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Mechanical Property Evaluation of Paper Honeycomb reinforced Plastics

Hyundai Motor India Engineering PVT LTD-Vignesh balaji S G, Pradeep S, Aakash S K
  • Technical Paper
  • 2019-28-2538
To be published on 2019-11-21 by SAE International in United States
Mechanical Property Evaluation of Paper Honeycomb Reinforced Plastics Vignesh Balaji S G, Pradeep Hyundai Motor India Engineering Pvt. Ltd, Chennai. India Key Words: Paper Honeycomb, Epoxy Composites, Mechanical Properties, Tensile, Impact & Flexural Test Research and/or Engineering Questions/Objective : Composite Materials are widely being used in many engineering applications because of their desirable properties & Cost, Weight Effectiveness. They are widely being used as their Strength-Weight Ratio is Higher than any Other Material. Paper Honeycomb Material is basically a paper made of honeycomb shapes enforced between layers of Glass Mat. This paper deals with the evaluation of Tensile Strength, Flexural (Three-Point Bending) Strength & Flexural Modulus, Impact Strength of Paper Honeycomb Reinforced Epoxy Composites. The Scope of this Material defines the quality of Paper Honeycomb Reinforced Composites which can be used for Automotive Trim Parts. Methodology: Before beginning the tests, the specimens should be prepared and the steps for the preparation of paper honeycomb reinforced epoxy composites are shown below: 1. Mould Preparation 2. Mixing of Epoxy and Hardener with a ratio of 10:1 3.…
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Design and Analysis of Natural Fibre Reinforced Epoxy Composites for Automobile Hood

SRM Institute Of Science And Technology-Akhil Kumar Guduru, V N B Prasad Sodisetty, Vidya Prudhvi Sai Katari
  • Technical Paper
  • 2019-28-0086
To be published on 2019-10-11 by SAE International in United States
The need for eco-friendly materials is recently increasing in the automobile and aerospace sectors. Material selection for automobile components is influenced by various factors such as cost, weight and strength. Natural fibers offers various advantages over conventional materials such as environmental friendly, easily available, recyclable and higher specific strength. Among the natural fibers Sisal and Kenaf fibers are selected for present study due to their good mechanical properties and availability. Kenaf fibers have great potential to be used as construction and automotive materials due to their long fibers which are derived from the bast. Sisal fibers do not absorb moisture and possess good impact, sound absorbing properties and high fire resistance properties. Epoxy LY556 is selected as matrix material to bind the combination of these two natural fibers due to its high temperature resistance and adherence to reinforcements. Alkaline treatment was carried out to remove the moisture from the natural fibers. Fabrication of epoxy/Kenaf fibre/Sisal Fibre composite materials of different stacking sequence was carried out by Vacuum Assisted Resin Transfer Molding (VARTM) method. These composites…
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Design Analysis and 3D Printing of Non-Pneumatic Tyre

VNR VJIET-Prashanth Kannan, Amjad Shaik, Yogesh Kumar, Naga Sumanth Bareddy
  • Technical Paper
  • 2019-28-0059
To be published on 2019-10-11 by SAE International in United States
The major concern when implementing maneuvers are acceleration, braking and steering for the safety control which ultimately depends on the road and tyre surface friction. To withstand the vertical loads and maintain good traction with contact surface pneumatic tyres with high volume of pressurized air are required. To improve the comfort, handling and grip with low unsprung mass, non-pneumatic tyres are needed which are not reinforced with air pressure. The decreased effect of rolling resistance, added cushioning effect and better cellular shear band design increased the performance level than pneumatic tyres. Here, air is replaced by poly-composite spokes that eliminates the possibility of tyre going flat. This paper mainly discusses the environmental impact and stability issues of conventional pneumatic tyres and also focuses on the various possible design and components of an airless tyre. This paper also presents the modelling and analysis of non-pneumatic tyre followed by 3D printed sealed model using ABS (Acrylonitrile Butadiene Styrene) and TPU (Thermoplastic Polyurethane). Honeycomb structured cellular shear band made of polyurethane are tested with different shear band angles…
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Experimental Investigation on Mechanical Properties and Vibration Damping Frequency Factor of Kenaf Fiber Reinforced Epoxy Composite

Hindustan Institute of Technology and Science-Sathish Kumar Rajamanickam, Sivakumar Sattanathan, Deenadayalan Ganapathy, Joshuva Arockia Dhanraj
Sri Krishna College of Engineering and Technology-Vishnuvardhan Ravichandran
  • Technical Paper
  • 2019-28-0167
To be published on 2019-10-11 by SAE International in United States
Kenaf Fiber regarded as industrial crop for different applications. It is one of the most important plants cultivated for natural fibers globally. Natural fibers such as kenaf fibers are getting attention of researchers and industries to utilize it in different composites due to its biodegradable nature. In this present investigation mechanical properties, vibration damping frequency factor and thermogravimetric analysis of kenaf fiber reinforced epoxy composite (KFREC) have been evaluated and reported. The tests were conducted with different weight categories of kenaf fiber such as 20%, 25%, 30% and 35%. The effects of fiber content on tensile, flexural, impact strengths, hardness and thermal decomposition properties of the composite were determined. The failure mechanism and damage features of the KFREC were categorized using Scanning Electron Microscope (SEM). The results indicate that the increase in the fiber content decreases the damping vibration factor (ζ) correspondingly. The lowest value of the damping vibration factor was recorded as 0.033 for 35% weight content of Kenaf fiber in the composite. The maximum value of hardness, tensile, flexural, and impact strengths were…
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Automotive Engineering: September 2019

