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Viewing 271 to 300 of 19604
Magazine
2014-04-01
Toward smarter manufacturing and materials At the U.K.'s new Advanced Manufacturing Research Center, engineers and innovators have at their disposal some of the world's most advanced design and manufacturing assets for precision engineering. More electric, integrated fuel systems Engine system reliability can be improved by advanced electric architectures, while the reduction of hydraulic components, fuel tubes, and fittings can enhance the maintainability of the engine and minimize pilot workload.
Collection
2014-04-01
This technical paper collection advances the knowledge in the state of the art in all types of sheet metal forming. Topics include using simulated, analytical, numerical and experimental tools and sheet metals for the various forming technologies.
Collection
2014-04-01
This technical paper collection includes papers related to welding and joining of similar or dissimilar materials of plastics, composites, aluminum, magnesium, titanium, and conventional and advanced high strength steels. Papers related to friction stir (spot) welding, ultrasonic welding, resistance welding, arc welding, laser welding, brazing or soldering, riveting and bolting, and adhesive joining, strength, fracture and fatigue of welds, joints and fasteners are covered.
Technical Paper
2014-04-01
Takaaki Kondo, Kentarou Ishiuchi
Abstract To reduce the Body in White (BIW) mass, it is necessary to expand the application of Advanced High-Strength Steels (AHSS) to complex shaped parts. In order to apply AHSS to complex shaped parts with thinner gauge, high formability steel is required. However, higher strength steels tend to display lower elongations, compared with low/medium strength steels. Current AHSS are applied to limited parts for this reason. The new 1.2GPa material, with high formability, was developed to solve this issue. The mechanical property targets for the high elongation 1.2GPa material were achieved by precise metallurgical optimization. Many material aspects were studied, such as formability, weldabilty, impact strength, and delayed fracture. As the result of this development, 1.2GPa AHSS has been applied to a new vehicle launched in 2013.The application of this material was the 1st in the world, and achieved a 11kg mass reduction.
WIP Standard
2014-03-26
This proposed specification aims to cover a new alloy (Ti-54M) in the product form of sheet (<.1875in).
Standard
2014-03-25
The methodology for maximum package size loading is bsed on a mathematical method allowing the calculation of maximum package size tables. This method does not in principal differentiate between bulk loading and cargo system loading. However, some restrictions have to be considered: - Some cargo systems generate pre-determined pallet trajectories. Envelope curves depending on the pallet size and the possible trajectories have to be determined first. - Door geometric limitations (with or without cargo loading system) - Turning limitations due to weight, load geometry and conveyance capability - Securing requirements This document is not intended for airline operational use. It should be used by engineers performing calculations or developing computer programs to produce Maximum Package Size tables specified in AS1825.
Standard
2014-03-25
This SAE Aerospace Recommended Practice (ARP) delineates the minimum operational requirements that will ensure that perishable cargoes in insulated standard airborne containers are kept in prime condition during the ground handling and air transportation cycle for a maximum period of 36 h.
Standard
2014-03-25
The scope of this SAE Aerospace Standard (AS) shall cover the methodology of defining and determining the "internal volumes" of both the main deck and lower deck aircraft cargo compartments. The minimum required clearance between the compartment envelope and the unit load devices (ULDs) shall also be stated in order to provide the maximum ULD external contour and the methodology to define the ULD internal volumes.
Standard
2014-03-25
This SAE Aerospace Standard (AS) establishes the basic requirements for the design, construction and testing of air mode 2.44 m x 2.44 (8 ft X 8 ft) cross-section containers. These containers are to be used exclusively in conjunction with the air mode in freighter versions of wide-body commercial transport aircraft. Air mode containers will normally be on aircraft roller conveying systems and/or on similarly equipped ancillary ground handling devices. Similar requirements for air/surface (intermodal) containers are provided in AS832.
