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Viewing 151 to 180 of 3516
2015-04-14
Journal Article
2015-01-0453
Zhimin Xi, Hao Pan, Yan Fu, Ren-Jye Yang
Abstract To date, model validation metric is prominently designed for non-dynamic model responses. Though metrics for dynamic responses are also available, they are specifically designed for the vehicle impact application and uncertainties are not considered in the metric. This paper proposes the validation metric for general dynamic system responses under uncertainty. The metric makes use of the popular U-pooling approach and extends it for dynamic responses. Furthermore, shape deviation metric was proposed to be included in the validation metric with the capability of considering multiple dynamic test data. One vehicle impact model is presented to demonstrate the proposed validation metric.
2015-04-13
Article
The Ohio State University student team revealed the vehicle it will use to try to break its own world land speed record—307 mph—with an over 400-mph mark. The 38-ft-long (11.6-m) vehicle contains 2000 A123 pouch cells and runs a four-wheel-drive system with two motors design-rated at 3000 hp (2238 kW).
2015-04-10
WIP Standard
AMS2477B
This specification covers the requirements for a low-electrical-resistance chemical conversion coating on aluminum and aluminum alloy parts.
2015-04-10
WIP Standard
AMS2424G
This specification covers the engineering requirements for electrodeposition of a low-stressed nickel and the properties of the deposit.
2015-04-10
WIP Standard
AMS2449A
This specification covers engineering requirements for the grinding of tungsten carbide High Velocity Oxygen/Fuel (HVOF) thermal spray coatings applied to high strength steels (220 ksi and above). This process has been used typically to grind tungsten carbide HVOF coatings applied in accordance with AMS 2447 or AMS 2448 to high strength steels for applications requiring wear, heat, and corrosion resistance or dimensional restoration, such as aircraft landing gear components, However, usage is not limited to such applications. This process specification does not cover superfinishing of HVOF applied coatings.
2015-04-10
WIP Standard
AMS2546A
This specification covers the requirements for computer controlled laser peening of metal part surfaces to induce residual compressive stresses at and beneath the surface.
2015-04-10
WIP Standard
AMS2410L
This specification covers the engineering requirements for electrodeposition of silver on other metals, usually with a nickel strike between the basis metal and the silver.
2015-04-10
WIP Standard
AMS2680D
This specification defines the procedures and requirements for joining metals and alloys using the electron-beam welding process.
2015-03-31
Article
Gill Sensors & Controls offers the GScondition monitoring sensor range family to reduce unplanned breakdowns in industrial machine applications.
2015-03-26
WIP Standard
AS9101F
This document standardizes the requirements for conducting and reporting of QMS audits. It can be used at all levels of the supply chain by organizations around the world. It provides requirements for an audit and reporting process, based on the: - process and continual improvement approach defined in 9100-series standards; - specific aviation, space, and defense additions in 9100-series standards; - use of common audit tools; and - uniform, transparent, and standardized reporting of audit results.
2015-03-24
Article
In the area of electronics enclosures, traditional metal structures conduct and spread heat over large surfaces, but composites act as insulation. Heat generated by components causes internal temperatures to rise and has detrimental impact on the performance and reliability of the electronics.
2015-03-24
Article
Instron offers the AVE 2 second-generation advanced video extensometer non-contacting strain measurement device.
2015-03-18
Article
Keysight Technologies has enhanced its B1505A power-device analyzer/curve tracer, allowing it to characterize all key parameters of on-wafer and packaged devices for semiconductor development.
2015-03-17
Standard
AS13002
This document covers the process to be applied to design characteristics (as defined in AS9102), parts or inspection processes as defined by the purchaser. Design characteristics not included within the scope include electronic, electromechanical or mechanical systems where alternative means of acceptance are approved such as through acceptance test procedures (ATPs). This document does not define processes for identifying or communicating the classification of the parts or design characteristics. This document does not define the procedure to qualify a supplier to undertake these requirements. It is expected that each purchaser will have a procedure to manage the flow-down of these requirements. This document applies to suppliers that demonstrate adequate proficiency in applicable process control methods as determined by the purchaser.
