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Viewing 271 to 300 of 16192
2015-04-14
Journal Article
2015-01-1383
Andrew Blum, Richard Thomas Long
Abstract Fires involving cars, trucks, and other highway vehicles are a common concern for emergency responders. In 2013 alone, there were approximately 188,000 highway vehicle fires. Fire Service personnel are accustomed to responding to conventional vehicle (i.e., internal combustion engine [ICE]) fires, and generally receive training on the hazards associated with those vehicles and their subsystems. However, in light of the recent proliferation of electric drive vehicles (EDVs), a key question for emergency responders is, “what is different with EDVs and what tactical adjustments are required when responding to EDV fires?” The overall goal of this research program was to develop the technical basis for best practices for emergency response procedures for EDV battery incidents, with consideration for suppression methods and agents, personal protective equipment (PPE), and clean-up/overhaul operations.
2015-04-14
Journal Article
2015-01-1386
Devin SJ Caplow-Munro, Helen Loeb, Venk Kandadai, Flaura Winston
Abstract Inadequate situation awareness and response are increasingly recognized as prevalent critical errors that lead to young driver crashes. To identify and assess key indicators of young driver performance (including situation awareness), we previously developed and validated a Simulated Driving Assessment (SDA) in which drivers are safely and reproducibly exposed to a set of common and potentially serious crash scenarios. Many of the standardized safety measures can be calculated in near real-time from simulator variables. Assessment of situation awareness, however, largely relies on time-consuming data reduction and video coding. Therefore, the objective of this research was to develop a near real-time automated method for analyzing general direction and location of driver's gaze in order to assess situation awareness.
2015-04-14
Technical Paper
2015-01-1406
Mikael Ljung Aust, Lotta Jakobsson, Magdalena Lindman, Erik Coelingh
Abstract This paper first discusses the advancement and challenges in the areas of developing Collision Avoidance Systems, or CAS. CAS have been on the market for a decade, and their development has been rapid. Starting with forward collision warning with brake support, targeting vehicles moving in the same direction in front of the car, CAS now cover pedestrians and cyclists in front of the car as well as vehicles standing still and even some situations of approaching vehicles in crossings. This development up to date is described and discussed according to the challenge areas of detection, decision strategy and intervention strategy. Next, the paper discusses assessment of system effects on driving safety. Numerous studies have tried to predict the effect of various CAS, and the real world effect of these systems has been shown to be significant.
2015-04-14
Technical Paper
2015-01-1414
Jitendra Shah, Mohamed Benmimoun
Abstract The focus of this paper is the threat assessment of perceived threat by drivers in collision avoidance situations. The understanding of the decision making process with regards to the initiation of a driver intervention is a crucial step to gain insight into driver's steering and braking behavior in case of an imminent threat (rear-end collision). Hence a study with various test subjects and a test vehicle has been conducted. The study has helped to understand how drivers behave in potential rear-end collision situations arising from the traffic situation (e.g. start of a traffic jam). This information is of major importance for designing autonomous collision avoidance systems and an important step towards autonomous driving. Autonomous driving in vehicles require system interventions to be initiated as early and safely as possible in order to avoid the collision and to avoid unstable vehicle dynamics situations.
2015-04-13
WIP Standard
J3095
impact calibration procedure
2015-04-10
WIP Standard
J2663
This test method is intended for measuring fuel permeation at elevated temperature through low permeating hose or tubing samples of elastomeric or composit construction. The expected accuracy of the method is about +/- 10% of the sample permeation rate.
2015-04-10
WIP Standard
J1748
This SAE Recommended Practice applies to determining worst-case fuel, conditioning test specimens in worst-case fuel(s) prior to testing, individual tests for properties of polymers exposed to methanol-gasoline fuel mixtures. The determination of equilibrium, as well as typical calculations are also covered. Polymers are used in applications which require exposure to a variety of fluid environments. Tests to determine the effects of such exposure on material properties are well established. However, the determination of the effects on polymers exposed to fuels of variable alcohol and ether content poses new problems. This document seeks to address those concerns by detailing changes to standard tests that make them suitable for that purpose.
2015-04-10
Book
This is the electronic format of the Journal.
2015-04-09
WIP Standard
AS5975C
Scope is unavailable.
2015-04-09
Standard
J850_201504
Fixed rigid barrier collisions can represent severe automotive impacts. Barrier collision tests are conducted on automotive vehicles to obtain information of value in reducing occupant injuries and in evaluating structural integrity. The purpose of this SAE Recommended Practice is to establish sufficient standardization of barrier collision methods so that results of similar tests conducted at different facilities can be compared. The barrier device may be of almost any configuration, such as flat, round, offset, etc.
