The SAE MOBILUS platform will continue to be accessible and populated with high quality technical content during the coronavirus (COVID-19) pandemic. x

Your Selections

Plastics
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Committees

Events

Magazine

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

User Defined FE Based Connector Joints for Plastics

CAEfatigue Ltd-Neil Bishop, Paresh Murthy
Hella GmbH & Co. KGaA-Thomas Thesing, Odo Karger
  • Technical Paper
  • 2020-01-0186
To be published on 2020-04-14 by SAE International in United States
Spot Welds are a category of welds used extensively in automotive structures, normally for metals. The fatigue analysis of such spot welds can be evaluated using (a) the Point 2 Point (P2P) method where a beam or bar is used to connect the 2 surfaces being joined, (b) a more modern approach where the 1D element is replaced with an “equivalent” brick element, or (c) a third approach that falls somewhere between where a “spider” and circular ring of elements, is used to represent the spot weld. In all 3 cases there is an assumption that the cross section is circular. For some specialist cases such as plastic connectors, the cross section is not circular so a new user defined weld is proposed. This paper will describe the approach that is based on the concept that a user generated tensor line can be used (equivalent to the theoretical Force/Moment to stress algorithms built into the P2P approach) along with special S-N curves create for different joint shapes.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Investigations on Headlamp and Car Body Tolerances in Real Life

Audi AG-Michael Hamm, Christian Hinterwalder
  • Technical Paper
  • 2020-01-0635
To be published on 2020-04-14 by SAE International in United States
Good Lighting is cruicial for safe driving at night. Unfortunately many parameters are contributing to the final result of the individual tolerances of car body, dynamics and headlamp: The resulting aim. The paper will collect and analyse tolerance contributors from body parameters like load, tire pressure, suspension as well as aging parameters of chassis and plastic parts.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Lightweight Plastic Engine Oil Pump

SABIC-Subhransu Sekhar Mohapatra, Arunachala P, Raghavendra Janiwarad, Ashwin Kumar Ramasagaram, Fred Chang
  • Technical Paper
  • 2020-01-0233
To be published on 2020-04-14 by SAE International in United States
An oil pump is an important component of the automotive powertrain, which can potentially help improve fuel economy and reduce greenhouse gas (GHG) emissions. This can be achieved not only through a lightweight design, but also through an increase in engine efficiency by drawing the optimal amount of energy for its operation. This paper discusses the engineering design and development of a plastic automotive engine oil pump as an alternative to current metal oil pumps. Detailed component design features to ensure the working of the plastic pump under harsh chemical, temperature and vibration environment are discussed. The proposed design integrates several parts and uses unique plastic design elements to improve upon current metal design. Innovative joining methods and assembly sequencing are implemented to maintain pump efficiency and functional precision. Use of self-lubricating plastics to increase engine efficiency by reducing wear between moving parts is explored. Data and findings from extensive structural and processing simulations, as well as high temperature and long-term material tests, carried out during the design phase to ensure structural integrity and manufacturability…
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Automated 3-D Printing Machine Bed Clearing Mechanism

Kettering University-Dalton Whitten, Jason Dietrich, Matt Donar, Raghu Echempati, Colin Donar
  • Technical Paper
  • 2020-01-1301
To be published on 2020-04-14 by SAE International in United States
The work presented in this paper is based on the senior capstone class project undertaken by the student authors at Kettering University. The main aim of the project was to design an automated bed clearing mechanism for the Anet brand A8 3-D printer. The concept behind the idea was to allow everyone with this brand of printer to be able to print multiple prints without human interaction. The idea started out as a universal bed clearing mechanism, for most brands of 3-D printers. Upon researching into the many different styles and designs of printers, it was apparent that the designs differ too much from each other in order to create a universal product. The student team decided to aim for the most common style of 3-D printer, which the team also had a model to test the design. Due to the size of our team (number of members), they were split in to two sub-teams in order to explore two separate designs and develop the design and testing on both of the designs. Their designs…
new

Laser Welding ‘Clear-on-Clear’ Plastics for Medical Applications

  • Magazine Article
  • TBMG-36272
Published 2020-03-01 by Tech Briefs Media Group in United States

Through a new process, it is now possible to laser-weld two optically clear plastic parts made of a wide range of polymer materials for medical applications. This innovation combines patented Branson Simultaneous Through-Transmission Infrared® (STTIr®) laser welding technology from Emerson with precision ultrasonic spray deposition technology from Sono-Tek to open up new design possibilities for the makers of medical devices, drug-delivery systems, and in-vitro testing products.

new

Self-Cleaning, Non-Stick Coating

  • Magazine Article
  • TBMG-36200
Published 2020-03-01 by Tech Briefs Media Group in United States

Researchers have developed a self-cleaning surface that can repel all forms of dangerous bacteria. The new plastic surface — a treated form of conventional transparent wrap — can be shrink-wrapped onto door handles, railings, IV stands, and other surfaces that can be magnets for bacteria such as MRSA and C. difficile. The treated material is also ideal for food packaging, where it could stop the accidental transfer of bacteria such as E. coli, salmonella, and listeria from raw chicken, meat, and other foods.

3D Printing of Plastics with Electrical Circuits

  • Magazine Article
  • TBMG-35973
Published 2020-02-01 by Tech Briefs Media Group in United States

Engineers have embedded high-performance electrical circuits inside 3D-printed plastics, which could lead to smaller and versatile drones and better-performing small satellites, biomedical implants, and smart structures.

Thermally Conductive Polymer Films

  • Magazine Article
  • TBMG-35977
Published 2020-02-01 by Tech Briefs Media Group in United States

Polymers are commonly used for thermal insulation as they are excellent at trapping heat. Thin polymer films were developed that conduct heat — an ability normally associated with metals. The films, which are thinner than plastic wrap, conduct heat better than many metals including steel and ceramic.

Technique Creates Transparent Polythene Films as Strong as Aluminum

  • Magazine Article
  • TBMG-35985
Published 2020-02-01 by Tech Briefs Media Group in United States

Scientists replacing heavy and often brittle glasses with a transparent plastic previously used conventional transparent plastics like polycarbonate (PC) and poly(methylmethacrylate)(PMMA), both of which possess relatively unsatisfactory mechanical performance compared to an engineering material like aluminum. Current methods of creating high-strength plastic films such as hot-drawing of high-density polyethylene (HDPE) can lead to materials that can compete or even outperform traditional engineering materials like metals.

Automated Production of Advanced Materials

  • Magazine Article
  • TBMG-36012
Published 2020-02-01 by Tech Briefs Media Group in United States

Engineers have developed an automated way to produce polymers, making it much easier to create advanced materials aimed at improving human health. The innovation is a critical step in pushing the limits for researchers who want to explore large libraries of polymers, including plastics and fibers.