Display:

Results

Viewing 151 to 180 of 20087
2015-04-28
Standard
J863_201504
This SAE Recommended Practice describes methods for determining plastic deformation encountered in the forming or drawing of sheet steel.
2015-04-28
Standard
AMS03_14
This SAE Standard gives guidance for - and specifies the requirements for - the electrodeposition of chromium for engineering purposes. It relates to both new articles and also the reclamation of worn or over-machined components. Chromium electrodeposition undertaken for decorative purposes is not considered herein.
2015-04-28
Standard
J1562_201504
Zinc and zinc-alloy coated steel is used to enhance a structure’s protection against corrosion degradation. For the purpose of this SAE Recommended Practice, a galvanized coating is defined as a zinc or zinc-alloy metallic coating. The selection of the optimum galvanized steel sheet product depends on many factors, the most important being: desired corrosion protection, formability, weldability, surface characteristics, and paintability. The trade-offs of these product characteristics are more complex than is the case with uncoated steel sheet products.
2015-04-28
Standard
AMS03_11
This SAE Standard specifies requirements for the processing of iron and steel (excluding corrosion resisting steels) to produce coatings consisting essentially of inorganic phosphates, which are intended to be used in conjunction with supplementary finishes for the protection of the basis metal against corrosion (and in certain cases to give, additionally, anti-wear properties to sliding surfaces).
2015-04-28
Standard
AMS03_9
This SAE Standard specifies the requirements for the electro-deposition of silver on ferrous-base, copper-base, aluminum-base, zinc-base and nickel base materials. It is primarily intended for use on electrical and electronic items which are to be plated with silver to increase the electrical conductivity of the surface. This Standard does not cover the silver plating of threaded items.
2015-04-28
Standard
AS567K
This SAE Aerospace Standard (AS) covers devices whose primary function is the retention of fasteners, except for such devices that are integral with the item being retained.
2015-04-27
Article
Product designers and engineers can now get injection-molded low-alloy steel prototypes and low-volume production parts at Proto Labs, Inc., to complement the company’s existing stainless steel materials for injection molding.
2015-04-27
Article
The BZ-Marker from Markator is suitable for CNC machining centers to generate a durable marking on many different kinds of materials.
2015-04-27
Standard
AMS03_3
This SAE Standard specifies the requirements for the application of sprayed metal coatings of aluminum, zinc, or aluminum-zinc based alloys for the protection of aluminum alloys against corrosion. It does not cover the metal spraying of aluminum armour materials, which should be treated in accordance with the requirements of Def Stan 08-39.
2015-04-27
Standard
AMS03_4
This SAE Standard specifies the special treatments and precautions that are to be observed when protective and other surface treatments are applied to items, including springs, made from steel of specified maximum tensile strength exceeding 1450 MPa. The requirements of this Standard qualify those in process specifications and override the latter where there is conflict. The Standard also gives advice on design, manufacture, and preparation of items prior to cleaning and protection.
2015-04-27
Standard
AMS03_2
This SAE Standard specifies processes for the cleaning of metal surfaces to remove any extraneous or undesirable material or deposits at any stage of manufacture, storage or service and for the preparation of these surfaces for further treatment. Any necessary stress-relieving treatments are also included. This Standard does not override special preparatory procedures specified in individual Defence Standards, Defence Specifications, DTD Process Specifications, DG Ships Specifications and Naval Defence Standards. It also does not cover cleaning operations associated with the maintenance of internal combustion engines, the preliminary removal of heavy deposits of oil, grease, or dirt accumulated during operational service, preparations for welding and the cleaning of electrical contacts.
2015-04-22
Standard
USCAR40-1
This guideline is applicable to existing lead solder production products that will change to lead-free solder processes to meet the ELV Directive 2000/53/EC Annex II, exemption 8B requirements. This guideline is applicable to similar products used by multiple OEM's that have the same manufacturing processes/equipment. The intent is to streamline the supplier's environmental testing via common qualification to reduce timing, quantities, and costs.