2015-04-09
Standard
J1538_201504
The terms included in the Glossary are general in nature and may not apply to all manufacturers' systems. All terms in Section 3 apply to automotive inflatable restraint systems in general which are initiated by an electric or mechanical stimulus upon receipt of a signal from a sensor. These terms are intended to reflect existing designs and the Glossary will be updated as information on other types of systems becomes available. Appendix A is included to identify terminology that is no longer in common use or specifically applicable to inflatable restraint systems, but was published in the December 2001 version of SAE J1538.
2015-04-08
WIP Standard
AIR1168/4B
This section presents the basic equations for computing ice protection requirements for nontransparent and transparent surfaces and for fog and frost protection of windshields. Simplified graphical presentations suitable for preliminary design and a description of various types of ice, fog, frost, and rain protection systems are also presented.
2015-04-08
WIP Standard
ARP1907C
This Aerospace Recommended Practice (ARP) covers the functional, design, construction, and test requirements for Automatic Braking Systems. Installation information and lessons learned are also included.
2015-04-06
WIP Standard
AS8090A
This specification covers general design and performance requirements for the mobility of towed ground support equipment. The complete mobility requirements for an item of towed aerospace ground equipment not specified herein shall be specified in the individual equipment specification (see 6.4).
2015-04-01
Journal Article
2015-01-9151
Eric S. Winkel, Daniel E. Toomey, Robert Taylor
Abstract Thoracolumbar vertebral fractures are most commonly due to compressive loading modes and associated with falls from height. Two injury metrics are generally referenced for assessing the potential for compressive thoracolumbar injury; the Dynamic Response Index (DRI) and the compressive load measured between the pelvis and lumbar spine using the Code of Federal Regulations (CFR) title 49 part 572 subpart B anthropomorphic test device (ATD). This study utilizes an ATD to investigate the injury mitigation potential of a variety of seat cushions during vertical impact in an unrestrained seated posture. ATD responses and DRI are reported for 65 vertical impacts with and without cushions from heights between 4 and 80 inches. The cushions investigated reduced ATD peak pelvic acceleration 63 +/− 11% and compressive lumbar load 42 +/− 9% on average.
2015-04-01
Magazine
Propulsion Fanjet Evolution - the Next Steps Composites Dry Drilling Composites Using Carbon Dioxide Cooling
2015-03-30
Technical Paper
2015-01-0124
Raksit Thitipatanapong, Sunhapos Chantranuwathana, Nuksit Noomwongs, Pornporm Boonporm, Petch Wuttimanop, Sanya Klongnaivai
Abstract The road accident is major concern around the world, so do Thailand. It is caused by three main factors: man, vehicle and infrastructure. The most important part that accounts the safety of vehicle is human. With experiences and careful driver, the accident could be diminished. So that the vehicle monitoring systems are the vital tools to screen out the inexperience or aggressive driver. In this paper, we state the problem about the dangerous driving behavior by monitoring lateral and longitudinal acceleration. For this purpose, the inertial measurement unit should be applied but it is inconvenient to install in the vehicle. Consequently, the vehicle monitoring system were developed based on novel consumer grade multi-satellite navigation receivers and were compared to Racelogic Video V-Box system in controlled condition tested track. The incidents were virtually detected and reviewed. The incident detection algorithm were proposed and tested alongside with receivers.
2015-03-27
Standard
J397_201503
This SAE Standard applies to operator protective structures which may commonly be a part of construction, forestry, mining, and industrial machines. To establish limits on deflection permissible during laboratory evaluations of certain operator protective structures, such as ROPS, FOPS, OPS, and FOG as defined in other SAE standards.
2015-03-27
Standard
J1819_201503
The scope of this SAE Recommended Practice is to promote compatibility between child restraint systems and vehicle seats and seat belts. Design guidelines are provided to vehicle manufacturers for certain characteristics of seats and seat belts, and to child restraint system (CRS) manufacturers for corresponding CRS features so that each can be made more compatible with the other. The Child Restraint System Accommodation Fixture, shown in Figure 1, is used to represent a CRS to the designers of both the vehicle interior and the CRS for evaluation of each product for compatibility with the other. The features of the accommodation fixture are described as each is used. A CRS accommodation template of transparent plastic, not shown, represents the side of the accommodation fixture for use in approximating its installed position on design drawings.
2015-03-26
WIP Standard
J3093
This Information Report addresses the design and performance specifications for a generic buck to be used in full-scale vehicle to pedestrian tests conducted to evaluate pedestrian dummy performance. Specifically, the buck is designed to mimic the impact response of the front end of a sedan within the small family car vehicle class during a collision with a pedestrian. The goal is to develop a generic buck with simplified geometry and a limited number of components made of clearly defined and readily available engineering materials to facilitate manufacturing and reproducibility. To ensure performance of the buck, it is specified that the buck mimics the peak crush, absorbed energy, and peak force corresponding to a sedan within the small family car vehicle class during a pedestrian impact.