2015-03-12
Standard
AS9016A
The aviation, space, and defense industries rely on the development and manufacture of complex products comprised of multiple systems, subsystems, and components each designed by individual designers (design activities) at various levels within the supply chain. Each design activity controls various aspects of the configuration and specifications related to the product. When a change to design information is requested or required, the change has to be evaluated against the impacts to the higher-level system. Proposed changes to design information that the design activity identifies to be minor and have no effect on their product requirements or specifications have the potential to be concurrently implemented and approved, where authorized to do so. Changes that affect customer mandated requirements or specifications must be approved prior to implementation.
2015-03-05
Article
Applus IDIADA listened to customer feedback in developing its new DynaWheel-III device, focusing on making the system even more reliable and easy-to-use. The wheel position measurement system is composed of two separate parts: the mechanical arms with six absolute optical encoders and the new electronic box (DW-Box), providing real-time calculation of wheel position.
2015-03-03
Article
dSPACE has launched a new, compact control system development platform for laboratory use, MicroLabBox, that offers high computing power and comprehensive functionalities.
2015-03-03
Article
To sharpen a significant aspect of its marque identity, a tunnel is at the heart of company’s new €4.5 million Lighting Assistance Center (LAC) at its Ingolstadt, Germany, headquarters is helping it develop new technologies including matrix laser forward lighting.
2015-02-25
Article
Delcam’s 2015 version of its PowerINSPECT inspection system includes automatic collision avoidance, faster import of large CAD files, quicker preparation of longer inspection reports, and improved display of results from point-cloud data, plus many other customer-requested enhancements.
2015-02-24
WIP Standard
AS9146
Develop a single requirements standard for Foreign Object Damage/Debris 9FOD) Prevention.
2015-02-24
WIP Standard
AS9147
Parts that are declared as unsalvageable are difficult to trace from the workshop to the destruction/recycling area
2015-02-19
Article
Conventional CT scanners cannot accommodate long or bulky aircraft components.
2015-02-17
WIP Standard
AMS2355L
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.
2015-02-13
WIP Standard
ARP4955B
The purpose of this SAE Aerospace Recommended Practice (ARP) is to establish guidelines for the measurement of static and dynamic characteristic properties of aircraft tires. It is intended as a general guide toward standard practice, but may be subject to frequent changes to keep pace with experience and technical advances.
2015-02-12
Article
NASA has expanded its use of Exa's PowerFLOW software for the simulation of concepts to reduce aircraft noise within NASA's Environmentally Responsible Aviation project.
2015-02-11
Article
At the McKinley Climatic Laboratory at Eglin AFB, an F-35 will ultimately be tested in all the meteorological conditions representative of those locations from which it will operate, ranging from the heat of northern Australia to the bitter cold of the Arctic Circle.
2015-02-05
Standard
AS13003
This standard defines the minimum requirements for conducting Measurement Systems Analysis (MSA) for variable and attribute assessment on characteristics as defined on the drawing or specification. It does not define the detailed analytical methods for each type of study as these can be found in existing published texts (see Section 2 for guidance).
2015-02-03
Article
LaVision’s internal combustion optical sensor product family provides a series of techniques for the measurement of quantitative, in-cylinder, engine-relevant values.
2015-02-03
Article
Intertek recently acquired an ETS Solutions vibration and mechanical shock system that will enable the company to double its existing capacity on high payload testing.
2015-01-23
WIP Standard
AMS2801C
This specification covers the engineering requirements for heat treatment by part fabricators (users) or their vendors or subcontractors, of parts (See 1.1.2) made from the following titanium alloys: Commercially Pure 6Al-4V(ELI) 3Al-8V-6Cr-4Mo-4Zr 3Al-2.5V 6Al-6V-2Sn 13V-11Cr-3Al 5AI-2.5Sn 6Al-2Sn-4Zr-2Mo 10V-2Fe-3Al 8Al-1Mo-1V 6AI-2Sn-4Zr-6Mo 15V-3Cr-3Al-3Sn
Viewing 151 to 180 of 3516

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