The research reported in this thesis is concerned with the response of mechanical structures to the excitation of acoustic fields. Both the vibration of the structure itself (sonic boom studies) and the secondary sound field which this vibration produces (transmission loss studies) are investigated. In measuring the airborne transmission loss of a high loss partition an important limitation of the University's experimental suite was discovered. Attempts at an indirect measurement of transmission loss using vibration transducers illustrate a fallacious assumption of most transmission loss theories. These findings impose a considerable limitation upon the accelerometer method of transmission loss measurement. The study of structural vibration was extended to sonic boom response. In particular the effects of a cavity behind a panel upon the panel's dynamic properties is studied both experimentally and theoretically. This model is comparable with a window-room system and so is of current interest in the evaluation of the possibility of sonic boom damage.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:529183 |
| Date | January 1969 |
| Creators | Hudson, Roderick Reginald |
| Publisher | University of Liverpool |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
Page generated in 0.0025 seconds