I have an ARINC 717 file in binary format. I know the Syncwords, there are Teledyne format. I have all the parameter addresses both analog and binary. I am using Matlab to open the binary file by specifying that its a 12 bit word. The sync words for each subframe are 4018 words apart, it should...
I am looking for information on Vibration Based Condition Monitoring of CNC machines. What are the most common maintenance issues with CNC machines and which of those can be detected using vibration?
I am trying to create a demo centrifugal pump to show increased vibration from cavitation. I have a pump running at 2900 RPM and a 2 inch suction side pipe and 2 inch discharge pipe with a increaser. The pump is a Kirloskar DB 32/13 End Suction Pump.
I can get cavitation by closing the suction...
I am trying to test a beam (132 lbs weight) under free boundary conditions using an electrodynamic shaker (rated 110lbf sine). I connected the shaker, which is attached to two cinder blocks, to the beam using a long nylon stinger and a force transducer. The problem I have is that when I input a...
I have done some testing using electrodynamic shakers, mostly sine dwell testing but I want to learn advanced stuff with shakers (Random vibration, multiple shaker testing etc). I wanted your opinion about the Fundamentals of Electrodynamic Vibration Test Systems course offered by ITES...
I am trying to decide between I-DEAS Pro, ME'scopeVES, ICATS MODENT, SDRL X-Modal II modal analysis packages. Please let me know your experience with any of these packages..
Hi,
I have to test something next week and I called Modalshop for renting at short sledge impact hammer and they are out. Is there any other place that I can rent a 5lb impact hammer?
I have a FE model for a deck, I obtained the displacement response at location B due to a unit sinusoidal load over a frequency range at any input location A. Can this response I obtained be called as a Frequency Response Function?
I have modelled a deck in Ansys. I was able get the frequncies and mode shapes, but I want to get the frequency response functions for the deck. How do I do that?
I have modeled a composite deck and extracted the frequencies and mode shapes. I wanted to know how to get the frequency response functions, so that I can correlate them to the experimental ones?
I have different FRFs for a 3DOF system. I want to calculate the response at 3rd DOF due to a sinusoidal input at the 2nd DOF. How do go about doing the calculation?
I am trying to test a steel I-Beam on simple supports, I've done a swept sine test using a shaker and accelerometer and calculated (Half-power method)the damping ratio to be 2.1%. I think is too high a number for an steel beam, my guess is it should be less than 1/2%. My question is could my...
