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MOLD IN COLOR DIAMOND WHITE ASA MATERIAL FOR AUTOMOTIVE EXTERIOR APPLICATION

Mahindra & Mahindra Ltd-Karthik Govindaraj, K V Balaji, Murukesan Vimalathithan, Gandhi Samir, Ladhe Rajesh
  • Technical Paper
  • 2019-28-2562
To be published on 2019-11-21 by SAE International in United States
In this paper, mold in color diamond white ASA material has been explored for front bumper grill, fender arch extension and hinge cover applications. Other than aesthetic requirements, these parts have precise fitment requirement under sun load condition in real world usage profile. Structural durability of the design was validated by virtual engineering. Part design and material combinations with better tooling design iterations were analysed by using mold flow analysis. Complete product performances were validated for predefined key test metrics such as structural durability, thermal aging, cold impact, scratch resistance, and weathering criteria. This part met required specification. This mold in color ASA material-based parts has various benefits such as environmentally friendly manufacturing by eliminating environmental issues of coating, easily recycled, and faster part production because intended color achieved in one step during molding. Also, it lowers overall production energy footprint, less scrap with no secondary painting, and lower final part cost by eliminating secondary operations.
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Eleven Instrumented Motorcycle Crash Tests and Development of Updated Motorcycle Impact-Speed Equations

SAE International Journal of Transportation Safety

Axiom Forensic, United States-Louis Peck
Collision Engineering Associates, Inc., United States-Charles Dickerson
  • Journal Article
  • 09-07-01-0004
Published 2019-08-19 by SAE International in United States
Eleven instrumented crash tests were performed as part of the 2016 World Reconstruction Exposition (WREX2016), using seven Harley-Davidson motorcycles and three automobiles. For all tests, the automobile was stationary while the motorcycle was delivered into the vehicle, while upright with tires rolling, at varying speeds. Seven tests were performed at speeds between 30 and 46 mph while four low-speed tests were performed to establish the onset of permanent motorcycle deformation. Data from these tests, and other published testing, was analyzed using previously published equations to determine their accuracy when predicting the impact speed of Harley-Davidson motorcycles. The most accurate model was the Modified Eubanks set of equations introduced in 2009, producing errors with an average of 0.4 mph and a standard deviation (SD) of 4.8 mph. An updated set of Eubanks-style equations were developed adding data published since 2009, and further partitioning from two equations (pillars/axles and doors/fenders) to four equations (axles, pillars/bumpers, doors, and fenders). When applied to the subject tests, the newly developed set of equations produced an average error of 3.5 mph…
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Steel stands TALL

Automotive Engineering: May 2019

Lindsay Brooke
  • Magazine Article
  • 19AUTP05_01
Published 2019-05-01 by SAE International in United States

Mobility's longtime incumbent material maintains its star status for vehicle structures through constant innovation-and a collaborative development model.

In 2014, just before Ford shook the industry with the introduction of its aluminum-intensive F-150, Ducker Worldwide released a study for the aluminum industry. The report predicted that the light metal would dominate the North American light-truck segment in the next new-model development cycle. Some seven out of ten pickups in the next round were going to be AL-intensive, the study opined. A tidal wave appeared to be building.

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Interface Protection - Ground Equipment to Aircraft

AGE-3 Aircraft Ground Support Equipment Committee
  • Aerospace Standard
  • ARP1558
  • Current
Published 2019-03-28 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) discusses damage to aircraft fuselages caused by ground equipment contact at servicing and recommends methods to be incorporated or considered in ground equipment design for protection against that damage.
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2019 Dodge Challenger: Deceased Demon seeds stronger and wider muscle-car lineup

Automotive Engineering: September 2018

Paul Seredynski
  • Magazine Article
  • 18AUTP09_10
Published 2018-09-01 by SAE International in United States

The 2019 Dodge Challenger lineup sees a savvy refresh that keenly redistributes its muscle-car strengths. With the one-model-year-only Demon passing into quarter-mile lore, its bawdy 808-hp supercharged V8 has been reapplied to create a more powerful Redeye version of the supercharged Challenger SRT Hellcat.

