Laminated Glass for Blast Mitigation: Role of Interlayer Properties

Stephen J. Bennison, Jay G. Sloan, David F. Kristunas, Patrick J. Buehler, Tammy Amos & C. Anthony Smith, E.I. DuPont de Nemours & Co. Inc.

We present measurements of polymer interlayer tensile properties under high deformation rates associated with blast loading of laminated glass. For both PVB (Butacite®) and SentryGlas® Plus interlayers, tensile properties at high deformation rates are significantly different from behavior at low rates. The most significant differences are for PVB where the polymer behavior changes from hyperelastic, at low rates, to elasto-plastic, with much increased initial stiffness at high rates. An example of how high rate polymer properties may be used in finite elements to simulate the blast response of a minimally supported laminate is described.

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The Authors

	Dr. Stephen Bennison Research Associate E.I. DuPont de Nemours & Co. Inc. Steve Bennison works on programs related to the development of polymer interlayers for laminated glass. Since 2001 he has been working for DuPont’s Glass Laminated Products business unit as a Researc... Read more
	Mrs. Tammy Amos Global market manager E.I. DuPont de Nemours & Co. Inc. Tammy Amos works at Six Sigma Black Belt in DuPont’s Glass Laminating Solutions business unit. She focuses on top-line growth through the technical and marketing development of structural polymers for... Read more
	Mr. Anthony Smith Project Manager DuPont Read more