Browse Topic: Coatings, colorants, and finishes

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Application of Coated Metallic Bipolar Plate for Proton Exchange Membrane (PEM) Fuel Cell2024-26-017201/16/2024
In the current era of green energy adoption for reaching the zero-carbon target, the mobility sector is extensively working together to use hydrogen as a major source of energy, especially in vehicles with long range requirements. For this, Proton Exchange Membrane Fuel Cells (PEMFC) are employed to convert the chemical energy of hydrogen back into electricity. Acceptability of PEMFC in the automotive field mostly depends on system efficiency, durability & cost of the FC stack. In PEMFC, the bipolar plate (BPP) is a critical component of the system, which realizes the transport of gases to the electrodes, evacuates reactant product water and ensures electrical current collection. In some applications, graphite is used as material for bipolar plates due to good chemical stability and corrosion resistance, whereas it is also a rather brittle material with some manufacturing challenges. In mobile applications, metallic bipolar plates are widely used, as they allow for a significantly
Sheikh, Shabbir, Reum PhD, Mathias, Wegener PhD, Moritz, Bagcivan PhD, Nazlim, Weber, Joachim, Schulz PhD, Edgar, Stumpf PhD, Jan Martin
Technical Paper
Achieving Desired Level of Wettability for Unlikely MaterialsTBMG-4691111/01/2022
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Magazine Article
Achieving Desired Level of Wettability for Unlikely MaterialsTBMG-46911-TEST-REC11/01/2022
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Magazine Article
Antimicrobial Coating for Orthopedic Implants Prevents Dangerous InfectionsTBMG-4691711/01/2022
Magazine Article
Optical Black Coatings On Carbon Fiber Reinforced Composite Sandwich Structure With Aluminum Honeycomb Core For Satellites Applications.2022-26-114105/26/2022
The composite sandwich structure has been in use in space applications as a result of its high strength to weight ratio coupled with excellent compressibility strength. In particular, there has been tremendous demand for honeycomb sandwich structures for satellite application in recent years. Currently, a major problem needs to be addressed concerning reflections from satellite structures which leads to capturing in-accurate data of celestial bodies by ground-based astronomy. In the light of the above, this paper focuses on the development of novel optical black coatings on Carbon fiber reinforced composite sandwich structures with aluminum honeycomb core. A thin layer of Multi-Walled Carbon Nanotubes black coatings was developed on the surfaces of Carbon fiber reinforced composite laminate of the sandwich structure using Chemical Vapour Deposition technique, to provide low scattering and low reflective surface. Three-point bending test are performed for evaluating the Youngs modulus
CS PhD, Ramesh, J, Sudharshan, Chaurasia, P Harsh
Technical Paper
Novel study on Elastic recuperation of Titanium (grade 5) alloy during machining2022-26-116705/26/2022
Machining is the process of removing material from a workpiece, in the form of chips, to obtain the final part in its desired shape and size. Various aerospace materials such as Aluminum, Steel, Titanium etc. can be mainly shaped through machining process. Titanium alloys also find larger adoption in areas like Bio-medical and Automotive mainly because of their inherent high specific strength and consistent corrosion resistance. Machining Ti-6Al-4V (grade 5) has been difficult due to a number of its characteristics like poor conductivity of heat, strong and undesirable chemical reactivity with cutting tool materials at operating/ cutting temperature, it’s work hardening characteristics and very low modulus of elasticity. Due to low modulus of elasticity, the elastic recovery or recuperation of thin-walled Titanium grade 5 parts that occur after machining is an important topic/issue to be addressed since it has greater effect on the work piece surface quality, cutting tool wear and the
Acharya, Nishanth R.
