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Standard

Softening Point of Interior Trim Adhesives

2020-11-19
WIP
J1700
This SAE Recommended Practice shall be used to determine the temperature at which an adhesive softens to the point at which it no longer can support a given load.
Standard

Overlap Shear Test for Automotive Type Sealant for Stationary Glass Bonding

2020-11-19
WIP
J1529
This SAE Recommended Practice defines a procedure for the construction and testing of glass to metal lap shears for determining shear strength of sealant adhesives for automotive stationary glass bonding. This procedure can also be used for fiber reinforced plastic (FRP) when used in place of metal.
Standard

Aerospace Fiber Optic Cable Assembly Drawing Specification

2020-11-19
WIP
AS6021A
This SAE Aerospace Standard (AS) defines the items that shall be considered when creating a fiber optic cable assembly specification and source control drawing intended for installation on aerospace platforms.
Standard

NEW FINISH DEVELOPMENT DOCUMENT

2020-11-19
CURRENT
USCAR32-1
This standard lists variables that shall be investigated and reported as an initial investigation into new or revised surface finishes intended for use on fasteners. This standard provides instruction for producing a final report that will be used to determine if further investigation of a surface finish is justified. Further investigation may include tests and evaluations specific to an individual OEM prior to introduction/approval of the surface finish. The final report shall include the results, observations, and conclusions for all of the variables. The final report may be made up of several individual reports covering each variable. In all cases the laboratory performing the test, the test date and the report approver shall be included in the final report.
Journal Article

Mechanical Response of Hybrid Laminated Polymer Nanocomposite Structures: A Multilevel Numerical Analysis

2020-10-19
Abstract The prediction of mechanical elastic response of laminated hybrid polymer composites with basic carbon nanostructure, that is carbon nanotubes and graphene, inclusions has gained importance in many advanced industries like aerospace and automotive. For this purpose, in the current work, a hierarchical, four-stage, multilevel framework is established, starting from the nanoscale, up to the laminated hybrid composites. The proposed methodology starts with the evaluation of the mechanical properties of carbon nanostructure inclusions, at the nanoscale, using advanced 3D spring-based finite element models. The nanoinclusions are considered to be embedded randomly in the matrix material, and the Halpin-Tsai model is used in order to compute the average properties of the hybrid matrix at the lamina micromechanics level.
Video

Impact of Acrylic Fiber on the Performance of Newly Developed Friction Materials for Vehicles with Regenerative Braking

2020-10-02
Regenerative braking in conjunction with friction braking represents one of the most common braking strategies employed in electric and hybrid vehicles. The considerably different role of the friction brake in these ?blended scenarios?, when compared with braking solely by friction brakes, creates potential for development of new advanced and sustainable brake materials and brake designs. Fiber reinforcements used in friction brake material play an important role in improving strength, stability, and frictional properties [1, 2, 3]. This study concentrated on the development of a new generation of lightweight, ?quiet? and environmentally sustainable brake pad materials to be used with coated cast iron rotors in vehicles with regenerative braking.
Video

Performance Evaluation of New Series of Kevlar Fiber Based Nano Composite Friction Material Tested on Coated Rotors

2020-10-02
Regenerative braking is an important system of an electric/hybrid vehicle as it enables to recover the considerable part of its kinetic energy. Since the braking torque demand could often be higher than the torque provided by the electric motor, a ??blended?? approach of friction and regenerative braking is used [1]. This provides an opportunity for development of advanced new designs of regenerative brakes and a new series of advanced lightweight, low wear, high strength, corrosion mitigating and sustainable friction materials. This study focuses on the performance of a newly patented polyimide matrix composites reinforced with Kevlar fabric and further modified with carbon nanoadditives. These alternative friction materials are very light and are free of not only asbestos and copper, but also of other environmentally challenging constituents potentially used in friction materials.
Standard

Aerospace Size Standard for O-Rings

2020-09-29
CURRENT
AS568F
This SAE Aerospace Standard (AS) specifies the inside diameters, cross-sections, tolerances, and size identification codes (dash numbers) for O-rings used in sealing applications and for straight thread tube fitting boss gaskets. The dimensions and tolerances specified in this standard are suitable for any elastomeric material provided that suitable tooling is available.
Technical Paper

