Analysis of Revised Helicopter Crashworthiness Criteria

Biomechanical Basis for Injury Criteria Used in Crashworthiness Regulations

A historical review of frontal and side impact regulations in the U.S.A. and Europe has been conducted. The biomechanical basis of injury criteria utilized in these regulations have been examined. It is shown that the biomechanical database utilized in the current impact regulations are based on research conducted before the mid-1980’s. Research conducted since then has not had any impact on re...

Crashworthiness analysis of structures made from polymers

The numerical simulation of structural parts made from polymers is becoming increasingly important. Although highly sophisticated material laws are available in commercial finite element programs, there are still open questions, especially for crashworthiness analysis. In this paper, we restrict our attention to the explicit solver of LS-DYNA, see [1] and [2]. However, the results are transfera...

Revised diagnostic criteria for neurocysticercosis

BACKGROUND A unified set of criteria for neurocysticercosis (NCC) has helped to standardize its diagnosis in different settings. METHODS Cysticercosis experts were convened to update current diagnostic criteria for NCC according to two principles: neuroimaging studies are essential for diagnosis, and all other information provides indirect evidence favoring the diagnosis. Recent diagnostic ad...

Analysis of Stresses in Helicopter Composite blade in Hovering Maneuver

The main purpose of this article is the structural analysis of a composite blade of a selected helicopter. In this study, the stresses on rotors' blades caused by centrifugal forces, lift, drag and torque are analyzed. The governing equations of the structure behavior and solving processes were carried out by MATLAB software, and simulation is carried out by ABAQUS software, and they are compar...

Revised diagnostic criteria for Marfan syndrome.