Standard
2014-03-25
This SAE Aerospace Standard (AS) establishes the basic requirements for the specification and testing of air/surface (intermodal) 8 ft x 8 ft (2.44 m x 2.44 m) cross-section containers. The basic rquirements for the air/surface (intermodal) container are presented in Sections 3 to 6 while the detailed design requirements are in Appendix A. Appendix B describes the sections of other standards that apply to air/surface containers. Appendix C describes uniformity of test apparatus and methods. These appendices shall be referred to for important supplemental requirements and procedures for this document. AS4041 presents the requirements for air mode general purpose containers. Requirements for containers to be transported by rotary-wing aircraft are excluded from this document. NOTE: The essential basic and detail criteria are identified by use of the key word "shall." Recommended basic and detail criteria are identified by use of the key word "should," and while notmandatory, are considered to be of primary importance in providing serviceable, economical, and practical air/surface containers.
Article
2014-03-24
The technology organization has developed an innovative process to help reduce the cost of composite component use. Features normally added in a separate operation, such as clips and inserts for threaded fasteners, can now be molded directly onto the back of high-quality composite panels, producing a more cost-effective part than a conventional bonded assembly.
Technical Paper
2014-03-24
Karthikeyan N, Anish Gokhale, Narendra Bansode, Gaurav Lakhe
Abstract Scooters are popular for the legroom available in the front and closed storage space beneath the seat. Engine is located at rear part of the vehicle beneath the storage space and is cooled by forcing the air by a centrifugal fan over the engine surface. Heat is rejected from the engine by the forced cooling and radiation to the surroundings. Storage space gets heated as result of excessive heat rejection from engine. To protect the material of storage space and the items stored in that, it is necessary to avoid heating of the storage space. The work aims to conduct the storage space heating analysis in a scooter. The objective is to propose the design modifications to reduce the storage space heating. The effect of convection and radiation in heating of the storage space is studied. Three dimensional Computational Fluid Dynamics (CFD) analysis, with a commercial code, is carried out to evaluate the heat transfer from the engine to the storage space, this gives a good scope in analyzing the effect of different parameters in avoiding the heating and aids in swift modifications in the design process.
Technical Paper
2014-03-24
Pawut Namklang, Vitoon Uthaisangsuk
Abstract Ultra-High Strength Steels (UHSSs) have been widely used to reduce car body weight and to increase crashworthiness of new generation vehicles. To manufacture such components, hot stamping or press hardening process was developed, in which sheet metal forming at high temperature and quenching procedure were performed successively in a single step. Generally, hot stamped parts exhibit exceptionally high strength properties and low springback effect. In this work, a direct hot stamping process of boron-alloyed steel with a thickness of 1.4 mm was investigated. Temperature evolutions on blank and tools were determined during the experiments. Afterwards, microstructure analysis, hardness measurement and tensile test for different locations, namely, at the bottom and flange of the formed samples were carried out. It was found that final parts after the hot forming mostly showed a fully martensitic microstructure. Yield strength and tensile strength up to 1100 and 1500 MPa, respectively, could be obtained.
Technical Paper
2014-03-24
Daeyong Kim, Hyeon Park, Ji Hoon Kim, Youngseon Lee, Myoung-Gyu Lee
Abstract In this study, numerical simulations of electromagnetic forming (EmF) for automotive sheet metals with flat spiral coil were performed in order to analyze electromagnetic, mechanical behaviors in EmF process. Two automotive sheets which are 5J32 aluminum alloy sheet and DP780 high strength steel sheet having thickness of 1.0mm were utilized. Numerical simulations were conducted with the commercial software LS-Dyna, which is able to fully couple with electromagnetic and mechanical as well as thermal natures in three dimensional spaces. From numerical analysis, electromagnetic quantities such as Lorentz force and mechanical quantities such as deformed shape of sheet metals were examined. At low charge voltage, the simulations of the deformed shape for two workpiece blanks have a good agreement with the experiments.
