M.M. Hamdan

TL;DR: In this article, the current status related to motorcycle helmet crash studies from biomechanics and computational point of view is reviewed, and the importance of motorcycle helmet performance on statistical background was reviewed.

TL;DR: In this article, the authors formulated a methodology which could be used for material selection and basic design of motorcycle helmets and found that the two approaches have the same energy absorption principles but differ in the way of formulation and utilization.

TL;DR: The behavior of composite elliptical thin walled cones subjected to quasi-static axial crushing is examined experimentally in this paper, where a significant enhancement in load carrying capacity and energy absorption capability was seen in the case of elliptical conical shells.

TL;DR: In this paper, a CAD/CAM system for the closed-die forging process is presented, which consists of three stages: namely, metal flow simulation, die failure analysis and design optimisation, and the development and implementation of a machining code.

TL;DR: In this article, the details of shell manufacturing are presented with specific mentioning of the advantages and disadvantages to each type from the manufacturing point of view. And the manufacturing methods of different foam types used as motorcycle helmet liners are described and their characteristics are discussed.