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Viewing 181 to 210 of 16644
2016-04-05
Journal Article
2016-01-0081
Husein Dakroub, Adnan Shaout, Arafat Awajan
Abstract Connectivity has become an essential need for daily device users. With the car projected to be the “ultimate mobile device”, connectivity modules will eventually be mainstream in every car. Network providers are expanding their infrastructure and technology to accommodate the connected cars. Besides making voice and emergency calls the connected car will be sharing data with telematics service providers, back end systems and other vehicles. This trend will increase vehicle modules, complexity, entry points and vulnerabilities. This paper will present the current connected car architectures. The paper will present current architectural issues of the connected car and its vulnerabilities. The paper will present a new proposed architecture for the future connected car that enhances efficiency and security.
2016-04-05
Technical Paper
2016-01-0136
Deepak Gangadharan, Oleg Sokolsky, Insup Lee, BaekGyu Kim, Chung-Wei Lin, Shinichi Shiraishi
Abstract Optional software-based features (for example, to provide active safety, infotainment, etc.) are increasingly becoming a significant cost driver in automotive systems. In state-of-the-art production techniques, these optional features are built into the vehicle during assembly. This does not give the customer the flexibility to choose the specific set of features as per their requirement. They either have to buy a pre-bundled option that may or may not satisfy their preferences or are unable to find an exact combination of features from the inventory provided by a dealership. Alternatively, they have to pre-order a car from the manufacturer, which could result in a substantial delay. Therefore, it is important to improve the flexibility of delivering the optional features to customers. Towards this objective, the vehicle could be configured with the desired options at the dealership, when the customer requires them.
2016-04-05
Technical Paper
2016-01-0040
Ming Meng, Wilson Khoo
The modern vehicle development is highly dependent on software. The software development plays an extremely important role in vehicle safety and security. In order to ensure software high quality and safety standards, we have investigated the secure software development process and analyzed the works in this area. Based on our analysis, we have identified the similarities and differences between the secure software development process and the existing vehicle development process. We then made suggestions on how to adopt the secure software development process in the overall vehicle development process.
2016-04-05
Journal Article
2016-01-1488
Derek Jones, James Gaewsky, Ashley Weaver, Joel Stitzel
Abstract Computational finite element (FE) modeling of real world motor vehicle crashes (MVCs) is valuable for analyzing crash-induced injury patterns and mechanisms. Due to unavailability of detailed modern FE vehicle models, a simplified vehicle model (SVM) based on laser scans of fourteen modern vehicle interiors was used. A crash reconstruction algorithm was developed to semi-automatically tune the properties of the SVM to a particular vehicle make and model, and subsequently reconstruct a real world MVC using the tuned SVM. The required algorithm inputs are anthropomorphic test device position data, deceleration crash pulses from a specific New Car Assessment Program (NCAP) crash test, and vehicle interior property ranges. A series of automated geometric transformations and five LSDyna positioning simulations were performed to match the FE Hybrid III’s (HIII) position within the SVM to reported data. Once positioned, a baseline simulation using the crash test pulse was created.
2016-04-05
Technical Paper
2016-01-1489
Logan Miller, James Gaewsky, Ashley Weaver, Joel Stitzel, Nicholas White
Abstract Crash reconstructions using finite element (FE) vehicle and human body models (HBMs) allow researchers to investigate injury mechanisms, predict injury risk, and evaluate the effectiveness of injury mitigation systems, ultimately leading to a reduced risk of fatal and severe injury in motor vehicle crashes (MVCs). To predict injuries, regional-level injury metrics were implemented into the Total Human Model for Safety (THUMS) full body HBM. THUMS was virtually instrumented with cross-sectional planes to measure forces and moments in the femurs, upper and lower tibias, ankles, pelvis (pubic symphysis, ilium, ischium, sacrum, ischial tuberosity, and inferior and superior pubic ramus), and the cervical, thoracic, and lumbar vertebrae and intervertebral discs. To measure accelerations, virtual accelerometers were implemented in the head, thoracic vertebrae, sternum, ribs, and pelvis.
