A functionally graded syntactic foam material for high energy absorption under compression

By N. Gupta. 2007

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Compressive behaviour of 3D printed thermoplastic polyurethane honeycombs with graded densities (2019, methodology): “In work by Gupta [17], layers of syntactic foam with varying volume fractions of glass microballoons were stacked and adhered to form functionally graded syntactic foams.”
Quasi-static uni-axial compression behaviour of hollow glass microspheres/epoxy based syntactic foams (2011, background): “Studies on gradient structures based on creating a gradient in microsphere wall thicknesses but maintaining the same volume fraction has revealed 300% increase in the amount of energy absorbed per unit volume in contrast to plain syntactic foams [13].”
On the crashworthiness performance of thin-walled energy absorbers: Recent advances and future developments (2017, methodology): “The functionally graded foam materials were first fabricated by Gupta [217], and Gupta and Ricci [218] where the experimental results reported by the authors showed that FGF material has an”