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Rattle Evaluation: Sunroof Glass Against Roof Flange

Ford Motor Company-Douglas Demori, Fernando Camargo, Karine Chagas, Marcos Paulo de Oliveira, Thais Cardoso
Webasto Roof Systems Brasil Ltda-Oswaldo Tursi Neto
  • Technical Paper
  • 2019-36-0140
Published 2020-01-13 by SAE International in United States
Sunroof is installed in the vehicles to generate a better satisfaction for customer. Normally, the glass is maintained closed or fully opened, when the user would like to exterior air to get in. The glass runs in the sunroof rail that interacts directly with the roof skin and the roof reinforcement, where the whole sunroof structure is fixed. In general, sunroofs are equipped with two stages button, were the final or second stage, more used by users, allows the glass to move until the final position directly, without stops. Even though, the first stage could move the glass according user desire. For validation, the vehicle runs in several roads in order to capture any unusual response given by the sunroof. During specific test validation created, the glass was been positioned in the critical region that by design has the minimum distance against the roof flange. Consequently, to solve the issue found, all the possible interactions were measured as the roof profile, flange height, sunroof dimensions and sunroof installation. Hence, all boundary conditions must be under…
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Measurement of Oil Transport Phenomena around Piston in Optical Engine Using Photochromic Visualization Technique (Visualization and Quantification of Oil Film Behavior under Low Speed and Low Oil Temperature Condition)

TPR CO., LTD-Seiji TAMAKI, Tetsuya NANGOU
Tokai University, Graduate School of Engineering-Kazaki KURATSUJI
  • Technical Paper
  • 2019-01-2365
Published 2019-12-19 by SAE International in United States
To elucidate the behavior of oil film on the piston land, the visualization experiments around the piston using an optical engine with a glass liner was conducted. The photochromic visualization technique was successfully applied. The oil film above the top ring gap moved toward the piston head under each throttle condition. The oil film velocity in each engine stroke was successfully calculated from the image processing, and it was confirmed that the direction of movement and the velocity is different with the throttle condition and the engine stroke. The rapid transport of oil film on the 2nd land under the engine brake like condition was captured and it was supposed that this type of oil transport phenomena is the cause of high oil consumption under engine brake condition.
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Molecular Engineering for Mechanically Resilient and Stretchable Electronic Polymers and Composites

Aerospace & Defense Technology: December 2019

  • Magazine Article
  • 19AERP12_10
Published 2019-12-01 by SAE International in United States

Establishing the design criteria for elasticity and ductility in conjugated polymers and composites by analysis of the structural determinants of the mechanical properties.

The ability to predict the mechanical properties of organic semiconductors is of critical importance for roll-to-roll production and thermomechanical reliability of organic electronic devices. This research describes the use of coarse-grained molecular dynamics simulations to predict the density, tensile modulus, Poisson ratio, and glass transition temperature for poly(3-hexylthiophene) (P3HT) and its blend with C60. In particular, it is shown that the resolution of the coarse-grained model has a strong effect on the predicted properties.

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Mathematical Technique Quickly Tunes Next-Generation Lenses

  • Magazine Article
  • TBMG-35480
Published 2019-11-01 by Tech Briefs Media Group in United States

Most of us know optical lenses as curved, transparent pieces of plastic or glass, designed to focus light for microscopes, spectacles, cameras, and more. For the most part, a lens’ curved shape has not changed much since it was invented many centuries ago.

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Chevy reveals 2020 Corvette Stingray convertible, C8.R racer

Automotive Engineering: November/December 2019

Bill Visnic
  • Magazine Article
  • 19AUTP11_14
Published 2019-11-01 by SAE International in United States

Reinforcing the Corvette's long association with astronauts, Chevrolet unveiled the convertible version of its all-new, mid-engine-layout 2020 Corvette Stingray in Cape Canaveral in early October. Executive chief engineer Tadge Juechter, underscoring the car's no-compromises performance and comparatively affordable price, called it a “no-lose proposition” for enthusiasts considering the new Corvette but also desiring a more open-top experience. When it goes into production in the first quarter of 2020, the Corvette Stingray convertible will start at $67,495 - $7,500 more than the 2020 Stingray coupe, which was widely celebrated for its aggressive $59,995 base price.