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Eleven Instrumented Motorcycle Crash Tests and Development of Updated Motorcycle Impact-Speed Equations

Axiom Forensic-Louis Peck
Collision Engineering Associates, Inc-Charles Dickerson
Published 2018-04-03 by SAE International in United States
Eleven instrumented crash tests were performed as part of the 2016 World Reconstruction Exposition (WREX2016), using seven Harley-Davidson motorcycles and three automobiles. For all tests, the automobile was stationary while the motorcycle was delivered into the vehicle, while upright with tires rolling, at varying speeds. Seven tests were performed at speeds between 30 and 46 mph while four low-speed tests were performed to establish the onset of permanent motorcycle deformation. Data from these tests, and other published testing, was analyzed using available models to determine their accuracy when predicting the impact speed of Harley-Davidson motorcycles. The most accurate model was the Modified Eubanks set of equations introduced in 2009, producing errors with an average of 0.4 mph and a standard deviation (SD) of 4.8 mph.An updated set of Eubanks-style equations were developed adding data published since 2009, and advancing from two equations (pillars/axles and doors/fenders) to four equations (axles, pillars/bumpers, doors, and fenders). When applied to the subject tests, the newly developed set of equations produced an average error of 3.5 mph (SD = 4.3 mph). With…
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Second time a charm for Honda's unibody Ridgeline pickup?

Automotive Engineering: June 2, 2016

Bill Visnic
  • Magazine Feature Article
  • 16AUTP06_10
Published 2016-06-01 by SAE International in United States

Although its best-ever sales year was barely more than 50,000 units and many critics questioned the buying public's desire for a midsize pickup based on a unibody structure instead of the tried-and-true body-on-chassis layout, Honda remained faithful to the concept it introduced with the first-generation Ridgeline pickup, producing it for ten years from 2005-2014.

Nissan targets cabin NVH with big investment in Sentra upgrade

Automotive Engineering: May 5, 2016

Kami Buchholz
  • Magazine Feature Article
  • 16AUTP05_14
Published 2016-05-01 by SAE International in United States

Significant updates to the seventh generation Sentra make the 2016 model Nissan's quietest and most dynamic-driving compact sedan to date. The automaker invested more than three times its typical outlay for a mid-cycle refresh on Sentra, according to Chris Schwerkoske, senior product planner.

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Prediction of Aeroacoustical Interior Noise of a Car, Part-1 Prediction of Pressure Fluctuations on External Surfaces of a Car

Allied Engineering Corporation-Kunizo Onda
Mizuho Information and Research Institute-Yoshinobu Yamade
Published 2016-04-05 by SAE International in United States
A wall-resolving Large Eddy Simulation (LES) has been performed by using up to 40 billion grids with a minimum grid resolution of 0.1 mm for predicting the exterior hydrodynamic pressure fluctuations in the turbulent boundary layers of a test car with simplified geometry. At several sampling points on the car surface, which included a point on the side window, the door panel, and the front fender panel, the computed hydrodynamic pressure fluctuations were compared with those measured by microphones installed on the surface of the car in a wind tunnel, and effects of the grid resolution on the accuracy of the predicted frequency spectra were discussed. The power spectra of the pressure fluctuations computed with 5 billion grid LES agreed reasonably well with those measured in the wind tunnel up to around 2 kHz although they had some discrepancy with the measured ones in the low and middle frequencies. The Dynamic Smagorinsky Model (DSM) was adopted for the subgrid-scale turbulence model of LES while the resulting spatially-filtered Navier-Stokes equations of the incompressible fluid flow were…
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Lighting Inspection Code

Road Illumination Devices Standards Committee
  • Ground Vehicle Standard
  • J599_201511
  • Current
Published 2015-11-05 by SAE International in United States
This code is intended only for the inspection and maintenance of lighting equipment on motor vehicles that are in use.
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