In today’s business landscape, in order to survive this COVID-19 situation, plant owners/operators are looking for ways to change how they work. They are looking at the latest form of compact-equipment technology: remote control. For example, do you know what do bicycle helmets, toilet seats, and military drones have in common? Well, all three can be better and easier to use using remote control technology.
If our product is part of vital system in automotive where development time is getting shorter and crucial, or part of vital system in aerospace where prototype cost is relatively expensive and where safety has become very big issue, then having a vibration testing system may be considered as vital investment.
Remote monitoring for health of the machines has been developed for many years. Thanks to the rapid development of Information and Communication Technology (ICT), the health condition of rotating machinery is allowed to be monitored and analysed remotely from miles away, and even from our home. Not just remotely, the monitoring can even be done continuously.
National Aeronautics and Space Administration (NASA) is one of the most well-known aerospace agencies in the world. Therefore, NASA standards are also used as reference for testing laboratory to run testing related to component or sub-system of a spacecraft. NASA-STD-7002B is part of NASA standard that provides a standard set of flight hardware test requirements.
The global population of Electric Vehicle have been significantly increased within the latest few years. All major automakers recognize that the shift from fossil-fueled cars to EV is inevitable, and are investing accordingly. BATTERY, as one of the most CRITICAL part of electric vehicle is also having significant development period in order to fulfill the requirement from Electric Vehicle manufacturer.
To run a vibration testing, we need to set our test specification at the vibration control software and let the vibration controller to control the rest. A feedback sensor will send feedback signal. And based on this feedback signal, vibration controller will adjust the drive signal to make the actual vibration signal aligned with the test specification. Looking at how this system works, it is clear that the vibration controller is playing a very important part to accuracy of the vibration testing.
While accelerometer is playing the role of feedback sensor at vibration testing system, then vibration controller can be considered as the "brain" of it. Vibration controller is the device that sending the "instruction" in the form of drive voltage during vibration testing, and also interpreting the feedback signal coming from the accelerometer.
When we have large size of rotating machinery, performing corrective or preventive maintenance may not be so easy anymore. Based on the periodicity of the data collection, machine health condition monitoring can be classified into below categories: 1. Periodical Monitoring; 2. Semi-Online Monitoring; 3. Real Time Monitoring
In order to be able to collect data from actual service environment, we will need at least two components: sensor/transducer and data acquisition/recording/logger system. Sensor will be responsible to convert the physical measurand into electrical signal (voltage, charge, capacitance, resistance) and that can be transferred and read by data acquisition system.
Like development of other test equipment, the development of climatic test chamber is also following the requirement of the test standard, both common international test standard and test standard specially developed by specific industry (electronics, automotive, defence, packaging, etc). Find out the requirement and Remember to share this with any friends or colleagues that will find it valuable.
When we have a relatively small size and simple shape of UUT, with a simple mounting pattern, simple product orientation and low frequency test range, it will not be so tough to design a good vibration test fixture. But when we start to see one or more of below characteristics, then likely we will find designing vibration test fixture to be very challenging.
While IEC6008-2 provides guidance for environmental test of electronic and electro-mechanical equipment, RTCA-DO-160E Section 4 provides standard temperature test conditions and applicable test procedures for airborne equipment. This test standard is applicable for determining the performance characteristic of airborne equipment at actual environmental condition during actual airborne operation.
What is a Vibration Test Fixture? Looking at its appearance, vibration test fixture is needed for mounting our Unit Under Test (UUT) to the Vibration Testing machine. Is that it? Unfortunately, not that so straight forward. For some engineer, vibration test fixture may be considered just like an adapter. As long as the UUT can be mounted to vibration machine platform, then it is good enough. But for test engineer with experience, designing a vibration test fixture may be quite challenging as well.
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