Vibration measurements are commonly considered to be a sound indicator of a machine’s overall health state (global monitoring).The general principle behind using vibration data is that when faults start to develop, the system dynamics change, which results in different vibration patterns from those observed at the healthy state of the system monitored.
An accelerometer is a device that measures the vibration, or acceleration of motion of a structure. They measure in meters per second squared (m/s2) or in G-forces (g). The force caused by vibration or an acceleration (change in motion) causes the mass to "squeeze" the piezoelectric material which produces an electrical charge that is proportional to the force exerted upon it. Since the charge is proportional to the force, and the mass is a constant, then the charge is also proportional to the acceleration. Accelerometers are useful for sensing vibrations in systems or for orientation applications.
Sine Vibration Testing may be considered as the most basic vibration testing method used. This type of vibration testing requires less complex parameters compare to other type of vibration testing. Knowing the nature of sinusoidal signal, makes this type of vibration testing easier to understand and to get familiar with. Though, easier to understand does not make it less important compare to other type of vibration testing. Sine vibration testing may still be at the top rank when we are thinking of dynamic characteristic measurement.
For your vibration qualification tests, the unique combination of Simcenter SCADAS™ hardware, Simcenter Testlab™ software and ETS Solutions expertise in vibration testing, delivers outstanding performance for all standard and advanced testing requirements. This includes tests based on tailored profiles, interfaces with test cells or climatic chambers, and tests based on newer techniques such as the military standard (MIL-STD) 527 method.
This booklet will provide some insights regarding digital signal processing, on what the hardware and software are doing during acquisition process and also data post-processing. This booklet may provide some ideas also on what kind of small details that we may want to pay attention before making a decision to purchase a data acquisition system together with data post-processing software. Below are some details covered by this booklet.
In such industry that is facing tough market competition like automotive industry, having product durability issue during prototype testing and validation stage will be quite challenging, or sometime even quite frustrating. Especially when you are the testing engineer or project manager that has to ensure that all prototype testing and validation is done within the schedule.
The simulation and CAE in medical devices is very important as it can save millions of dollars for the industry, e.g. by reducing the number of required benchtop test, clinical trials, or by accelerating the regulatory approval process. The FDA and other regulatory agencies worldwide are supporting the collaboration effort in the simulation field driven by industry.
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