2015-04-17
Article
Delcam will launch in May the 2015 R2 version of its PowerSHAPE Pro software, which includes new options for reverse engineering as well as improvements to speed up and simplify the editing of product designs to make them more suitable for manufacture.
2015-04-16
Article
mycon developed a new coating system that is suitable for coating and painting longer parts, e.g., wires, belts, tubes, rods, and profiles.
2015-04-16
WIP Standard
AMS6479D
This specification covers a special aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
2015-04-16
WIP Standard
AMS6440S
This specification covers a low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
2015-04-15
Standard
AIR5367
This SAE Aerospace Information Report (AIR) provides information related to machining of composite materials, components and structures. This document is intended to supplement the machining processes and guidelines provided in OEM repair manuals and structural repair manuals. It is not intended to supersede the approved data provided in OEM repair documents.
2015-04-15
Book
“Spotlight on Design” features video interviews and case study segments, focusing on the latest technology breakthroughs. Viewers are virtually taken to labs and research centers to learn how design engineers are enhancing product performance/reliability, reducing cost, improving quality, safety or environmental impact, and achieving regulatory compliance. Just how prevalent is the problem of counterfeit electronic parts? What are the consequences of using sub-par components in safety or mission critical systems? The Federal Aviation Administration estimates that 2% of the 26 million airline parts installed each year are counterfeit, accounting for more than 520,000 units, maybe more.
2015-04-14
Technical Paper
2015-01-1723
Dieter Gabriel, Thomas Hettich
Abstract Fuel economy legislation is requiring further improvements to piston friction reduction as well as additional gains in thermal efficiency. A piston material change from aluminum to steel is enabling advancements in both demands. Furthermore, steel material properties lead to increased piston strength, robustness and durability. All this can be achieved at a lower compression height compared to an aluminum reference piston. Therefore, piston mass can be reduced despite the increase in material density. Since steel pistons require cooling of the combustion bowl region and the ring belt just like the aluminum counterpart, MAHLE implemented a new innovative metal joining technology by using laser welding to generate a cooling gallery. The TopWeld® concept offers design flexibility which cannot be matched by any other welding process.
2015-04-14
Technical Paper
2015-01-1725
Gerhard Konrad Flores
Abstract The use of form honing contributes to energy efficiency of modern internal combustion engines, especially to the reduction of CO2. Until now the production of internal combustion engines has required cylindrical bores with high shape and surface quality. This machined macro form is not maintained for the function of the engine due to mechanical and thermal influences. During operation they cause complex distortion mechanisms which significantly deviate from the desired cylinder form. Therefore Gehring developed a form honing process that does not produce the cylindrical bore form as its goal, but gives instead the expected cylindrical deformations having the quasi cylindrical bore geometries under specific operational conditions. Furthermore the current development of form honing considers the friction of the piston skirt of the cylinder operation temperature with specific clearance in the lower part of the bore.
2015-04-14
Technical Paper
2015-01-1736
Justin Cartwright, Ahmet Selamet, Robert Wade, Keith Miazgowicz, Clayton Sloss
Abstract The heat rejection rates and skin temperatures of a liquid cooled exhaust manifold on a 3.5 L Gasoline Turbocharged Direct Injection (GTDI) engine are determined experimentally using an external cooling circuit, which is capable of controlling the manifold coolant inlet temperature, outlet pressure, and flow rate. The manifold is equipped with a jacket that surrounds the collector region and is cooled with an aqueous solution of ethylene-glycol-based antifreeze to reduce skin temperatures. Results were obtained by sweeping the manifold coolant flow rate from 2.0 to 0.2 gpm at 12 different engine operating points of increasing brake power up to 220 hp. The nominal coolant inlet temperature and outlet pressure were 85 °C and 13 psig, respectively. Data were collected under steady conditions and time averaged. For the majority of operating conditions, the manifold heat rejection rate is shown to be relatively insensitive to changes in manifold coolant flow rate.
