensuring the quality of your products and components and for monitoring them in the long term.
Components’ dynamic behaviour in particular, is a key quality indicator and allows the user to draw conclusions as to both the reliability and the service life of their electronic or photovoltaic assemblies and products. In this situation, Polytec’s optical vibration sensors with laser vibrometers are indispensable tools for you – whether you’re carrying out dynamic tests in research, design and industrial testing, or monitoring processes such as the bond process when manufacturing power electronics.More about this area of application
Reliable sensors for industrial quality assurance
In the consumer and capital goods industries, both product optimization and process optimization play a vital role when it comes to economic success. Quality assurance in production therefore relies on fast, automated and robust measurement instrumentation.
Acoustic quality control is a versatile, non-destructive method designed to ensure both the quality and reliability of products and production processes. It supplies information about the vibration behavior and thus informs you about impermissible deviations in the production process and the condition of test objects.
Polytec offers you the right solutions for this: sensors, software and hardware modules. The laser vibrometers are robust and reliable sensors for complete parts control in final production testing. The major benefits for you lie in the fact that they are non-contact, are set up to suit industrial processes and can be put to flexible use. Polytec vibration sensors are compatible and easy to integrate into complete test stations for production testing. The diagnosis software QuickCheck automatically measures and evaluates the measurement data for reliable pass-fail decisions and classification of parts.More about this area of application
Materials research and testing
Around the world, scientists at hundreds of universities and research centers for engineering, materials research, machine construction and many other specialist fields place their trust in instruments from Polytec. Laser vibrometry has proven its worth as an ideal tool for materials investigations – both for the measurement of structural dynamics and for the non-destructive detection and prevention of signs of fatigue. There are a wealth of applications in functional and long-term structural monitoring and in geological issues.More about this area of application
For efficient product development in micro- and nanotechnology
Precise, reliable and fast measuring technology for characterizing and monitoring the quality of devices is decisive to in developing and producing microsystems. This is all the more important since microsensors are increasingly taking over safety-related tasks too – placing high demands on reliability and functional safety. A robust design and high production precision play a key role in this regard.
Active microelectromechanical structural elements such as MEMS actuators or sensors need suitable optical measurement methods, since purely electrical characterization isn’t enough.
Polytec’s Micro System Analyzers are ideal for this. On the one hand, they enable determination of the surface topography with a high resolution and, on the other, they allow for precise characterization of the dynamic motion behaviour too. Dynamic measurement using laser Doppler vibrometry is characterized by a high frequency bandwidth and extremely good displacement amplitude resolution. This measuring technology even enables vibration measurements up to the high MHz range (and even the GHz range) – which is required for an ever-growing number of microtechnology applications.More about this area of application