2016-04-05
Technical Paper
2016-01-1466
Bradley C. Reckamp, Charles Moody, Anthony Timpanaro, Orion Keifer
Abstract A common low speed motor vehicle collision scenario occurs in heavy traffic situations between two or more vehicles which were stopped in traffic prior to the collision. While information regarding the pre-collision spacing of the involved vehicles can be very useful to an accident reconstructionist, witness perceptions and statements regarding the distance between the stopped vehicles, prior to the collision, can be inaccurate. Physical evidence regarding precollision spacing is also unavailable in most cases. A study was conducted of several selected intersections in three major metropolitan areas in the United States of America. Publicly available aerial photography, rectified and scaled, was used to perform a statistical analysis of the distance between stopped passenger vehicles at busy traffic signalized intersections.
2016-04-05
Technical Paper
2016-01-1527
Paul Podzikowski, Suk Jae Ham, John Cadwell, Aviral Shrivatri
Abstract The introduction of a revised New Car Assessment Program (NCAP) frontal crash test in the US has been challenging due to more stringent Anthropomorphic Test Device (ATD) rating metrics such as neck injury (Nij). These ATD responses in full vehicle tests may be under-predicted with conventional linear sleds because they are not capable of reproducing the pitching effect seen in some vehicle tests. The primary objective of this study was to confirm the effects of pitching sled on front passenger 5th %ile female ATD Nij response by comparing prototype vehicle test to pitching sled and linear sled tests. A second objective was to confirm that newly introduced pitching sled with enhanced pitching capability was able to reproduce similar vehicle kinematics when compared to a baseline vehicle test.
2016-04-05
Technical Paper
2016-01-1473
Orion P. Keifer, Bradley Reckamp, Charles Moody, Anthony Timpanaro
Abstract Evaluation of the severity of low speed motor vehicle crashes has been the subject of significant research for more than 25 years. These crashes typically result in little if any damage to the vehicles involved and therefore the ability to determine the threshold of damage would be very useful in analysis of such cases. One such threshold, which has been used by accident reconstructionists, is the manufacturer’s published bumper rating in compliance with Federal Motor Vehicle Safety Standards (FMVSS) for vehicle bumpers. The rationale is that if there is any damage to the bumper system of the vehicle in question, the impact must have had a severity greater than the rated bumper speed. This paper examines the FMVSS bumper standards upon which the published bumper ratings are reportedly in compliance, historical low speed testing damage results, and engineering considerations of bumper damage in low speed impacts.
2016-04-05
Technical Paper
2016-01-1512
Jeya Padmanaban, Roger Burnett, Andrew Levitt
Abstract This paper updates the findings of prior research addressing the relationship between seatback strength and likelihood of serious injury/fatality to belted drivers and rear seat occupants in rear-impact crashes. Statistical analyses were performed using 1995-2014 CY police-reported crash data from seventeen states. Seatback strength for over 100 vehicle model groupings (model years 1996-2013) was included in the analysis. Seatback strength is measured in terms of the maximum moment that results in 10 inches of seat displacement. These measurements range from 5,989 in-lbs to 39,918 in-lbs, resulting in a wide range of seatback strengths. Additional analysis was done to see whether Seat Integrated Restraint Systems (SIRS) perform better than conventional belts in reducing driver and rear seat occupant injury in rear impacts. Field data shows the severe injury rate for belted drivers in rear-impact crashes is less than 1%.
2016-04-04
Standard
ARP1836C
This SAE Aerospace Recommended Practice (ARP) outlines the functional and design requirements for a b self-propelled belt conveyor for handling baggage and cargo at aircraft bulk cargo holds. Additional considerations and requirements may legally apply in other countries. As an example, for operation in Europe (E.U. and E.F.T.A.), the applicable EN standards shall be complied with.