Noise Absorption Behavior of Aluminum Honeycomb Composite

2020-09-25
2020-28-0453
Natural fibers are one of the major ways to improve environmental pollution. In this study experimental investigation and simulation of honeycomb filled with cotton fabric, wood dust and polyurethane were carried out. This study determines the potential use of cotton fabric, wood dust as good sound absorbers. Automotive industries are looking forward to materials that have good acoustic properties, lightweight, strong and economical. This study provides a better understanding of sound-absorbing material with other mechanical properties. With simulation and experimental results, validation of works provides a wider industrial application for the interior of automotive industries including marine, aviation, railway industry and many more.
Technical Paper

Finite Element Analysis of Glass Fibre Reinforced-Fibre Metal Laminate Composite with Different Stacking Arrangements

2020-09-25
2020-28-0382
FMLs (fibre metal laminates) are a kind of hybrid composite material consisting of composite material layers alternating to metal sheets (Aluminium) with high structural characteristics. The aim of the present work is to investigate the bending behavior of Glass fibre Reinforced (GLARE) - Fibre Metal Laminate (FML) under the various stacking arrangement using finite element (FE) analysis. In this view, the FE model of GLARE-FML is developed in ANSYS®15.0 software using shell181 element. Initially, the developed FE model is validated with laminated composite materials and results are shown good agreement with literature results. Then, the present FE model is used to analysis the central deflection, maximum normal stress along x & y direction and shear stress for different stacking arrangement (GLARE type 1 to 6) under uniformly distributed load.
Technical Paper

Mechanical Behavior of Glass Fiber Reinforced with Human Hair and Jute

2020-09-25
2020-28-0409
Reinforced composites are the most widely used type of polymer composites. As in the presence of these reinforcements, the polymer may yield relatively better mechanical properties. Recently, reinforced composites are prepared as a combination of natural and synthetic fibers. Natural fibers are obtained in abundance and also possess properties like unique chemical composition, low density, slow degradation rate, high durability, etc. which makes them suitable to use as a reinforcement material. Also, one of the main reasons for wide research and use is the cost-effectiveness of these sandwiched composite laminates. This paper deals with the comparison of conventional GFRP with sandwich stackings of GFRP with discarded Human Hair and Jute by using Epoxy Resin 6022 and Hardener 4111.
Technical Paper

Recyclability of Particulate Natural Fibre Composite Waste on Sisal/Epoxy Composite-Mechanical and Drilling Characterization

2020-09-25
2020-28-0398
In industries, the usage of natural fibre composites (NFC) becomes one of the inevitable materials in the engineering field. The applications are owing to its characteristics like high strength to weight ratio, recyclability less density and inexpensive. In recent days the automotive parts like door trim panels, wheel arch, rear hatch, roof liner and bonnet insulation were replaced using NFC. Present-day huge usage of NFC people is working on the recyclability of composites. The present research aimed to recycle the NFC waste as reinforcement in the sisal/epoxy composite. The effect of composite waste reinforcement at various weight percentages (0, 5, 10 and 15%) were studied. The sisal/epoxy composite subjected to mechanical characterisations and drilling performance were studied by varying the process parameters such as feed and spindle speed using design of experiment (DOE).
Technical Paper

Enhancing the Tribological Properties PETG and CFPETG Composites Fabricated by FDM via Various Infill Density and Annealing

2020-09-25
2020-28-0429
One of the prominent representatives of heat-resistant polymers was the class of Polyethylene Terephthalate Glycol (PETG) with high-strength, but still lightweight. The carbon fiber with PETG (CFPETG) composites also gives even more resistance to heat and chemical, creating it a demandable choice of application in automotive and other industrial components. This paper aims to study the most significant process parameter of FDM technique for different infill density of 25%, 50%, 75%, and 100% at various sliding load condition and sliding distance on wear and friction characteristics of PETG and CFPETG under annealed condition was investigated via dry sliding tribometer apparatus. The trials were done by applying the load of 10N, 20N, 30N, 40N, with a sliding distance of 1000m, 2000m for the time period of 10 min at room temperature and responses such as wear rate and coefficient of friction were recorded for further analysis.
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