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Employing natural plant based fiber in interior automotive parts for cost & weight benefit

Vivekanandhan-Vivekanandhan Venkatesan Balaguru
  • Technical Paper
  • 2019-28-2559
To be published on 2019-11-21 by SAE International in United States
The Automotive industry is in ever more need for a lesser weight car due to progressively stringent emission norms and the demand of customer to have better mileage. It can be a gargantuan challenge for automotive manufacturers to search for lesser weight material to meet both customers as well as regulatory norms. But in some cases such lower weight material can increase the cost and adding a expensive material which increases overall cost to a price sensitive market like India is not favorable. One such solution is using the indigenous plant fiber (Jute) in combination with propylene (PP) to make Interior plastics components. Jute a vegetable fiber also referred to as "the golden fiber" has high tensile strength, low extensibility and is well established in fabric, packing, agriculture, construction industries. The biodegradable Jute lesser weight & abundance (India is the leading manufacturer of the Jute) can be utilized in making automobile trim parts in India. Through this paper we will have insight of the natural fiber based plastic components the benefits (lesser weight, Less GSM…
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Squeak Behavior of Plastic Interfaces

Auto & Truck Services-Lokesh Pancholi
  • Technical Paper
  • 2019-28-0083
To be published on 2019-10-11 by SAE International in United States
Automotive is getting advanced and increasingly comfortable with new technologies and demand from customers. Car cabins have become much quieter as compared yesteryears. Where the outside noise has gone down significantly, secondary and small noises like squeak and rattle have become more prominent. Squeak though a transient and short lived, is an unexpected noise and often considered as an irritant. There is an increasing need felt to eliminate squeak completely from the interiors of the vehicle where choice materials play dominant role. This article briefs about the work done on evaluating different plastic interfaces for squeak behavior using Stick-Slip method. Some plastic surfaces were even tested with other interfaces like leather and vinyl coated fabrics. Choice of plastic material and interfaces to be tested were shortlisted after studying many different vehicles and benchmarking. Difference in squeak was also studied with respect to external conditions like temperature, velocity of interfaces, normal force, humidity and roughness. The result of any test is measured in the form of Risk Priority Number (RPN) where higher the RPN, higher is…
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Development and Investigation of Jute/Linen Fibre Reinforced Polymer Composite

BSA Crescent Institute of Science & Technology-Arvinda Pandian, Siddhi Jailani
  • Technical Paper
  • 2019-28-0171
To be published on 2019-10-11 by SAE International in United States
In recent automotive era, natural fibre reinforced with thermoset polymer composites have been incorporated by automotive industries especially for interiors, car body panels, dashboards, headliners etc. Natural fibres offer many affirmative qualities such as less weight and cost, especially in reduction of carbon di-oxide which is a major threat to the planet from the automotive sectors. The current work deals with the study of the potential usage of mineral powder (industrial by-product) in polymer. In this paper, hybrid composites with natural fabrics reinforcements and mineral powder as filler to matrix material are developed. The mineral powder used as filler is silica fumes which is a by-product of industries. The hand lay-up methodology is employed to fabricate the composite. The composites with and without mineral filler material are developed. The mechanical properties of the composites are assessed. The mechanical properties of composites with and without mineral filler are compared and their result shows that with addition of filler material, the mechanical properties of the composites are affected. Results disclose that loading of silica fumes increases the…
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Development of Multi-Material Overhead Stowage Systems for Commercial Aircrafts by Using New Design and Production Methods

3D Systems GmbH-Gunnar Fick
Composite Technology Center / CTC GmbH-Marc Fette
Published 2019-09-16 by SAE International in United States
Innovative, lightweight and cost-efficient aircraft components require the use of modern lightweight materials and efficient production technologies. A promising technology is the combination of chopped fiber Sheet Molding Compounds (SMC) and pre-impregnated, continuous fiber fabrics processed by single-stage compression molding. The so-called Hybrid SMC Technology obtains cost-efficiency as well as time-saving production of loaded and functional aircraft components. However, reliable design principles for components and computing methods for predicting the material behavior have to be developed for a use in aviation industry. Hence, this paper deals with the development of materials, fabrics, manufacturing processes and computing methods related to the Hybrid SMC Technology. Those developments are demonstrated and validated by the implementation of a lightweight multi-material overhead stowage compartment (OHSC) using new design approaches as well as assembly principles.
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Latest mass-reducing innovations honored by Altair

Automotive Engineering: September 2019

Ryan Gehm
  • Magazine Article
  • 19AUTP09_09
Published 2019-09-01 by SAE International in United States

The fourth-generation Jeep Wrangler, which eliminated 92 kg (203 lb) compared to the previous-generation vehicle, and Ferrari's Portofino, which is 80 kg (176 lb) lighter yet 35% stiffer than the outgoing California T it replaces, were the Full Vehicle category winners of the 7th annual Altair Enlighten Awards, the widely-anticipated lightweighting competition sponsored by Altair and presented at the Center for Automotive Research (CAR) 2019 Management Briefing Seminars (MBS) conference in Traverse City, Mich.

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Textile Cools or Insulates Automatically

  • Magazine Article
  • TBMG-34915
Published 2019-08-01 by Tech Briefs Media Group in United States

Researchers have created a fabric that automatically regulates the amount of heat that passes through, depending on conditions; for example, when conditions are warm and moist — such as those of a sweating body on a summer day — the fabric allows infrared radiation (radiant heat) to pass through. When conditions become cooler and drier, the fabric reduces the heat that escapes. Infrared radiation is a primary way the body releases heat and is the focus of this new technology.

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Steel, Corrosion and Heat-Resistant, Seamless Tubing 25Cr - 20Ni (SAE 30310S) Solution Heat Treated

AMS F Corrosion Heat Resistant Alloys Committee
  • Aerospace Material Specification
  • AMS5572H
  • Current
Published 2019-07-31 by SAE International in United States
This specification covers a corrosion and heat-resistant steel in the form of seamless tubing.
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Isolation and Corrosion Protection of Dissimilar Materials, Carbon Composite Structure Repair

AMS G9 Aerospace Sealing Committee
  • Aerospace Standard
  • ARP4118B
  • Current
Published 2019-07-09 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) provides methods and guidelines for isolating dissimilar repair patch materials from carbon fiber reinforced plastic (herein also referred to as carbon composite) structure during a repair operation.
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Test Method for Measuring Wet Color Transfer Characteristics

Textile and Flexible Plastics Committee
  • Ground Vehicle Standard
  • J1326_201906
  • Current
Published 2019-06-25 by SAE International in United States
This procedure describes a method of measuring the resistance to wet color transfer of materials such as textiles, leather, and composites.
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A Sensor that Fits Like a Glove

  • Magazine Article
  • TBMG-34589
Published 2019-06-01 by Tech Briefs Media Group in United States

We recently had a discussion with Sri Peruvemba, VP of Strategy at BeBop Sensors (Berkeley, CA), about the technology and applications for their two-dimensional fabric sensor material. I started by asking Sri about the unusual name for the company.