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Abstract

This paper presents the impact and compression after impact behavior of PVC foam cored /E-glass reinforced/vinylester sandwiches used in a four-seat amphibian aircraft. The impact damage was sorted in three categories: barely visible impact damage; visible impact damage; and clearly visible impact damage. It was observed that when increasing impact energy, the extension of the damage from barely visible impact damage to visible impact damage corresponds to a significantly high rate of energy absorption as depicted by the absorbed energy/impact energy ratio. Sandwich coupons were modeled with the finite element analysis ANSYS software to predict the critical failure load in presence of damage zones equivalent to those observed experimentally. The finite element model predicts consistently the compression after impact strength of undamaged coupons and this result confirms the model used to represent the woven fabric by an equivalent cross-ply laminate model. However, the finite element overestimates the compression after impact strength of impacted ones. It is suggested that the induced out-of-plane displacements generate stress concentrations in the tip of cracks located at the borders of the damaged zone.

Keywords

Composites impact compression residual strength damage tolerance finite element analysis foam core resin infusion

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References

Shyprykevich P, Tomblin J, Ilcewicz L, et al. Guidelines for analysis, testing, and nondestructive inspection of impact-damaged composite sandwich structures. U.S. Department of Transportation, Federal Aviation Administration, Office of Aviation Research. DOT/FAA/AR-02/121, March 2003.

Fawcett

Oakes

. Boeing composite airframe damage tolerance and service experience. Proceedings of the FAA workshop for composite damage tolerance and maintenance, Chicago, IL: National Institute for Aviation Research, 2006, pp. 1–32.

Baker

. Composite materials for aircraft structures., 2nd ed. Reston, VA: American Institute of Aeronautics and Astronautics, 2004.

Aviles

Carlsson

. Three-dimensional finite element buckling analysis of debonded sandwich panels. J Compos Mater 2005; 40(11): 993–1008.

Shipsha

Zenkert

. Compression-after-impact strength of sandwich panels with core crushing damage. Appl Compos Mater 2005; 12: 149–116.

Moody RC and Vizzini AJ. Damage tolerance of composite sandwich structures. U.S. Department of Transportation, Federal Aviation Administration, Office of Aviation Research. DOT/FAA/AR-99/91, 2000.

Patrick

Schubel

JJL

Daniel

. Impact and post impact behavior of composite sandwich panels. Compos Part A: Appl Sci Manuf 2007; 38: 1051–1057.

Rhead

Butler

Hunt

. Post-buckled propagation model for compressive fatigue of impact damaged laminates. Int J Solids Struct 2008; 45: 4349–4361.

Feng

Aymerich

. Damage prediction in composite sandwich panels subjected to low-velocity impact. Compos Part A: Appl Sci Manuf 2013; 52: 12–22.

10.

Rivallant

Bouvet

Hongkarnjanakul

. Failure analysis of CFRP laminates subjected to compression after impact: FE simulation using discrete interface elements. Compos Part A: Appl Sci Manuf 2013; 55: 83–93.

11.

Saeed

Chen

. Compression behavior of laminated composites subjected to damage induced by low velocity impact and drilling. Compos Part B: Eng 2014; 56: 815–820.

12.

Gordon, S. Tolérance aux dommages des composites sandwichs moulés par le procédé d’infusion. PhD Thesis, École Polytechnique de Montréal, 2008.

13.

Veedu

Carlsson

. Finite-element buckling analysis of sandwich columns containing a face/core debond. Compos Struct 2005; 69: 143–148.

14.

Madenci

Guven

. The finite element method and applications in engineering using ANSYS, New York: Springer, 2006.

15.

Mallick

. Fiber-reinforced composites: Materials, manufacturing, and design, 3rd ed. Dekker Mechanical Engineering, Boca Raton: CRC Press, 2007.

16.

Barbero

. Finite element analysis of composite materials, London: CRC Press, 2008.

17.

Sjogren

Krasnikovs

. Experimental determination of elastic properties of impact damage in carbon fiber/epoxy laminates. Compos Part A: Appl Sci Manuf 2001; 32: 1237–1242.

18.

Yan

Oskay

Krishnan

. Compression-after-impact response of woven fiber-reinforced composites. Compos Sci Technol 2010; 70: 2128–2136.

19.

Lee J, Soutis C and Kong C. Prediction of compression after impact (CAI) strength of CFRP laminated composites. In: Proceedings of the ICCM 1–18th international conference on composite materials, 21–26 August 2011, Korea.

20.

Boukhili

Bojji

Gauvin

. Fatigue mechanisms under low energy repeated impact of composite laminates. J Reinf Plast Compos 1994; 13: 856–870.

Impact behavior and finite element prediction of the compression after impact strength of foam/vinylester-glass composite sandwiches

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