2015-04-14
Technical Paper
2015-01-0737
Sadegh Poozesh, Nelson Akafuah, Kozo Saito
Abstract Lack of a precise control over paint droplets released from current coating sprayers has motivated this study to develop an atomizer capable of generating a uniform flow of mono-dispersed droplets. In the current study, a numerical investigation based on CFD incorporating volume of fluid (VOF) multiphase model has been developed to capture the interface between air and paint phases for a typical atomizer equipped with piezoelectric actuator. Effects of inlet flow rate and actuator frequency on ejected droplets' characteristics, droplet diameter and their successive spacing are studied in detail. It will be shown that for a determined flow rate of paint, there is an optimum actuator frequency in which droplet size is minimum. Besides, there exists a direct relationship between the inlet paint velocity and obtained optimal actuator frequency.
2015-04-14
Technical Paper
2015-01-0531
Hiroyuki Yamashita, Hiroaki Ueno, Hiroyuki Nakai, Takahiro Higaki
Abstract When the strain is temporarily stopped during tensile testing of a metal, a stress relaxation phenomenon is known to occur whereby the stress diminishes with the passage of time. This phenomenon has been explained as the change of elastic strain into plastic strain. A technique was devised for deliberately causing strain dispersion to occur by applying the stress relaxation phenomenon during stamping. A new step motion that pause the die during forming was devised; it succeeded in modifying the deep-draw forming limit by a maximum of 40%. This new technique was verified through tensile and actual stamping tests. It was confirmed that the use of step motion causes the strain to disperse, thereby modifying the deep draw forming limit. The degree to which the forming limit is modified is dependent on the stop time and the temperature.
2015-04-14
Technical Paper
2015-01-0524
Maniraj Perumal, Baskar Anthonysamy, Ashokkumar Sundaramoorthy
This method and its special process are particularly suited for the production of Porous free combustion chamber prototype aluminium cylinder head casting. Current methods for producing porous free combustion chamber are graphite coating and CI/Cu metal chill which are moderately effective in achieving porous free combustion chamber. However, these current methods have serious drawbacks like high rejections due to blow holes/gas porosity generated from graphite coating and fine porosity due to prolonged cooling because of slow rate of cooling while peak temperature of metal chills. The present work shows how this goal can be achieved in cylinder head casting of single cylinder high speed engine. Fundamental micro structural investigations are shown as well as the results of tensile tests, high temperature strength, corrosion behavior and static and dynamic component testing.
2015-04-14
Technical Paper
2015-01-0582
Deepak Ranjan Bhuyan, Sreekanth Netapalli, Sathya Dev, Soundarya Srinivasan
Abstract Springback prediction for stamped components is a challenging task for Automotive Industry. Automotive Manufacturers are working to reduce the springback effect of sheet metal stampings caused due to elastic behavior of materials with the help of changes to manufacturing process and part geometry. Recent development in Finite Element Analysis (FEA) studies made it possible for the industry to rely on stamping simulation. There is always a gap between the springback predicted from stamping simulation and the actual stamped part. Currently FEA techniques are trying to close this gap. The objective of this study is to minimize this gap using DFSS method for predicting the springback and optimizing the simulation parameters with the help of LS-Dyna FEM tool. The behavior of material with different simulation parameters has been studied in this paper and the ones that best correlate with actual data are identified.
