Crashworthiness can be defined as the ability of an aircraft and its internal systems to protect occupants from injury in the event of a crash. In general, injury in aircraft crashes can be considered to arise from three distinct sources: (1) excessive acceleration forces; (2) direct trauma from contact with injurious surfaces, and; (3) exposure to environmental factors such as fire, smoke, wat...

Previous research [1] using an advanced multi-domain topology optimization technique has shown a great promise for the crashworthiness design using the new technique. In this paper, we try to answer some fundamental questions regarding the crashworthiness design, which include: 1) what are the fundamental crash mechanisms of a general crash process; 2) how the uncertainties in the system will a...

OBJECTIVES In the year 2000, as part of the process for setting New Zealand road safety targets, a projection was made for a reduction in social cost of 15.5 percent associated with improvements in crashworthiness, which is a measure of the occupant protection of the light passenger vehicle fleet. Since that document was produced, new estimates of crashworthiness have become available, allowing...

In recent years, increasing automotive safety by improving crashworthiness has been a focal point in the industry, employing high-strength steel such as press hardenable (PHS). addition to improved strength of individual parts body vehicle, resistance-spot-welded joints these is highly important obtain safe structure. general, dimensions weld nuggets are regarded one criteria for quality spot-w...

2. Vehicles can be designed to provide crash protection to the occu little or no penalty to the weight and cost of the vehicle. 3. Vehicle crashworthiness can be improved by providing the principles to designers and by emphasizing the importance of this design responsibility. Decisions and design choices can then be · and in cases where two or more comparable choices are possible, the in favor ...

Abstract As a class of promising cost-effective lightweight structures, metal-composite hybrids have rapidly emerged in automotive industry largely attributable to their outstanding multifunctional and crashworthy characteristics. The aim this study is investigate the potentiality cylinders for crash energy absorption applications. In context, crashworthiness performance, deformation history ju...

Abstract Driven by current safety and weight reduction policies in the automotive sector, development of new high strength sheet metal products has experienced unprecedented growth last years. With emergence these materials, challenges related to their limited ductility higher cracking susceptibility have also raised. Accordingly, fracture criteria accounting for material’s resistance become un...

The main purpose of bumper is to absorb shock in case of a collision. Several materials have been used to develop these shock-absorbing capabilities, such as steel, aluminium, glass mat thermoplastics and sheet molding compound. The purpose of this project is to design a bumper which is to improve crashworthiness of the bumper beam. Crashworthiness is the ability of the bumper beam to prevent o...

One of the recent developments in safety systems is an external airbag installed on front bumper a vehicle and autonomous emergency braking system. In this paper, we propose framework for cost-benefit analysis system order to validate its commercialization. Road traffic crash data obtained from National Automotive Sampling System/Crashworthiness Data System (NASS/CDS) was used, three different ...

A 22-year-old man died following a side impact blow in an automobile accident. Necropsy showed a large tear in the posterior wall of the aorta approximately 12 mm distal to the insertion of ligamentum arteriosum (Figures 1 and 2). Subadventitial hemorrhage was prominent in the descending thoracic aorta. Th e left pleural space contained large quantities of blood. Traumatic aortic rupture is the...