MECH4305 - Vibration Measurements and Signal Processing Assignment

Assignment Task

Question

1. a) Plot the un-weighted one-third-octave band acceleration.

b) Plot one-third-octave band acceleration with frequency weighting applied.

c) Complete the table for VLF1, VLF2, VST1, VST2

d) Comment on the results in (a) – (c).

2. a) Plot the time series of the calibrated acceleration signals.

b) Describe the time series signals in part (a).

c) Plot the autocorrelation sequences of the calibrated acceleration signals.

d) Do the autocorrelation sequences plotted in part (c) suggest the signals contain a time repeating component? Why?

e) Plot the power spectral density (PSD) of the calibrated acceleration signals.

3. Describe the test setup and provide a sketch or labelled photo of the test subject.

In a paragraph, describe the test subject (or machine/structure), measurement conditions and the position and orientation of the phone during the measurements. Include a sketch (or labelled photo) of the t est subject showing the coordinate axes of the acceleration measurement.

a) Compare the timeseries of the acceleration signals measured under different conditions in the two datasets. Plot the x, y and z acceleration signals on separate subfigures.

b) Describe the measured acceleration signals and their properties in (a) and (b). How do the signals change when the measurement conditions are varied?

This MECH4305 - Engineering Assignment Help has been solved by our Engineering Experts at My Uni Papers. Our Assignment Writing Experts are efficient to provide a fresh solution to this question. We are serving more than 10000+ Students in Australia, UK & US by helping them to score HD in their academics. Our Experts are well trained to follow all marking rubrics & referencing style.