A FIBRE-OPTIC DETECTION SYSTEM FOR LASER-ULTRASOUND LAMB-WAVE EXAMINATION OF DEFECTS IN THIN MATERIALS

References

• R. J. Dewhurst , R. He and Q. Shan , “ Defect visualization in carbon fibre composite using laser ultrasound ” Materials Evaluation , 8 , 935 – 940 ( 1993 ).
   Google Scholar
• M. Veidt and W. Sachse , “ Ultrasonic point–source/point–receiver measurements in thin specimens ”, J. Accoust. Soc. Am. , 96 , 2318 – 2326 ( 1994 ).
   Google Scholar
• W. Bottger , H. Schneider and W. Weingarten , “ Prototype EMAT system for tube inspection with guided ultrasonic waves ”, Nucl. Eng. Des. , 102 , 356 – 376 ( 1987 ).
   Google Scholar
• J. L. Rose and J.J. Ditri , “ Pulse-Echo and through transmission Lamb wave techniques for adhesive bond inspection ”. Brit. Int. NDT. , 34 , 591 – 594 ( 1992 ).
   Google Scholar
• D. E. Chimenti and A.H. Nayfeh , “ Lamb waves in fibrous composite laminates” , J. Appl. Phys. , 58 , 4531 – 4538 ( 1985 ).
   Web of Science ®Google Scholar
• N. , Guo and P. Cawley , “ Lamb wave propagation in composite laminates and its relation with acoustic-ultrasonics ”, NDT & E International , 26 , 75 – 84 ( 1993 ).
   Web of Science ®Google Scholar
• D.P. Jasen , D. A. Hutchins and J.T. Mottram , “ Lamb waves tomography of advanced composite laminates containing damage ”, Ultrasonics , 32 , 83 – 89 ( 1994 ).
   Google Scholar
• D. N. Alleyne and P. Cawley , “ Optimization of Lamb wave inspection techniques ”, NDT & E International , 25 , 11 – 22 ( 1992 ).
   Web of Science ®Google Scholar
• A.H. Harker , Elastic Waves in Solids , British Gas , Adam Hilger ( 1988 ).
   Google Scholar
• H. Lamb , “ On waves in an elastic plate ”, Proc. R. Soc. London Ser. , A93 , 114 – 128 ( 1917 ).
   Google Scholar
• I.A. Viktorov , Rayleigh and Lamb waves , Physical Theory and Applications , Plenum Press , New York ( 1967 ).
   Google Scholar
• A. Jitsumori , S. Inoue , T. Maekawa and T. Inari , “ Generation of Lamb wave using linear array probe and its application for flaw detection”, Proc. 6th Symposium on Ultrasonic Electronics, Tokyo ( l985 ), Jap. Int. Appl. Physics , 25 , 200 – 202 , ( 1986 ).
   Google Scholar
• R.B. Thompson , G. A. Alers and M.A. Tennison , “ Application of direct electromagnetic Lamb wave generation to gas pipeline inspection ”, Proc. IEEE Ultrasonics Symposium , Boston , Oct 4-7, 91 – 94 ( 1972 ).
   Google Scholar
• R.J. Dewhurst , C. Edwards , A.D.W. McKie and S.B. Palmer , “ Estimation of the thickness of thin sheets using laser-generated ultrasound ”, Appl. Phys. Lett. , 51 , 1066 – 1068 ( 1987 ).
   Web of Science ®Google Scholar
• D.A. Hutchins , K. Lundgren and S.B. Palmer , “ A laser study of transient Lamb waves in thin materials ”, J.Acout, Soc. Am. , 85 , 1441 – 1448 ( 1989 ).
   Web of Science ®Google Scholar
• C. Edwards , A. Al–Kassim , S.B. Palmer , “ Laser Ultrasound for the study of thin sheets ” in Rev. Prog.QNDE , Vol 12 ,Ed D.O. Thompson and D.E. Chimenti , Plenum Press ( New York ) , 539 – 548 ( 1993 ).
   Google Scholar
• D.C. Worlton , “ Experimental confirmation of Lamb waves at mega cycle frequencies ”, J. Appl. Physics , 32 , 967 – 971 ( 1961 ).
   Web of Science ®Google Scholar
• D. N. Alleyne and P. Cawley , “ A two-dimensional Fourier transform method for the measurement of propagating multimode signals ”, J. Acoust. Soc. Am. , 89 , 1159 – 1168 ( 1991 ).
   Web of Science ®Google Scholar
• D. N. Alleyne and P. Cawley , “ The interaction of Lamb waves with defects ”, IEEE Trans. Ultrasonic, Ferroelectrics & Frequency Control , 33 , 381 – 396 ( 1992 ).
   Google Scholar
• H. Sontag and A.C. Tam , “ Optical monitoring of photoacoustic pulse propagation in silicon wafers ”, Appl. Phys. Lett. , 46 , 725 – 727 ( 1985 ).
   Web of Science ®Google Scholar
• S.E. Bobbin , J. W. Wagner and R.C. Cammarata , “ Interpretation of laser generated low-order Lamb waves for elastic modulus measurement in thin films ”, Ultrasonics , 30 , 87 – 90 ( 1992 ).
   Google Scholar
• J.B. Spicer , “ Laser ultrasonics in finite structures: Comprehensive modelling with supporting experiment ”, PhD Thesis. The John Hopkins University , Baltimore , MD , USA ( 1991 ).
   Google Scholar
• J.B. Spicer , A. D. W. McKie and J.W. Wagner , “ Quantitative theory for laser ultrasonic waves in a thin plate ”, Appl. Phys. Lett. , 57 , 1882 – 1884 ( 1990 ).
   Google Scholar
• J.P. Monchalin , “ Optical detection of ultrasound ”, IEEE Trans. Ultrasonic, Ferroelectrics & Frequency Control , UFFC-33 , 485 – 499 ( 1986 ).
   Google Scholar
• R.J. Dewhurst , “ Optical sensing of ultrasound ”, Nondestr. Test. Eval. , 5 , 157 – 169 ( 1990 ).
   Google Scholar
• J.W. Wagner , “ Optical detection of ultrasound ”, in Physical Acoustics Vol 14 , Ed: Academic Press ( New York ), 201 – 266 ( 1990 ).
   Google Scholar
• C. B. Scruby and L.E. Drain , Laser Ultrasonic : Techniques and Applications , Adam Hilger ( Bristol , 1990 (.
   Google Scholar
• N. Noui and R.J. Dewhurst , “ A laser beam deflection technique for the quantitative detection of ultrasonic Lamb waves ”, Ultrasonics , 31 , 425 – 432 ( 1993 ).
   Google Scholar
• R.J. Dewhurst , L. Noui and Q. Shan , “ Polymer film thickness measurement using laser-ultrasound techniques ”, Rev. Sci. Instrum. , 61 , 1736 – 1742 ( 1990 ).
   Google Scholar
• H. Coufal , K. Meyer , R. Grygier , P. Hess and A. Neubrand , “ Precision measurement of the surface acoustic wave velocity on silicon crystals using optical excitation and detection ”, J. Acoust. Soc. Am. , 95 , 1158 – 1160 ( 1994 ).
   Google Scholar
• B. A. Williams and R.J. Dewhurst , “ Differential fibre-optic sensing of laser-generated ultrasound ”, Electronics Letters , 31 , 391 – 392 ( 1995 ).
   Google Scholar
• D. P. Hand – private communication .
   Google Scholar
• D. N. Alleyne and M. J. S. Lowe – private communication .
   Google Scholar