Technical Paper
2014-03-24
Sang-Woo Kim, Young-Seon Lee
Abstract Recently, the applications of magnesium alloy to automobile and electric parts have been increased because of its high specific strength, excellent machinability, high electrical and thermal conductivity. The efforts of automobile industry to reduce fuel consumption by using lightweight structural materials have accelerated the deep drawing technology of magnesium alloy sheet. In the present study, the basic study to fabricate an automotive compressor case have been carried out. In order to apply ductile fracture criterion to predict the forming failure, critical damage values were determined from uniaxial tensile tests and FE simulations, and then they were expressed as the function of strain rate and temperature. The proposed methodology was applied to design the deep drawing process for fabrication of magnesium automotive compressor case without any defect. Based on the simulation and experimental results, AZ31 EL-cover part 39% lighter than ADC12 die casting EL-cover could be fabricated by warm deep drawing process.
Technical Paper
2014-03-24
Kee-Jin Park, Yong-Sik Kim
Abstract Heat treatment for car body's mold is mainly a manual process which is performed by worker. The performance of this process is affected by workers' skill level, and has limitation to maintain uniform product quality. In this study, we developed high frequency heat treatment robot system that implements OLP type simulator to overcome the limitation of manual process, and to improve and stabilize the quality level. Also, we plan to verify the efficiency of robot system and mechanism stability from the early stage through design verification and simulated analysis in development stage. In addition, we plan to study the way to establish optimized D/B for heat treatment criteria for car body mold such as heat treatment speed, interval, etc. via site experiment.
Standard
2014-03-24
This specification covers methyl alcohol in the form of a liquid.
Standard
2014-03-24
This specification covers a denatured ethyl alcohol in the form of a liquid.
Standard
2014-03-19
This specification covers a titanium alloy in the form of bars, wire, forgings, and flash welded rings 4.000 inches (101.60 mm) and under in nominal diameter or least distance between parallel sides and of stock for forging and flash welded rings.
Standard
2014-03-17
This standard establishes the physical item marking requirements for identificationpurposes for copper and copper-base alloy mill products procured and issued for government activities. Shipment and inspection accpetance markings are not within the scope of this standard.
Book
2014-03-11
Timothy George Thoppil
Unwinding Electric Motors: Strategic Perspectives and Insights for Automotive Powertrain Applications provides an in-depth assessment of the most important technology, manufacturing, and supply chain aspects of the fast-paced world of electric motors. A joint effort that brings together the technology and product strategy experience of the P3 Group and the focused reach of SAE International, Unwinding Electric Motors: Strategic Perspectives and Insights for Automotive Powertrain Applications lends clarity combined with solid data to those interested in understanding the fundamental factors shaping this industry in the next five years. Authored by Timothy G. Thoppil, from the P3 Group, this market study draws on extensive industry experience and is supported by surveys and interviews with industry professionals from OEMs, Tier 1 suppliers, research institutions, and universities. Unwinding Electric Motors: Strategic Perspectives and Insights for Automotive Powertrain Applications offers reliable market intelligence and discernment to the technical and business professionals in search of valuable input to support good decision making.
Standard
2014-03-11
This specification covers a titanium alloy in the form of bars, forgings, and stock for forging.
Standard
2014-03-11
This specification covers one type of titanium alloy plate in the beta-annealed condition.
Article
2014-03-10
The continued use of composite materials in aerospace has revealed other challenges that need to be addressed while the solutions to material and manufacturing cost are reduced. Before the widespread use of the material in transportation vehicles can be realized, safety challenges surrounding the material must be addressed.
Article
2014-03-10
NanoFocus’ μsurf cylinder tool, which will be displayed at the SAE 2014 World Congress April 8-10 in Detroit, provides a nondestructive technique for high-resolution 3-D measurements of the inside of cylinder bores and liners.
Article
2014-03-10
The Objet500 Connex3 color multi-material 3-D printer from Stratasys is the first and only 3-D printer to combine colors with multi-material 3-D printing, according to the company.
Standard
2014-03-10
This specification covers a titanium alloy in the form of bars, forgings, and stock for forging.
Article
2014-03-07
Most rapid prototype parts are brittle or turn limp in warm water, and can only take engineers so far during development. Synergeering Group has developed a way for rapid prototype parts to be functional—on a running engine.
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