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Bringing Precision Anamorphic Micro-Optics to Consumer-Level Laser Applications

  • Magazine Article
  • TBMG-35475
Published 2019-11-01 by Tech Briefs Media Group in United States

The use of laser light for precise illumination has been limited to high-end applications like optical lithography or small niche markets like measurement technologies. Now that such industries as automotive and consumer electronics are developing and ramping up the production of LIDAR and 3D sensors, laser illumination is scaling in a new direction. For imaging applications, optics made of polymers are already the first choice for such devices as smart cameras. But in order to deliver glass micro-optics with better performance and long-term stability, the cost structure of injection molded polymer optics needed to be addressed.

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New-Vehicle Collision Repair Information

Motor Vehicle Council
  • Ground Vehicle Standard
  • J2376_201910
  • Current
Published 2019-10-28 by SAE International in United States
This SAE Recommended Practice defines the various types of information required by the collision repair industry to properly restore light-duty, highway vehicles to their pre-accident condition. Procedures and specifications are defined for damage-related repairs to body, mechanical, electrical, steering, suspension, and safety systems. The distribution method and publication timeliness are also considered.
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Optimization of RF Magnetron Sputtering Parameters for Deposition of Zinc Oxide Semiconductor Film at Moderate Temperature of 100°C

Gwangju Institute of Science and Technology-Seong-Ju Park
PRIST-Amutha Surabi Muthukarappan
Published 2019-10-11 by SAE International in United States
Zinc oxide semiconductor thin films are deposited on glass substrate at different RF magnetron sputtering parameters. The deposited films were characterized as a function of substrate - target distance, gas flow ratio, working pressure and RF power. X-ray diffraction, Field emission scanning electron microscopy, and hall measurement were utilized to analyze the effect of the deposition condition on the structure, surface morphology and electrical properties of ZnO thin films. The deposition conditions were optimized to give good quality films suitable for the application of flexible or invisible flat panel display. All the films were deposited at 100°C.
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Analogy of Thermal Properties of Polyamide 6 Reinforced with Glass Fiber and Glass Beads through FDM Process

Sri Krishna College of Engg and Tech.-Soundararajan Ranganathan, Hari Nishok Rangasamy Suguna Thangaraj, Aravind Kumar Vasudevan, Dharshan Karthick Shanmugan
Published 2019-10-11 by SAE International in United States
The essential target of this examination is to compare the morphological and thermal properties of two different polyamide composite blends with inventive thermal properties. The polyamide-6 (PA6) reinforced with 10, 20 and 30 wt. % glass fiber (GF) and PA6 reinforced with 10, 20 and 30 wt. % glass beads (GB) are the two different polyamide composite blends extruded in form of wire by twin screw extrusion process. The experimental study illustrates to print the specimens by means of Fusion Deposition Modeling (FDM) based Three-Dimensional (3D) printer. The responses like morphology, Thermal Conductivity (TC) and Heat Distortion Temperature (HDT) of composites were observed. From the scanning electron microscope (SEM) analysis equal distribution of higher 30wt% GF and GB in the PA6 matrix was observed. The results compare the increasing thermal properties of the 3D printed specimen like TC and HDT with the enhancement of beads content during the investigation. The GB are crystalline material which improves the thermal properties of the PA6 matrix and the GF are dimensionally stable material that can provide high modulus…
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Natural and Artificial Weathering of Automotive Leather, Leatherette and Textile

Mahindra & Mahindra, Ltd.-Elavarasan Palaniappan
Published 2019-10-11 by SAE International in United States
This paper presents the natural and artificial weathering behavior of different soft skin materials such as leather, leatherette and textiles used for automotive seat cover applications. The objective of this study was to understand the physical and aesthetical changes occurring at these flexible materials under sun UV light and heat exposure. The natural weathering study under glass exposure was carried out as per ASTM G 24 at natural weathering site location and artificial weathering as per SAE J2412 at lab. The material was observed for surface changes such as color, texture, crack and physical changes like flexibility and hardness during the exposure. The sample exposed at natural weathering data for every 15 days were recorded, and artificial weathering for every 100 hours were recorded. Light and dark color materials were tested to understand the effect of color and UV light resistance as well as various textures were studied to understand the effect of various texture and texture retention under UV.The study was also carried out at two different period in a year and the data…
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