Refine Your Search

Topic

Author

Affiliation

Search Results

Video

Polycarbonate Glazing - Accelerated Wiper Testing, Surface Characterization and Comparison with On-Road Fleet Data

2012-05-23
Exatec� PC glazing technology team, has developed advanced weathering and abrasion resistant coatings technology that can be applied to protect polycarbonate. It is of particular interest to quantify and understand the factors that determine the surface abrasion performance of coated PC in rear window and backlight applications that have a wiper system. In the present study we describe Exatec's lab scale wiper testing equipment and test protocols. We also describe adaptation of optical imaging system to measure contrast and nano-profiling using nano-indenter, as post wiper surface characterization methods. These methods are more sensitive to fine scratches on glazing surface than standard haze measurement and mechanical profilometry. Three coating systems were investigated; Siloxane wetcoat (A), Siloxane wetcoat (B), and Siloxane wetcoat (B) plus plasma coat (Exatec� E900 coating). The performance comparisons were made using all these surface characterization methods.
Video

Business Model for Successful Commercialization of Aircraft Designs

2012-03-21
In any new aircraft development program there are many important design decisions that determine profitability potential. The key to making new aircraft profitable is to design features that will command more money than the cost to provide them within the market's ability to absorb them. The business model in this paper shows how to predict or find: 1) the costs to provide various aircraft features; 2) the values that aircraft buyers place on these features; 3) the amount of money that buyers have to commit to them, 4) the open spaces in the market in which to place new designs and 5) the predicted profits from new designs. In this process, this paper extends previous work on the law of value and demand, which states that attributes determine value; value determines price; and that price determines demand. This four-dimensional, non-negative system hosts a business model that describes the features needed to enable aircraft designs to go from concepts to profitable assembly lines.
Video

Enabling New Optical Fiber Applications in Avionics Networks

2012-03-21
Optical fiber has begun replacing copper in avionic networks. So far, however, it has been mainly restricted to non-critical applications (video transmission to the flight deck, IFE?). In order to take advantage of the high-bandwidth, low weight, no EMI properties of optical fibers in all data transmission networks, it will be necessary to improve the testing. One part of the puzzle, which is still missing, is the self-test button: the possibility to check the network and detect potential failures before they occur. The typical testing tool of a technician involved in optical fiber cables is the ?light source ? optical power meter? pair. With this tool, one can measure the insertion loss of the fiber link. A second important parameter, the return loss at each optical connector, is not analysed. In addition, this is only a global measurement, which does not allow the detection of possible weak points.
Video

Automating AFP Tuning Using a Laser Sensor

2012-03-22
Electroimpact Automatic Fiber Placement (AFP) machines lay-up composite parts by accurately placing carbon fiber tow (strips of impregnated carbon fiber) on a mould. In order to achieve high accuracy at high speeds, the processes of feeding and cutting tows must be tuned. Historically, the tuning has been a time-consuming, manual process. This paper will present a methodology to replace manual measurements with an automated laser, improve measurement speed by an order of magnitude, improve accuracy from +/? 0.020? (manual) to +/? 0.015? (laser), and eliminate human error. Presenter Joshua Cemenska, Electroimpact Inc.
Technical Paper

Numerical Analysis of the Influences of Wear on the Vibrations of Power Units

2020-09-30
2020-01-1506
Numerical Analysis of the Influences of Wear on the Vibrations of Power Units Yashwant Kolluru, Rolando Doelling eBike Department Robert Bosch GmbH Kusterdingen, Germany yashwant.kolluru@de.bosch.com rolando.doelling@de.bosch.com Lars Hedrich Institute of Informatics Goethe University Frankfurt Frankfurt, Germany hedrich@em.informatik.uni-frankfurt.de The prime factor, which influences vibrations of electro-mechanical drives, is wear at the components. This paper discusses the numerical methods developed for abrasion, vibration calculations and the coupling between wear and NVH models of drive unit. Wear is a complex process and understanding it is essential for vibro-acoustics. The paper initially depicts finite element static model used for wear calculations. The special subroutines developed, aids in coupling the wear equations, various contact and friction formulations to the numerical model.
Book

Navigation and Intelligent Transportation Systems

1998-09-15
Navigation and Intelligent Transportation Systems contains 40 papers covering the technical and functional aspects of these systems including: 3D mapping, route guidance, cellular phone access, electronic compasses, and the history and future of navigation systems. The book also covers the important role of navigation in Intelligent Transportation Systems concerned with traffic management, traveler information, vehicle control systems, commercial vehicle operations, and public and rural transportation systems. The book concludes with a chapter on the Intelligent Vehicle Initiative, a joint program between the National Highway Traffic Safety Administration, the Federal Highway Administration, and the Federal Transit Administration.
Technical Paper

Material Handling in the Pontiac Assembly Plant

1929-01-01
290072
CONVEYORS and handling systems often are planned and installed after a building is erected. The Pontiac plant, described in this paper, is an exception because it was designed without limitations as to space and for a definite production program. With the aid of photographs and floor plans on which the positions from which the photographs were taken are indicated, the complete production line of the plant is shown in detail. The order of assembly and the points at which various units are applied to the chassis are shown; also the locations of the storage spaces for many of the parts and the provisions for transporting them to the assembly line. Among the striking features of the chassis-assembly line is a hump, midway of the length of the building, which raises the chassis to the mezzanine level to allow passage underneath.
Technical Paper

