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Viewing 1 to 30 of 4282
2017-09-04
Technical Paper
2017-24-0127
Lauretta Rubino, Dominic Thier, Torsten Schumann, Stefan Guettler, Gerald Russ
With the increasing number of engines utilizing direct fuel injection and the upcoming more stringent emission legislation, regulating not only particulate mass (PM) but particulate number (PN), emissions of Direct Injection Spark Ignition Engines (DISI) are becoming of increasing concern. Gasoline Particle Filters (GPF) represent a novel potential measure to reduce particle number emissions from DISI engines and are particularly effective in view of the tight particle number limits requirements at cold start and over RDE. Even if some learning from the development and application of particulate filters to diesel engines can be transferred to gasoline engines, the particulate consistence, the mass to number ratio and the temperature as well as the gas composition of gasoline engines are significant different to diesel engines. Therefore, there is the need to study the application of particulate filters to gasoline engines carefully.
2017-07-10
Technical Paper
2017-28-1930
Anil Kumar Jaswal, Pradeep Chandrasekaran, Surendran Ramadoss
Abstract Indian Automobile Industry has started using Six Sigma for Vehicle Design and process improvement to compete with Global competition. This Paper describes how the Tools of Six Sigma shall be used as an Effective Tool for both redefining the Design and the Process Improvement. This Paper talks on the evolution of DMADV approach in Indian Automobile Industry compared to the related Trends in Other Manufacturing Sectors. The Author describes how the warranty failures in Commercial Segment Vehicle Category which was the selling talk for the Competition was addressed in Leading Indian Automobile OEM. As this Failure was adversely impacting customer satisfaction and no solution seemed forthcoming, top Management indicated to use a radically different approach to solve the problem within a years’ time.
2017-06-27
Article
Recently NASA researchers were officially cleared to begin formal feasibility studies on advanced Unmanned Aircraft System (UAS) concepts under NASA’s Convergent Aeronautics Solutions (CAS) project. The investigations, three in total, are expected to take between 24 and 30 months to complete.
2017-06-27
Article
The new vehicle test center in Auburn Hills, MI, will feature a chassis dyno for emissions testing, powertrain development programs and benchmarking.
CURRENT
2017-06-21
Standard
AMS2249H
This specification defines limits of variation for determining acceptability of the composition of cast or wrought titanium and titanium alloy parts and material acquired from a producer.
CURRENT
2017-06-21
Standard
ARP9009A
This SAE Aerospace Recommended Practice (ARP) specifies for quality requirements that are additive to a procurement document or contract, where an organization: a. needs to provide additional guidance for suppliers and other organizations in the delivery of products, goods and services in accordance with stated quality demands, and b. needs to provide information in addition or in absence of existing quality system requirements to provide the assurance of conformity to customer and applicable regulatory requirements. NOTE: In this ARP, the term ‘product’ applies only to the product intended for, or required by, a customer.
2017-06-16
Article
Soon, new vehicles will be able to communicate back and forth with each other and with traffic signals.
2017-06-16
Article
In a production vehicle that Tula tested, conventional operation yielded what was termed an “objectionable” audible boom at 47 Hz with production calibration. However, under DSF operation all firing patterns resulting in frequencies between 44 Hz and 48 Hz were avoided.
CURRENT
2017-06-16
Standard
AMS2380G
This specification covers the procedures for approval of products of premium-quality titanium alloys and the controls to be exercised in producing such products.
2017-06-13
Article
Low Speed Pre Ignition (LSPI) is an abnormal combustion event with the potential to cause catastrophic damage to pistons and other components in downsized engines.
2017-06-13
WIP Standard
J2932
This document provides test performance requirements for air disc brake actuators for service and combination service parking brake actuators with respect to function, durability and environmental performance when tested according to SAE J2902.
CURRENT
2017-06-12
Standard
AS7106/3A
This document has been declared "CANCELLED" as of June 2017. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index. Cancelled specifications are available from SAE.
CURRENT
2017-06-12
Standard
AS7106A
This document has been declared "CANCELLED" as of June 2017. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index. Cancelled specifications are available from SAE.
2017-06-05
Technical Paper
2017-01-1857
Joshua R. Goossens, William Mars, Guy Smith, Paul Heil, Scott Braddock, Jeanette Pilarski
Abstract Fatigue life prediction of elastomer NVH suspension products has become an operating norm for OEMs and suppliers during the product quoting process and subsequent technical reviews. This paper reviews a critical plane analysis based fatigue simulation methodology for a front lower control arm. Filled natural rubber behaviors were measured and defined for the analysis, including: stress-strain, fatigue crack growth, strain crystallization, fatigue threshold and initial crack precursor size. A series of four distinct single and dual axis bench durability tests were derived from OEM block cycle specifications, and run to end-of-life as determined via a stiffness loss criterion. The tested parts were then sectioned in order to compare developed failure modes with predicted locations of crack initiation. In all cases, failure mode was accurately predicted by the simulation, and predicted fatigue life preceded actual end-of-life by not more than a factor of 1.4 in life.
