Development of fiber-reinforced composite material for blast protection
van Daelen, E.C.M.
van de Kasteele, R.M.
This paper shows how standard fiber-reinforced composite materials have limited resistance against blast loading. Their relatively high brittleness in comparison to metals causes them to fail early under out-of-plane blast loading. Their failure appears to be mainly caused by exceedance of strain to failure by local bending, fully absorbing the material straining capability, while the preferred membrane stress in the material hardly develops. Based on this finding, alternative composite material solutions have been manufactured and tested. These tests show that fiberreinforced composite materials can outperform aluminum on an equal-weight basis. This increased performance is largely based on the significant straining capability of the selected high fiber-to-volume fraction unidirectional glass fiber layers at high strain rates. The strength and strain of the used 0°/90° cross-ply laminates under these conditions were found to be comparable to those of armor steel, at significantly lower density. Test results for aluminum 5083 and various composite materials are presented and discussed. An outlook on TNO’s continued development work (2018 and onwards) is provided.
To reference this document use:
25th MABS - Military Aspects of Blast and Shock, The Hague, Netherlands, 24-28 September 2018, P-110