2016-04-04
Standard
AIR6894
This document describes laser wire stripping technologies and recommendations to strip electrical single conductor and shielded cables intended for aerospace applications. These recommendations include: - Laser stripping safety guidelines - Laser stripping quality - Tool qualification - Tool inspection - User health and safety
2016-04-01
Magazine
Electronic Warfare Next Generation FPGAs for Electronic Warfare Systems Materials: Composites Managing the Impact of Nanomaterials in Aerospace Manufacturing Aerospace Materials/Manufacturing Turbine Flow Meters Alternative Power Sources Designing a Power Generation System for a More-Electric Aircraft
2016-03-30
WIP Standard
J1194
Fulfillment of the intended purpose requires testing as follows: A laboratory test, under repeatable and controlled loading, to permit analysis of the ROPS for compliance with the performance requirements of this SAE Standard. Either the static test (6.1) or the dynamic test (6.2) shall be conducted. A crush test to verify the effectiveness of the deformed ROPS in supporting the tractor in an upset attitude. A field upset test under reasonably controlled conditions, both to the rear and side, to verify the effectiveness of the protective system under actual dynamic conditions. (See 6.4.1.1 for requirements for the omission of this test). In addition to the laboratory and field loading requirements, there is a temperature-material requirement. (See 7.1.2.) The test procedures and performance requirements outlined in this document are based on currently available engineering data.
2016-03-30
WIP Standard
J2194
Any ROPS meeting the performance requirement of ISO 5700 (Static ROPS Test Standard) or ISO 3463 (Dynamic ROPS Test Standard) meets the performance requirements of this SAE Standard if the ROPS temperature/material and seat belt requirements of this document are also met. Fulfillment of the intended purpose requires testing as follows: A temperature-material requirement (6.9). This can be satisfied by using the appropriate materials or by performing any of the structural performance tests (Sections 7, 8, or 9) at -18 °C. A laboratory test, under repeatable and controlled loading, to permit analysis of the ROPS for compliance with the performance requirements of this document. Either the static test sequence (Section 7) or the impact test sequence (Section 8 ) shall be conducted. See Figure 1. A seat belt anchorage test (Section 10). The test procedures and performance requirements outlined in this document are based on currently available engineering data.
2016-03-27
Article
Self-driving car project CEO John Krafcik discussed Google's work underway toward fully autonomous vehicles, at a recent NY forum. First likely market: the elderly and impaired.
2016-03-27
Technical Paper
2016-01-1738
Natt Winitthumkul, Peerapat Phondeenana, Nuksit Noomwongs
Abstract According to the recent study, Thailand has the 2nd most dangerous road in the world. Based on many researches, the driver is the main influencers of the traffic fatalities. Since the more dangerous the driver drive, the more chance of accident become. Therefore, driver’s monitoring system become one of the solutions that acceptable and reliable, especially for fleet management and public transportation. This paper’s goal is to find an algorithm that can distinguish driving behaviour based on cars’ acceleration and velocity, calling it as Risk Driving Score (RDS). The algorithm was tested by driving test by volunteers on highways with observers, who were told to rank the drivers in terms of driving risk from the 1-5 point. Meanwhile, the drivers were asked to drive in 3 different styles, normal, safety, and hurry. All drives were recorded by satellite and video data then filtered and used for the algorithm calculation.
2016-03-27
Technical Paper
2016-01-1737
Thitsadee Ngernsukphaiboon, Sunhapos Chantranuwathana, Nuksit Noomwongs, Angkee Sripakagorn, Solaphat Hemrungrojn MD
Abstract The world is aging rapidly. Many countries can already be categorized as aging or aged societies while a few are becoming super-aged societies. In Thailand as well as in other countries, traffic accidents caused by elderly drivers will continue to rise as a significant percentage of elderly people still prefer to drive. Accidents may be prevented with driving tests and screening methods for elderly drivers. However, it is also necessary to understand the effect of aging on driving ability. With this understanding, driver training, driver assistant systems, and improvements on infrastructure may be designed accordingly. Among various physical changes, cognitive ability of the brain is one of the most significant factors affecting driving ability. In this paper, correlation between various cognitive functions of the brain and car following skill of drivers are considered.
