Vibration analysis - final report

November 2023 - Shortening the form of this report to omit the need for doing the finite element analysis in Fusion 360

Prepare a well-organized report about the 2-4 vibration modes you studied with the laser holography system. Include the following items:

• Your starting plate. A photograph or diagram that you make from your Fusion 360 drawing of your plate. There should be some indication on your image / diagram of where you clamped the plate.

  At least one dimension of the plate should be given to get an idea of the size of the plate. Write a brief description of the plate including the material (alunimum) and the thickness.

• Vibration modes. The images you gathered from the laser holography set up of the 2-4 vibration modes of your plate and with the frequency for each vibration mode clearly labelled.
• Your modified plate. Provide a similar labelled image or diagram of your modified plate.
• Predictions. List your predictions of the effects on the various modes including your reasoning as much as possible.
• Vibration modes. For your modified plate, you have tried to find a new vibration mode that seems to be related to each of the 2-4 modes you found on your initial plate. Include the laser holography pictures of each of these modes, clearly labelled with the frequency
• Discussion. Can you see any pattern to how the modes changed from your original plate to the modified plate? Did some of the modes shift more / less than the others? Can you guess about why one mode shifted more than another in frequency?