High Strain Rate Compressive Behavior of Polyurethane Resin and Polyurethane/Al2O3 Hollow Sphere Syntactic Foams. (28th October 2014)

• Record Type: Journal Article
• Authors: Luong, Dung D.; Shunmugasamy, Vasanth Chakravarthy; Strbik III, Oliver M.; Gupta, Nikhil
• Other Names: Kawai Masamichi Academic Editor.
• Is Part Of: Journal of composites. Volume 2014(2014)
• Publication Date: 2014-10-28
• Subjects: Composite materials -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1155/2014/795984
• Languages: English
• ISSNs: 2356-7252

Abstract

Abstract : Polyurethane resins and foams are finding extensive applications. Seat cushions and covers in automobiles are examples of these materials. In the present work, hollow alumina particles are used as fillers in polyurethane resin to develop closed-cell syntactic foams. The fabricated syntactic foams are tested for compressive properties at quasistatic and high strain rates. Strain rate sensitivity is an important concern for automotive applications due to the possibility of crash at high speeds. Both the polyurethane resin and the syntactic foam show strain rate sensitivity in compressive strength. It is observed that the compressive strength increases with strain rate. The energy absorbed up to 10% strain in the quasistatic regime is 400% higher for the syntactic foam in comparison to that of neat resin at the same strain rate.