  • Magazine Issue
  • 19AUTP09
Published 2019-08-29 by SAE International in United States
Engineering the 2020 Chevrolet Corvette The eighth-gen (C8) Corvette is a creative mix of novel and traditional technical solutions - unleashed at a shockingly low base price.Stuck on structural adhesives As the need for lighter materials and enhanced body performance intensifies, structural adhesives flourish as a materials-joining solution.Rethinking ADAS materials New specialized thermoplastics offer greater design freedom to improve sensor performance and packaging, at reduced cost.Inside VW's expanding Silicon Valley lab The pioneering California innovation hub enters its third decade on a new wave of innovation.Editorial There is no substitute for 'Automotive Grade'Standards News SAE embraces micromobility and its macro challengesSupplier Eye The value - and risks - of Technology TestbedsWhat We're DrivingLatest mass-reducing innovations honored by AltairGM underway with plan to build U.S. electric-vehicle charging infrastructureFord 'cranks' it up with another big V8 for MustangZF shifts EV transmission efficiency up a gear2020 Hyundai Palisade: New chassis, Atkinson V6Ford returns to OHVs for new commercial-truck V8Q&A American Battery Solutions Inc.'s Subash Dhar
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Thermal Conductivities of Some Polymers and Composites

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_09
Published 2019-08-01 by SAE International in United States

Assessing the performance of polymers used in structural armor and filament winding applications.

Thermoset polymers are good electrical insulators that are used in applications ranging from electronics to composite armor. They are rather poor thermal conductors, however.

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Multidisciplinary Design Analysis and Optimization of Aerospace Composites

Charles Lu
  • Progress In Technology (PT)
  • PT-201
Published 2019-04-30 by SAE International in United States
Multidisciplinary Design and Optimization of Aerospace Composite Materials is a collection of ten SAE technical papers focusing on the design analysis of aerospace composite structures from the perspective of various disciplines. The book concentrates on the following aspects: • Analytical methods for weight design of aircraft structures, including a parametric geometry model capable of generating dedicated models for both aerodynamic and structural solvers. • Methodologies for evaluating the structural performance of carbon/epoxy composite panels. • An aerodynamic design of flexible wings made of composite structures. • Thermal design and analysis of composite enclosures. • Methodologies for analyzing the acoustic performance of composite structures, including the design optimization method to evaluate the acoustic performance in terms of transmission loss (TL) of various composite panels. • The lightening effect on composites, presenting a theoretical method to compute the electrical current propagating through composite structures due to lightning strikes. • The issue of fire resistance as most polymer resins are flammable once the respective ignition temperatures are reached. • A probabilistic-based reliability analysis of the composite structures. The…
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Polymers Bundle

  • Professional Development
  • PD281945
Published 2019-04-25

Polymers are thermoplastic, meaning that once the polymer is formed, it can be heated and reformed repeatedly. Both synthetic and natural polymers play an essential role because of their broad range of properties. Polymers are relatively low-cost and allow for a wide range of characteristics and colors. Polymers can be both thermal and electrical insulators and very resistant to chemicals. The following five on-demand courses are included in the  Polymers bundle.  Each course is approximately one-hour in duration. See Topics/Outline for additional details.

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Composite Lightweight Automotive Suspension System (CLASS)

Ford Motor Co.-Alan James Banks
Published 2019-04-02 by SAE International in United States
The Composite Lightweight Automotive Suspension System is a composite rear suspension knuckle/tieblade consisting of UD prepreg (epoxy resin), SMC (vinylester resin) carbon fibre and a steel insert to reduce the weight of the component by 35% and reduce Co2. The compression moulding manufacturing process and CAE optimisation are unique and ground-breaking for this product and are designed to allow high volume manufacture of approx. 30,000 vehicles per year. The manufacturing techniques employed allow for multi-material construction within a five minute cycle time to make the process viable for volume manufacture. The complexities of the design lie in the areas of manufacturing, CAE prediction and highly specialised design methods. It is a well-known fact that the performance of a composite part is primarily determined by the way it is manufactured. The design team were able to use their extensive knowledge of material behaviour and state of the art manufacturing cells to enable a component that meets the required functional requirements. The CAE optimisation techniques developed during the project made a significant contribution to the project by…
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Understanding Resilience to Contamination in the Joint Interface for a Resistive Welded Joint in Fiber Reinforced Thermoplastics

Clemson University - ICAR-Veera Aditya Yerra, Srikanth Pilla
Published 2019-04-02 by SAE International in United States
The continuous evolution to improve both the efficiency and lower the emissions of passenger vehicles now means that the need for light weighting is indisputable. New material systems such as fiber reinforced thermoplastic composites offer just such a very high lightweighting potential.Although most of these parts are currently joined using adhesives, resistive welding provides a promising alternative. Indeed, the faster cycle times, recyclability, design flexibility and resilience to contamination indicate the superiority of resistive welding over adhesive bonding. Although resilience to contamination is widely accepted, it is yet to be validated as very little scientific data is available concerning these characteristics. To ensure the scalability of these joints in automotive applications, they should exhibit tolerances to specific contaminations that are present in the body shop. While it is possible to minimize contaminations in the body shop, it often comes with requiring additional cleaning steps and maintaining large, clean rooms which are very expensive.In this paper, the effect of contaminations, particularly water and oil residues on joint strength were studied to determine their effect upon both…
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