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Flaw Detection in Composite Plates by Means of Lamb Waves

V. Agostini, P.P. Delsanto
INFM - Dip. Fisica - Politecnico of Torino, Italy
D. Zoccolan
Sissa - Trieste, Italy
Email: agostini@athena.polito.it
Contact

INTRODUCTION

RESULTS AND DISCUSSION

Fig 2a: Fig 3a:
Fig 2b: Fig 3b:
Fig 2c: Fig 3c:
Fig 2: Map of the out-of-plane component of the displacement at the time t = 126 ms. From top to bottom: plate with a hole of ø = 1, 4, 10 mm, respectively.Figure 3: "Signature" of the defect. From top to bottom: plate with a hole of Æ = 1, 4, 10 mm, respectively. Notice the difference in the grayness scales.

AKNOWLEDGEMENT

REFERENCES

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  2. D. N. Alleyne and P. Cawley, IEEE Transactions on ultrasonics, ferroelectrics and frequency control 39, 381 (1992).
  3. N. Guo and P. Cawley, J. Acoust. Soc. Am. 94, 2240 (1993).
  4. P. P. Delsanto, G. Perego, M. Scalerandi and D. Zoccolan, Efficiency of Different Ultrasonic Surface Waves for Subsurface Flaws Detection, , Review of Progress in Quantitative Non Destructive Evaluation, vol.18A (Plenum Press, 1999), p.127-133.
  5. P.P.Delsanto, R.S.Schechter, H.H.Chaskelis, R.B.Mignogna and R.Kline, Wave Motion 20, 295 (1994).
  6. P.P.Delsanto, R.S.Schechter, H.H.Chaskelis, R.B.Mignogna and R.Kline, Wave Motion 26, 329 (1994).
  7. R.S.Schechter, H.H.Chaskelis, R.B.Mignogna and P.P.Delsanto, Science 265, 1188 (1994).
  8. P. P. Delsanto, R. B. Mignogna, M. Scalerandi, R. S. Schechter, in New Perspectives on Problems in Classical and Quantum Physics, eds. P. P. Delsanto and A. W. Saenz, (Gordon & Breach, 1998), Vol. 2, p.51.

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