2015-04-14
Technical Paper
2015-01-0551
Qiuren Chen, Haiding Guo, John V. Lasecki, John Hill, Xuming Su, John J. Bonnen
Abstract The fatigue strength and failure behavior of A5754-O adhesively bonded single lap joints by a hot-curing epoxy adhesive were investigated in this paper. The single lap joints tested include balanced substrate joints (meaning same thickness) and unbalanced substrate joints, involving combinations of different substrate thicknesses. Cyclic fatigue test results show that the fatigue strength of bonded joints increase with the increasing substrate thickness. SEM and Energy Dispersive X-ray (EDX) were employed to investigate the failure mode of the joints. Two fatigue failure modes, substrate failure and failure within the adhesive were found in the testing. The failure mode of the joint changes from cohesive failure to substrate failure as the axial load is decreased, which reveals a fatigue resistance competition between the adhesive layer and the aluminum substrate.
2015-04-14
Technical Paper
2015-01-0545
Jeong Kyun Hong
Abstract As the automotive industry seeks to remove weight from vehicle chasses to meet increased fuel economy standards, it is increasingly turning to composites and aluminum. In spite of increasing demands for quality aluminum alloy spot welds that enable more fuel efficient automobiles, fatigue evaluation procedures for such welds are not well-established. This article discusses the results of an evaluation Battelle performed of the fatigue characteristics of aluminum alloy spot welds based on experimental data and observations from the literature. In comparison with spot welds in steel alloys, aluminum alloy spot welds exhibit several significant differences including a different hardness distribution at and around the weld, different fatigue failure modes, and more. The effectiveness and applicability of the Battelle structural stress-based simplified procedure for modeling and simulating automotive spot welds has previously been demonstrated by Battelle investigations.
2015-04-14
Technical Paper
2015-01-1612
Wei Liu, Gangfeng Tan, Jiafan Li, Xin Li, Fuzhao Mou, Yongqiang Ge
Abstract The hydraulic retarder is a significant auxiliary braking device [1] for the heavy duty vehicle. Traditionally, cooling circulatory system of the hydraulic retarder was coupled with the engine cooling system [2], and the thermal energy of the transmission medium would be cooled by the engine radiator ultimately. For this scheme, radiator's spare heat removal capacity could be fully utilized whereas the cooling system is very complicated and is hard to maintain. Furthermore, the corresponding of thermal management system lags behind the power change of the retarder. In this research, integrated cooling evaporation system is developed for the hydraulic retarder, which makes the cooling water contact with the transmission medium through the stator wall, so that it can rapidly response to the thermal variation of the retarder, keep the stability of the oil temperature and meanwhile reduce the risk of cooling medium leakage.
2015-04-14
Technical Paper
2015-01-0475
Truong Nguyen, John Bell
Abstract Modern automotive electrical and electronic architecture is comprised of the battery and charging system, power distribution boxes, electronic control units, electrical devices, grounds, and the means of connecting all of these together - the wire harness or Electrical Distribution System (EDS). As automotive electrical content and complexity increases, it becomes imperative to optimize the weight, size, cost, and manufacturability of a vehicle [1]. In terms of an EDS, the most potential gain can be realized if the EDS supplier and vehicle Original Equipment Manufacturer (OEM) work together during the advanced electrical & electronic architecture development and packaging design process. Traditionally, the electrical content, harness partitioning, and packaging locations are designed by the vehicle OEM with limited advanced input from the EDS supplier.
2015-04-14
Technical Paper
2015-01-0506
Toshiyuki Kondo, Shinichiro Watanabe, Nobuhiro Nanba
Abstract Today, conventional requests for automation and modern requests for flexibility in handling product diversity and changes in production volume regarding assembly operation are increasing. In order to satisfy those, the “Innovative Automation Cell” (Refer to Figure 1) has been proposed as an innovative assembly production system in lieu of an assembly line operation, which has been continuing with the use of automatic conveyance. Furthermore, technical developments were implemented, such as “Real-time Position Attitude Correction Technology” and “High-speed Emergency Recovery System”, as well as “Assembly Operation Support System”, to make an easy system for an operator, so as to minimize reduction of run rate in mass production practices. This article addresses the concept of the “Innovative Automation Cell”, the details of the developed technology, the effects of introduction to mass production, and future issues.
Viewing 151 to 180 of 20087

Filter