Journal of the Korean Society for Nondestructive Testing (비파괴검사학회지)

The Korean Society for Nondestructive Testing (한국비파괴검사학회)
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Using Lamb Waves to Monitor Moisture Absorption in Thermally Fatigued Composite Laminates

  • Lee, Jaesun (School of Mechanical Engineering, Pusan National University) ;
  • Cho, Younho (School of Mechanical Engineering, Pusan National University)
  • Received : 2016.04.04
  • Accepted : 2016.06.18
  • Published : 2016.06.30
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Abstract

Nondestructive evaluation for material health monitoring is important in aerospace industries. Composite laminates are exposed to heat cyclic loading and humid environment depending on flight conditions. Cyclic heat loading and moisture absorption may lead to material degradation such as matrix breaking, debonding, and delamination. In this paper, the moisture absorption ratio was investigated by measuring the Lamb wave velocity. The composite laminates were manufactured and subjected to different thermal aging cycles and moisture absorption. For various conditions of these cycles, not only changes in weight and also ultrasonic wave velocity were measured, and the Lamb wave velocity at various levels of moisture on a carbon-epoxy plate was investigated. Results from the experiment show a linear correlation between moisture absorption ratio and Lamb wave velocity at different thermal fatigue stages. The presented method can be applied as an alternative solution in the online monitoring of composite laminate moisture levels in commercial flights.

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References

  1. Z. M. Ishak, U. Ishiaku and J. Karger-Kocsis, "Hygrothermal aging and fracture behavior of short-glass-fiber-reinforced rubber-toughened poly (butylene terephthalate) composites," Composites Science and Technology, Vol. 60, No. 6, pp. 803-815 (2000) https://doi.org/10.1016/S0266-3538(99)00193-1
  2. J. Willett and W. Doane, "Effect of moisture content on tensile properties of starch/poly (hydroxyester ether) composite materials," Polymer, Vol. 43, No. 16, pp. 4413-4420 (2002) https://doi.org/10.1016/S0032-3861(02)00274-4
  3. P. Theocaris, G. Papanicolaou and E. Kontou, "Interrelation between moisture absorption, mechanical behavior, and extent of the boundary interphase in particulate composites," Journal of Applied Polymer Science, Vol. 28, No. 10, pp. 3145-3153 (1983) https://doi.org/10.1002/app.1983.070281013
  4. D. Colombini, J. Martinez-Vega and G. Merle, "Dynamic mechanical investigations of the effects of water sorption and physical ageing on an epoxy resin system," Polymer, Vol. 43, No. 16, pp. 4479-4485 (2002) https://doi.org/10.1016/S0032-3861(02)00272-0
  5. Z. Mohd Ishak, T. Tengku Mansor, B. Yow, U. Ishiaku and J. Karger-Kocsis, "Short glass fibre reinforced poly (butylene terephthalate) Part 1-Microstructural characterisation and kinetics of moisture absorption," Plastics, Rubber and Composites, Vol. 29, No. 6, pp. 263-270 (2000) https://doi.org/10.1179/146580100101541058
  6. M. Lafarie-Frenot, S. Rouquie, N. Ho and V. Bellenger, "Comparison of damage development in C/epoxy laminates during isothermal ageing or thermal cycling," Composites Part A: Applied Science and Manufacturing, Vol. 37, No. 4, pp. 662-671 (2006) https://doi.org/10.1016/j.compositesa.2005.05.002
  7. W. Li, Y. Cho and J. D. Achenbach, "Detection of thermal fatigue in composites by second harmonic Lamb waves," Smart Materials and Structures, Vol. 21, No. 8, pp. 085019 (2012) https://doi.org/10.1088/0964-1726/21/8/085019
  8. S. Yashiro, J. Takatsubo and N. Toyama, "An NDT technique for composite structures using visualized Lamb-wave propagation," Composites Science and Technology, Vol. 67, No. 15, pp. 3202-3208 (2007) https://doi.org/10.1016/j.compscitech.2007.04.006
  9. D. Mattsson, R. Joffe and J. Varna, "Damage in NCF composites under tension: effect of layer stacking sequence," Engineering Fracture Mechanics, Vol. 75, No. 9, pp. 2666-2682 (2008) https://doi.org/10.1016/j.engfracmech.2007.03.014
  10. H. Ghiasi, K. Fayazbakhsh, D. Pasini and L. Lessard, "Optimum stacking sequence design of composite materials Part II: Variable stiffness design," Composite Structures, Vol. 93, No. 1, pp. 1-13 (2010) https://doi.org/10.1016/j.compstruct.2010.06.001
  11. C.-H. Shen and G. S. Springer, "Moisture absorption and desorption of composite materials," Journal of Composite Materials, Vol. 10, No. 1, pp. 2-20 (1976) https://doi.org/10.1177/002199837601000101
  12. D. O. Defense, "Composite Materials Handbook," (2002)
  13. D. S. Forsyth, S. O. Kasap, I. Wacker and S. Yannacopoulos, "Thermal fatigue of composites: Ultrasonic and SEM evaluations," Journal of Engineering Materials and Technology, Vol. 116, No. 1, pp. 113-120 (1994) https://doi.org/10.1115/1.2904246
  14. M. D. Seale and B. T. Smith, "Lamb wave propagation in thermally damaged composites," Review of Progress in Quantitative Nondestructive Evaluation, pp. 261-266 (1996)
  15. W. L. Bradley and T. S. Grant, "The effect of the moisture absorption on the interfacial strength of polymeric matrix composites," Journal of Materials Science, Vol. 30, No. 21, pp. 5537-5542 (1995) https://doi.org/10.1007/BF00351570
  16. T. R. Tauchert and A. N. Guzelsu, "An experimental study of dispersion of stress waves in a fiber-reinforced composite," Journal of Applied Mechanics, Vol. 39, No. 1, pp. 98-102 (1972) https://doi.org/10.1115/1.3422677