2017-05-20
Book
Rani Elhajjar
Additive Manufacturing of Aerospace Composite Structures: Fabrication and Reliability introduces the reader to the current state of technologies involved in processing and design of polymer-reinforced fiber composites using additive manufacturing’s automated fiber placement methods, through ten seminal SAE International papers. Currently, the material layup strategy in terms of process selection and manufacturability is usually not prioritized in the design phase. Engineers do not have a good way to see how their design choices can affect the manufacturing process beyond their initial structural-level considerations. The result is typically a large amount of experimental testing necessary to qualify the materials and structures typified in the classical building-block approach. Such an environment makes mistakes difficult to solve and, should redesign be required, obtaining reliable information is hard to piece together.
CURRENT
2017-05-19
Standard
AMS2355M
This specification covers quality assurance sampling and testing procedures used to determine conformance to applicable specification requirements of wrought aluminum alloy and wrought magnesium alloy mill products (except forging stock), and includes quality assurance and testing procedures for rolled, forged, and flash welded rings (see 8.3). Requirements are specified in inch/pound units.
2017-05-18
Article
PCB Piezotronics, Inc.’s family of miniature triaxial ICP accelerometers, Models 356A43, 356A44 and 356A45, are small (0.4 x 0.4 x 0.75 in/10.2 x 10.2 x 19.05 mm), lightweight (4.2 g/0.15 oz) and TEDS (Transducer Electronic Data Sheets) IEEE 1451.4 enabled.
2017-05-18
Journal Article
2017-01-9681
Mohamed El Morsy, Gabriela Achtenova
Abstract Bearing and gear condition monitoring are important to improve a mechanical system reliability and performance. In the early stage of bearing failures, the Bearing Characteristic Frequencies (BCFs) contain very little energy and are often overwhelmed by noise and higher-level macro-structural vibrations, an effective signal processing method would be necessary to eliminate such corrupting noise and interference. Referring to the non-stationary characteristics of roller bearing fault vibration signals, a roller bearing condition monitoring method based on Envelope Process to raw time-domain vibration signal and Autocorrelation enhancement to the residual signal is put forward in this paper. The concept of Envelope and Autocorrelation techniques and its implementation for defect identification are discussed. Also, distinction of bearing fault signal as cyclostationary from periodic signal for gear fault.
2017-05-17
Article
The accuracy of an NO gas sensor (the primary component of NOx) can be compromised when exposed to ambient temperatures above 86°F (30°C) and significantly more so above 104°F (40°C).
2017-05-02
WIP Standard
AMS2223J
This specification covers established inch/pound manufacturing tolerances applicable to copper and copper alloy seamless tubing ordered to inch/pound dimensions. These tolerances apply to all conditions, unless otherwise noted. The term "exclusive" is used to apply only to the higher figure of a specified range.
CURRENT
2017-04-26
Standard
AS9146
This standard defines FOD Prevention Program requirements for organizations that design, develop, and provide aviation, space, and defense products and services; and by organizations providing post-delivery support, including the provision of maintenance, spare parts, or materials for their own products and services. It is emphasized that the requirements specified in this standard are complementary (not alternative) to customer, and applicable statutory and regulatory requirements. Should there be a conflict between the requirements of this standard and applicable statutory or regulatory requirements, the latter shall take precedence.
2017-04-20
Article
Exa Corp. is focusing on the vital and sometimes overlooked aspect of automated drivin: keeping onboard camera lenses and other sensor surfaces clean in all road conditions.
2017-04-20
Article
A new state-of-the-art wind tunnel beginning construction in Ohio in 2017 will add to Honda's growing R&D footprint in the U.S.
2017-04-20
WIP Standard
AS9103B
This standard is primarily intended to apply to new parts and products, but can also be applied to parts currently in production. The standard shall be applicable to all production processes, that influence the variation of KCs, as well as maintenance processes in which KCs are identified. It applies to assemblies and all levels of parts within an assembly, down to the basic materials including castings and forgings, and to organizations that are responsible for producing the design characteristics of the product. It does not apply to lab-scale, pilot, or pre-production processes. However, particular management of some KCs might be required using other methods than those described in the standard, during these phases of a program, when required by the customer or deemed appropriate by the organization (e.g., Engineering department requirement).
2017-04-20
WIP Standard
AS9104/1A
These requirements are applicable to IAQG global sectors when utilizing Aerospace Industry Controlled Other Party (ICOP) schemes for the assessment and certidication of supplier quality systems in accordance with the requirements AS/EN/SJAC 9104.
2017-04-19
WIP Standard
AMS2447E
This specification covers the requirements for thermal spray coatings applied using the high velocity oxygen fuel (HVOF) combustion process. This specification is not intended to be used for duplex coatings, i.e., the application of the coating over a previously applied coating.
2017-04-19
WIP Standard
AMS2442B
This specification establishes acceptance criteria for discontinuities revealed by magnetic particle inspection of parts made from wrought, ferromagnetic materials.
2017-04-19
WIP Standard
AMS2487B
This specification describes the engineering requirements for producing an electrically-insulating, non-powdery anodic coating on titanium and titanium alloys and the properties of such coatings.
2017-04-19
WIP Standard
AMS2673F
This specification covers the requirements for producing brazed joints of aluminum and aluminum alloys by immersion in a molten flux bath.
2017-04-19
WIP Standard
AMS2819C
This specification covers the procedures for identification and marking of bare welding wire by a color code system and marking of spools.
Viewing 1 to 30 of 4282

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