2016-03-25
WIP Standard
AIR5661A
This report provides data and general analysis methods for calculation of internal and external, pressurized and unpressurized airplane compartment pressures during rapid discharge of cabin pressure. References to the applicable current FAA and EASA rules and advisory material are provided. While rules and interpretations can be expected to evolve, numerous airplanes have been approved under current and past rules that will have a continuing need for analysis of production and field modifications, alterations and repairs. The data and basic principles provided by this report are adaptable to any compartment decompression analysis requirement.
2016-03-23
Standard
J175_201603
The SAE Recommended Practice establishes minimum performance requirements and related uniform laboratory test procedures for evaluating lateral (curb) impact collision resistance of all wheels intended for use on passenger cars and light trucks.
2016-03-17
WIP Standard
ARP6412
The scope of the Landing Gear Integrity Programs (LGIP) Aerospace Recommended Practice (ARP) is intended to assist in the safe-life structural integrity management of the landing gear system and subsystems components. In addition, component reliability, availability, and maintainability is included in a holistic LGIP.
2016-03-16
WIP Standard
AS1046D
This standard is intended to apply to portable compressed gaseous oxygen equipment. When properly configured, this equipment is used either for the administration of supplemental oxygen, first aid oxygen or smoke protection to one or more occupants of either private or commercial transport aircraft.
2016-03-15
WIP Standard
AIR6411
Provide information and guidance for landing gear operation in cold temperature environment. Covers all operational aspects on ground and in flight. Includes effects on: tires, wheels, brakes, shock strut, seals, and actuation.
2016-03-15
WIP Standard
AS5714
To assist the FAA with the technical update of TSO-C26d to address Electric Brake Actuation, standardize with TSO-C135a and address any remaining concerns with the current document.
2016-03-14
WIP Standard
AS6409
Provide specifications for hydraulic fluids used in landing gear shock struts. Some of this information was previously in AIR5358 however specifications should be in an AS. This new document will contain the appropriate specifications for premixed hydraulic fluid with additives believed to improve fluid performance and reduce friction.
2016-03-14
WIP Standard
AS6410
This document was requested by the FAA to provide a technical update of TSO-C26d to address Electric Brake Actuation, standardize with TSO-C135a and address any remaining concerns with the current technical requirements in AIR5381.
2016-03-12
Article
The standard German taxi cab, now entering its 10th generation, is 80% ready for autonomous driving on the autobahn, according to its chief engineer.
2016-03-11
WIP Standard
ARP6408
The purpose of this SAE Aerospace Recommended Practice (ARP) is to provide a reasonable definition of external hydraulic fluid leakage exhibited by landing gear shock absorbers. The definition will outline normal and excessive leakage that is measureable and routinely encountered in newly assembled refurbished/remanufactured components, leakage during acceptance flights, recently delivered and in-service aircraft.
2016-03-11
WIP Standard
J2305
This SAE Standard applies to horizontal earthboring machines (SAE J2022) of the following types: a. Auger boring machines; b. Rod pushers; c. Rotary rod machines; d. Impact machines; e. Horizontal Directional Drilling machines. This document does not apply to specialized mining machines, conveyors, tunnel boring machines, pipe jacking systems, micro tunnelers, or well drilling machines.
2016-03-11
Standard
J578_201603
This SAE Standard defines and provides a means for the control of colors employed in motor vehicle external lighting equipment, including lamps and reflex reflectors. The document applies to the overall effective color of light emitted by the device in any given direction and not to the color of the light from a small area of the lens. It does not apply to pilot, indicator, or tell-tale lights.
2016-03-10
WIP Standard
J3121
Develop a J standard document that test laboratories can use to understand all of the risks involved with crash testing of fuel cell vehicles
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