2015-03-25
Article
The move into active safety systems is increasing the need for high-reliability software. AdaCore, a tool supplier that’s used in many aerospace applications, is responding to this demand with tools that can be used by the automotive industry.
2015-03-16
Article
Rain, wind, and visibility can influence driving safety and impact the bottom line for on- and off-highway fleets.
2015-03-13
Standard
J972_201503
Collision tests are conducted on automotive vehicles to obtain information of value in evaluation of structural integrity and in reducing the risk of occupant injuries. The deformation resulting from a moving rigid barrier impact is more severe at a given speed than that produced by using an actual vehicle, but is more readily reproducible than that occurring during vehicle to vehicle impacts. The purpose of this SAE Recommended Practice is to establish sufficient standardization of such moving barriers and moving barrier collision methods so that results of tests conducted at different facilities may be compared.
2015-03-12
WIP Standard
AS6323
AS PART STANDARD FOR AN EXTENDED UNION TO REPLACE A CUT OUT AS6117 UNION
2015-03-11
WIP Standard
ARP5533A
This SAE Aerospace Recommended Practice (ARP) covers the requirements for a Stationary Runway Weather Information System (referred to as the systemRWIS or System) to monitor the surface conditions of airfield operational areas to ensure saferthe conditions of the aircraft ground operations of aircraft areas of an airport. The RWIS shall providesystem provides (1) temperature and condition information of runway, taxiway, and ramp pavements and (2) provide atmospheric weather information conditions that assist needed airport personnel to maintain safer and more for efficient airport operations and maintenance. The system can be either a wired system or a wireless system.
2015-03-11
WIP Standard
AS6322
AS PART STANDARD FOR AN EXTENDED UNION TO REPLACE A CUT OUT AS5969 UNION.
2015-03-10
Technical Paper
2015-01-0024
Jaehaeng Yoo
Abstract For the robust passenger NCAP(New Car Assessment Program) 5star and the stable neck injury performance, a new concept of passenger airbag has been required. Especially, the deployment stability and the vent hole control technology of the passenger airbag can be improved. According to these requirements, the deployment stability technique has been studied and the ‘Active Vent’ technology has been developed. As a result, these technologies have led to achieve the robust NCAP rating and are applied to the production vehicles.
2015-03-10
Technical Paper
2015-01-0026
Wenku Shi, Changxin Wang, Zan Li
Abstract In order to improve the handling and stability of a light bus at high speed, a virtual model was established in Adams-Car and its anti-roll bar and bushing parameters were virtually optimized. The tyre mechanical characteristics were firstly tested by using a plate-type tyre tester and the Magic Formula parameters of the tyre were obtained. Then the virtual bus model's handling performance were studied by the simulation of central steering test and steady static circular test. An optimal matching method was put forward. By using genetic algorithm to conduct optimization, the optimised parameters were obtained. After that the anti-roll bar and bushing samples were respectively manufactured. At last, the comparative trials were performed in an automotive proving ground, and the subjective evaluation of the light bus's handling and stability was taken by three specialized assessors.
2015-03-10
Technical Paper
2015-01-0032
Hiroyuki Takanashi, Tetsushi Mimuro, Toshiya Tsukahara, Shinichiro Honda, Hiroyuki Asada
Abstract First, this paper focuses on classification of near-miss incidents with pedestrian into typical scenarios, and then incident data are analyzed under the assumption that pedestrian detection system has a pre-determinant sensing performance. The data of 220 near-miss incidents with pedestrian when own vehicle goes straight are employed. We proposed a set of eight scenarios which structure is not necessarily hierarchical. The eight scenarios cover about 75% of the incidents. To highlight the characteristics of the eight scenarios, two kinds of vector-diagrams are introduced which illustrate the transition of relative position between pedestrian and own-vehicle, and TTC-TTV (Time To Collision - Time To Vehicle) relation respectively. For example, in a relative position diagram, we can grasp the pedestrian's relative position which the detection system finds the pedestrian first when he/she appeared with pre-determinant wide detection angle.
2015-03-10
Technical Paper
2015-01-0064
Sung Hoon Cho
Abstract The rollcage for WRC race body/rollcage has been developed and optimized by DFSS methodology. It is designed on the principle of reducing it to a Min. of weight compared to the other OEM and the initial set-up model with the torsional stiffness and strength increased. As a result, 12% increased torsional stiffness, maximized strength and 3.7% weight reduction could be achieved. In terms of economics, it is feasible to have a production cost savings of about 11% per car and the effect is further, considering the development period is substantially decreased, 5 to 2 months. Also, in the process of optimizing rollcage structure, applicable items to monocoque body are suggested by investigating the parts and structures that highly affect the body performance.
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