The Application of Photoelasticity to the Study of Indeterminate Truss-Stresses

1932-01-01
320068
THIS paper contains a brief description of the history, theory and application of photoelasticity, which is a new and useful optical method of stress analysis. A simple, cheap and compact photoelastic polariscope developed for the purpose is described. The application of photoelasticity to indeterminate truss-stress analysis produces quantitative stress measurements within a maximum experimental error of 6 per cent. The tests yield with considerable speed and convenience information concerning stress concentrations at corners and fillets that cannot be obtained by other methods. The author describes a photoelastic test of an airplane-wing-rib model whereby the axial and bending stresses in the members are determined and severe stress concentrations at the spar corners are noted.
Technical Paper

Report of the Tractor and Implement Safety Lighting Program

1954-01-01
540224
PROPER lighting of slow-moving farm vehicles-a necessity when these vehicles travel the highways at night-was the problem tackled by the SAE Tractor and Implement Safety Light Subcommittee and a corresponding FEI committee. Among the results of their work, which is reported in this paper, are: 1. A standard breakaway connector for the tractor and implement lighting system. 2. A telescoping staff lamp that can be extended to the left, when needed for safety, to show the left-hand end of an implement. 3. Changes in the Uniform Act Regulating Traffic on Highways to permit use of such a staff lamp. 4. A lamp with an extension cord for use where a staff lamp is not long enough. 5. A proposed standard bracket for holding the extension-cord lamp.
Video

SAE Eye on Engineering: Lexus Unveils Door Cameras on new ES300h

2020-02-28
Replacing conventional door-mounted mirrors with compact cameras is a future trend that�s finally arrived. In this episode of SAE Eye on Engineering, Editor-in-Chief Lindsay Brooke looks at the new door cameras on the Lexus ES300h. SAE Eye on Engineering also airs Monday mornings on WJR 760 AM Detroit's Paul W. Smith Show.
Book

2013 and 2014 Passenger Car Yearbook

2013-11-25
This set consists of two books, 2013 Passenger Car Yearbook, and 2014 Passenger Car Yearbook. Both include articles that were written by the award-winning editors of Automotive Engineering International. Both books detail the key engineering developments in the passenger vehicle industry of that year. Each new car model is profiled in its own chapter with one or more articles.
Technical Paper

Measuring Appearance Characteristics of Anodized Aluminum Automotive Trim

1965-02-01
650513
In evaluating appearance of anodized aluminum, the most important kinds of glossiness are commonly termed distinctness of image, bloom, and haziness. To obtain a simple, meaningful set of quantitative numbers, the various kinds of glosses are related to specific portions of a goniophotometric curve. The technique is applicable to mirror-like metal finishes, to etched and patterned metal surfaces, and to ceramic and paint coatings. This method agrees well with visual ratings, is sensitive to minimum visually detectable differences within products, and provides a means for numerically classifying different products without need for material standards for calibration.
Technical Paper

Control of Double Images in Automobile Glass

1965-02-01
650536
This paper first examines the optical principles involved in the formation of double images so that glass may be evaluated for this property in the design stage of automobile windshields. It then describes a new instrument, the local curvature and wedge meter, which has proved to be useful in determining the extent to which each of the three factors of curvature, inclination, and wedge has contributed to the presence of double images.
Technical Paper

A Radioactive Krypton Diffusion Technique for Temperature Mapping of Turbine Blade Surfaces

1965-02-01
650704
Development of turbine blade cooling techniques have been prompted by the demand for increased power and efficiency from existing engine envelopes. Accurate determination of temperature profiles exhibited by the turbine blades during engine operation expedite the attainment of optimum design. This paper describes the use of radioactive krypton-85 to determine the maximum temperature experienced by the blade surface during the engine operating period. Apparatus and procedures developed after considerable experimentation are described, and typical temperature evaluations are presented.
Technical Paper

Computer-Aided Design in Body Engineering

1966-02-01
660153
Mathematical definition and manipulation of part surfaces within a computer assists the body engineer in the design of automobile components and in the evaluation of tentative designs. Methods have been developed to design hardware mechanisms rationally, to evaluate optical distortion characteristics of tentative windshield designs, and to generate data about the effects of component tolerances. Methods have been established for the application of analytic surface methods to actual body parts.
Technical Paper

Four Tests for Consistency of Automotive Brake Linings

1966-02-01
660412
Automotive brake lining is a complex composite of organic resin binder, asbestos fiber reinforcement, and friction modifying fillers. Laboratory and vehicle tests used to select and qualify specific formulations are time consuming and not generally suitable for quality control. A new integrated system of tests is therefore proposed. The tests are X-ray radiography and optical resinography for structural definition; thermal analysis for chemical composition and state of cure; and a short sliding friction (drag) test utilizing the widely available SAE J661 friction materials test machine. The tests are described in detail and typical results are presented.
Technical Paper

Aerodynamic Test Techniques

1966-02-01
660464
Contained in this paper are detailed explanations and criticisms of aerodynamic tests conducted for the automotive industry. Using 1/10, 3/8, and full scale vehicles, tests were conducted for aerodynamic drag and lift, stability and control, pressure distribution, and flow visualization. Tests were conducted in wind tunnels and on the road. The advantages and disadvantages of each method are discussed and explained at length.
Technical Paper

Visual Considerations of Man, the Vehicle, and the Highway

1966-02-01
660004
This treatise represents a short physiological optics review for designers and users of automobiles. It starts with a description of the macroscopic and microscopic anatomy of the visual organ. The movements of the eyes, the visual field, and fixation field are described in a more detailed way, together with the sensory mechanisms which comprise adaptation, contrast sensitivity, visual acuity, perception of motion, and perception of direction and distances. In view of their importance in driving, special attention was given to the problems of glare, the time factor in vision, and the visual problems in motion. A comparison of visibility of red versus green concludes the paper. An effort has been made to confine the text to the phenomena which are basic and necessary for general understanding and have an obvious bearing on automotive design and driving procedures.
X