Does anyone on this forum know of any accelerometer manufacturers that have tested Belzona 1111 for installation of mounting pucks used for installation of accelerometers. Or, perhaps any other source for this kind of information. I want to make sure the high frequency performance of the sensor...
Anybody care to comment on their experience using the ARTeMIS Operational Modal Analysis system? I'm considering it. Performance? Support? Any feedback would be helpful. Thanks in advance.
http://www.machinerywatch.com
I will be doing some sound and vibration work on horse trailers soon to compare and contrast the effects of different construction methods. Can any of you NVH guys recommend an appropriate microphone for such an application? I appreciate your help.
http://www.machinerywatch.com
Is there a way to get a laptop or tablet PC to startup at predetermined times of the day, run a program and then shutdown again?
Skip Hartman
http://www.machinerywatch.com
Hi,
I have recorded an encoder signal from a rotating machine. It is captured as a .WAV file. Is there a signal processing software available to "demodulate" the signal? I am interested in the torsional vibration of this machine's shaft. The encoder signal should contain this information as...
I have been collecting vibration data on a paper machine press section that has abnormally high amplitudes at around 28 Hz. It is believed to be a resonant condition. The vibration sensors are accelerometers. The sample rate is 320 samples/second. This yields a 0-125 Hz FFT. When I record...
I positioned a photocell speed sensor, that generates a TTL signal, to read the passing vanes of a cooling fan on an engine driven generator. The speed was 3600 RPM (60 Hz). There were 14 vanes on the fan. I ran the signal to an FFT analyzer. The FFT is 0-1000 Hz with 3200 FFT lines.
The...
I am working on adding capability to an existing hydro-turbine monitoring system. Primarily it is using vibration sensors, both accelerometers and eddy current (proximity) probes. The owner wants to add cavitation detection. I am familiar with the audible sounds pumps make when they cavitate...
I have been testing a V6 (4.2L) natural gas fuel, spark ignition, emergency generator running at 3600 RPM. The 1X RPM vibration amplitudes at all load conditions approach 1 inch per second on the generator bearing (spectrum peak). There is only 1 generator bearing on the outboard end of the...
Long distance runners are plagued with stress fractures in the bones of their feet due to the constant, repetitive "impact tests" their feet are subjected to with each step. Each step produces an impact which excites the natural frequencies of the bones. The constant excitation of...
I am working on a project to monitor the structural vibration of a hydro electric dam. Sensors are located on the dam and the penstocks which carry water to the turbines. The purpose is to identify changes in the structural response of the dam rather than condition monitoring of the machinery...
