The task of providing optimal composite structures is increasingly difficult. New analysis
approaches seek to model the material at the fibre/matrix scale and increasingly more …

This paper deals with the mechanical behavior of polyether–ether–ketone (PEEK) under
impact loading. PEEK polymers are the great interested in the field of medical implants due …

Background A novel bicycle helmet concept has been developed to mitigate rotational head
acceleration, which is a predominant mechanism of traumatic brain injury (TBI). This …

Existing helmets have a significant but limited ability to reduce the severity of brain injury
and the fatality rate during motorcycle accidents. Helmet designs with a special focus on …

Cycling accidents are the leading cause of sports-related head injuries in the US.
Conventional bicycle helmets typically consist of polycarbonate shell over Expanded …

An innovative auxetic-cored sandwich panel (AXP) is proposed. Its perforation resistant
performance under high-velocity projectile impact was numerically analyzed using the …

Additive Manufacturing (AM) of porous polymeric materials, such as foams, recently became
a topic of intensive research due their unique combination of low density, impressive …

With their lightweight character and high energy absorption capacity, composite sandwich
structures have attracted increasing attention in the transportation industry. The aim of this …

Sports concussions are a public health concern. Improving helmet performance to reduce
concussion risk is a key part of the research and development community response. Direct …

This work deals with the problem of the optimum design of a sandwich panel. The design
strategy that we propose is a numerical optimisation procedure that does not make any …