Vibration M easurem ents of the Test Section                          . 31
    Experim ental Set-up                                                . 31
    T h e o retic al M o d el                                           . 3 3
    Results and Conclusions . 36
4 IN TERFA CE EDU  CTION  U SIN G LIGH T SHEET                          . 44
  Experim ental Set-up . 44
    P ro c e d u re                                                     . 4 5
    Interface D etection                                                . 47
    O u tlier R eje ctio n                                              . 4 9
    Transform ation and Calibration                                     . 51
    Interface Slope Calculation                                         . 54
CON  CLU SION S AN D FU TURE W ORK                                      . 56

APPENDIX

TUNNEL   OPERATION   PROCED  URE                                        . 57

R E F E R E N C E S                                                     . 6 0

BIOGRAPH   ICAL SKETCH                                                  . 62





























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