High Strain Rate Compressive Behavior of Polyurethane Resin and Polyurethane/Al2O3 Hollow Sphere Syntactic Foams
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 29, 2014
- Source ID
- 10.1155/2014/795984
Entities
People
- Dung D. Luong
- Nikhil Gupta
- Oliver M. Strbik Iii
- Vasanth Chakravarthy Shunmugasamy
Organizations
- New York University
- United States Army Research Laboratory