This research investigates the dynamic response of a novel polyurea foam with different
densities by separately submitting samples to single and multiple impacts at different …

The concept of density-graded foams has been proposed to simultaneously enhance strain
energy dissipation and the load-bearing capacities at a reduced structural weight. From a …

Elastomeric polymer foams are widely used in sports and other protective padding
applications due to their unique properties, such as excellent cushioning and relatively high …

Density gradation of foam structures has been investigated and found to be a practical
approach to improve the mechanical efficacy of protective padding in several applications …

Polymeric foams are ubiquitous in impact mitigation for civilian and military applications; the
performance in such loading scenarios can be elucidated through quasi‐static and dynamic …

Temporary and permanent macromolecular conformational changes can accompany the
deformation of elastomers under high strain rate loading. Mechanical failure can occur as …

Some block-copolymer elastomers are regarded as competitors to metal for lightweight
impact protection design. However, the microscopic spalling mechanism of polymer is still …

The mechanical properties of low-density polyurea (PU) foams (150–300 kg/m 3) are
presented. The hardness, tensile strength, elongation, compression set, resilience, tear …

Polymer matrix composites currently have a wide range of applications in the aerospace,
automotive, and biomedical industries. The specific strength and stiffness of this class of …

Segmented polyurethanes exhibit versatile mechanical properties, where their outstanding
resilience and toughness enable material designs with high energy-absorption capability …