Flexural and Impact Properties of Stainless Steel based Glass Fibre Reinforced Fibre Metal Laminate under Hygrothermal Conditioning


Department of Mechanical Engineering, National Institute of Technology Kurukshetra-136119, Haryana, India


Fibre metal laminates (FMLs) have appeared as the most suitable materials for shipbuilding, aeronautical and aerospace applications due to their superior mechanical properties over traditional materials. In this paper, degradation in flexural and impact properties of glass fibre/epoxy composite (GF/E composite) and stainless steel glass fibre/epoxy fibre metal laminate (SS FML) due to hygrothermal conditioning has been investigated for marine applications. Hand lay-up process was used for specimen preparation according to ASTM standards. Distilled water and seawater were used for hygrothermal conditioning at 40°C and 70°C for three months. The three point bend test was performed on universal testing machine using a three point bend fixture. The pendulum type impact testing machine was used to perform Izod impact test. Due to the preventive action of outer stainless steel layers against moisture ingestion, the reduction in mechanical properties of SS FML was less as compared to GF/E composite. SS FML and GF/E composite exhibited low moisture absorption rate in seawater at both temperatures as high salt content in seawater reduces the moisture diffusion process into the composite matrix.


1.     Kulkarni, R., Chawla, K., Vaidya, U., Koopman, M. and Eberhardt, A., "Characterization of long fiber thermoplastic/metal laminates", Journal of Materials Science,  Vol. 43, No. 13, (2008), 4391-4398.

2.     Rajabi, A. and Kadkhodayan, M., "An investigation into the deep drawing of fiber-metal laminates based on glass fiber reinforced polypropylene", International Journal of Engineering Transactions C: Aspects,  Vol. 27, No. 3, (2014) 349-358.

3.     Sinmazçelik, T., Avcu, E., Bora, M.Ö. and Çoban, O., "A review: Fibre metal laminates, background, bonding types and applied test methods", Materials & Design,  Vol. 32, No. 7, (2011), 3671-3685.

4.     Sherman, D. and Leckie, F., "Alumina carbon/epoxy laminates under cyclic loading", Journal of Materials Science,  Vol. 32, No. 23, (1997), 6263-6268.

5.     Sarlin, E., Hoikkanen, M., Frisk, L., Vuorinen, J., Vippola, M. and Lepisto, T., "Ageing of corrosion resistant steel/rubber/composite hybrid structures", International Journal of Adhesion and Adhesives,  Vol. 49, (2014), 26-32.

6.     Khalili, S., Mittal, R. and Kalibar, S.G., "A study of the mechanical properties of steel/aluminium/grp laminates", Materials Science and Engineering: A,  Vol. 412, No. 1, (2005), 137-140.

7.     Jayabal, S., Natarajan, U. and Murugan, M., "Mechanical property evaluation of woven coir and woven coir–glass fiber-reinforced polyester composites", Journal of Composite Materials,  Vol. 45, No. 22, (2011), 2279-2285.

8.     Akil, H.M., Cheng, L.W., Ishak, Z.M., Bakar, A.A. and Rahman, M.A., "Water absorption study on pultruded jute fibre reinforced unsaturated polyester composites", Composites Science and Technology,  Vol. 69, No. 11, (2009), 1942-1948.

9.     Rath, B., Deo, S. and Ramtekkar, G., "Durable glass fiber reinforced concrete with supplimentary cementitious materials", International Journal of Engineering-Transactions A: Basics,  Vol. 30, No. 7, (2017), 964-970.

10.   Dabiry, Y., Sheikhi, M.M. and Nikoi, R., "An experimental study on the tensile behaviors of ultrasonic welded t-joints for polyamide composite", International Journal of Engineering, Transactions C: Aspects,  Vol. 29, No., (2016), 1783-1790.

11.   Pärnänen, T., Kanerva, M., Sarlin, E. and Saarela, O., "Debonding and impact damage in stainless steel fibre metal laminates prior to metal fracture", Composite Structures,  Vol. 119, (2015), 777-786.

12.   Lee, B.-E., Park, E.-T., Kim, J., Kang, B.-S. and Song, W.-J., "Analytical evaluation on uniaxial tensile deformation behavior of fiber metal laminate based on srpp and its experimental confirmation", Composites Part B: Engineering,  Vol. 67, (2014), 154-159.

13.   Manikandan, V. and Uthayakumar, M., "Effect of redmud particulates on mechanical properties of bfrp composites", International Journal of Engineering-Transactions B: Applications,  Vol. 27, No. 11, (2014), 1741.

14.   Naceri, A., "Moisture diffusion properties of fabric composite (glass fiber/epoxy resin)", International Journal of Engineering-Transactions B: Applications,  Vol. 22, No. 2, (2008), 205-210p.

15.   Botelho, E., Pardini, L. and Rezende, M., "Hygrothermal effects on damping behavior of metal/glass fiber/epoxy hybrid composites", Materials Science and Engineering: A,  Vol. 399, No. 1, (2005), 190-198.

16.   Botelho, E., Almeida, R., Pardini, L. and Rezende, M., "Elastic properties of hygrothermally conditioned glare laminate", International Journal of Engineering Science,  Vol. 45, No. 1, (2007), 163-172.