Technical Paper
testprint7SAE-PP-0100104/27/2022
testprint7
Mutagaana, Festo
Pre-Print Article
testprint6SAE-PP-0100004/27/2022
testprint6
Mutagaana, Festo
Pre-Print Article
IMPROVING AESTHETICS AND DURABILITY OF INTERIOR TRIMS WITH PU SOFT COATING2022-01-040203/29/2022
Low density plastic substrate significantly contributes to the vehicle weight reduction. It's a low-cost substrate because of mass production of moulded parts. So being a low-cost substrate and its low density properties, the use of plastic parts in automotive body construction, has been increased. But most of the plastic materials are not stable and durable in its color and gloss. Specific additives may help it to withstand, owning to the fact that whole bulk of plastic need not be loaded with these additives. Most plastic parts consist of thermoplastic polymers, have less resistance to chemicals, and solvents. This problem can be resolved using cross-linked and resistant coatings. With the importance of plastics, in automotive interior applications, study of coatings are required which improves performance, aesthetic effects, durability, and chemical resistance. PU based coating has much importance because of its versatile and unique properties. This paper is about Polyurethane based
Palliwar, Kanchan Raju
Technical Paper
Modeling the Effects of Drop Impingement Frequency on Heated Walls at Engine Conditions2022-01-059203/29/2022
Understanding the fundamental details of drop/wall interactions is important to improving engine performance. Most of the drop-wall interactions studies are based on the impact of a single drop on the wall. To accurately mimic and model the real engine conditions, it is necessary to characterize spray/wall interactions with different impingement frequencies at a wide range of wall temperatures. In this study, a numerical method, based on Smoothed Particle Hydrodynamics (SPH), is used to simulate consecutive droplet impacts on a heated wall both below and above Leidenfrost temperature. Impact regimes are identified for various impact conditions by analyzing the time evolution of the post-impingement process of n-heptane drops at different impingement frequencies and wall surface temperatures. At low temperature, crown propagation and merging are dominant at low K-number whereas at high K-number there is significant splashing with the traces of liquid film on the surface. Around and
Subedi, Kshitiz Kumar, Kong, Song-Charng
Technical Paper
Influences of Martensite Morphology and Precipitation on Bendability in Press-Hardened Steels2022-01-027203/29/2022
Performance evaluation of martensitic press-hardened steels by VDA 238-100 three-point bend testing has become commonplace. Significant influences on bending performance exist from both surface considerations related to both decarburization and substrate-coating interaction and base martensitic steel considerations such as structural heterogeneity, i.e., banding, prior austenite grain size, titanium nitride (TiN) dispersion, mobile hydrogen, and the extent of martensite tempering as result auto-tempering upon quenching or paint baking during vehicle manufacturing. Deconvolution of such effects is challenging in practice, but it is increasingly accepted that surface considerations play an outsized role in bending performance. For specified surface conditions, however, the base steel microstructure can greatly influence bending performance and associated crash ductility to meet safety and mass-efficiency targets. This study reports and elucidates the positive effect of prior austenite
Enloe, Charles M., Mohrbacher, Hardy
Technical Paper
Wear and Friction of PTFE and PEEK Coated Cast Iron Piston Ring 2022-01-038003/29/2022
In engine 30% of the total energy is lost due to the friction between piston ring and cylinder liner due to their constant rubbing motion. A piston that reciprocates at high speeds has piston rings that constantly scrape against the wall leading to high frictional losses within the engine. The engine has to work against this resistance to provide the required power, and hence it will consume more fuel. For this reason, material used for these components is more crucial. Reduction of surface friction between moving parts in order to increase overall efficiency can be achieved by suitable coating. The most commonly used piston rings are coated with chromium layers that are electroplated which is being replaced by chrome plating. Low coefficient of friction (COF) and high wear resistance can be achieved by self-lubricating coating of PTFE and PEEK polymer-based composite coatings. Experimental results showed that the PEEK and PTFE coating performed better in terms of friction and wear
Rajendran, R.
Technical Paper
Investigation of Al2O3-Ni coated cast iron brake rotors under modified brake dynamometer test standards2022-01-030903/29/2022
Due to the reduced or less-frequent usages of the friction brakes and the lower brake rotor temperature on electrical vehicles (EV), corrosion would much likely occur on brake rotors. Using hard braking to clean the corroded rotor surfaces often leads to extra rotor surface wear. Improvement in corrosion and wear resistance is an important technological topic to brake rotors for EVs. Many original equipment manufacturers (OEM) and their suppliers are exploring surface treatments including laser cladding and thermal spray processes on cast iron rotors to combat the corrosion issues. However, mentioned surface coating processes increase the cost of brake rotors and there is a need to search for cost-effective coating processes. In this research, a new Al2O3-Ni composite coating was proposed for preparation of a commercial cast iron brake rotor using both plasma electrolytic aluminating (PEA) and electroless nickel plating (ENP) processes. The added nickel was to fit in the intrinsic
Cai, Ran, Sun, Jiayi, Zhang, Jingzeng, Tjong, Jimi, Foots, Sean, Lavelle, Mark, Nie, Xueyuan
Technical Paper
Electrical insulation property of an alumina coating on a bearing steel SAE 521002022-01-087903/29/2022
In recent years, bearing electrical failures have been a significant concern in electric cars, restricting electric engine life. The most frequent material used to make bearings is 52100 alloy steel. This work aims to introduce a coating approach for preventing electrical erosion on 52100 alloy steel samples. This paper summarizes the causes of shaft voltage and bearing currents. Meanwhile, the paper discusses standard electrical bearing failure mechanisms, such as morphological damages and lubrication failures. Alumina coatings are suitable for insulating the 52100 alloy steel samples because alumina coatings provide excellent insulation, hardness, and corrosion resistance, among other characteristics. Based on the research, this article briefly discusses employing plasma electrolytic aluminating to coat 52100 alloy steel samples, an eco-friendly and high-efficiency coating process. Coating experiments were conducted over different coating periods to determine the most appropriate
Deng, Dewei, Nie, Xueyuan
Technical Paper
Magnesium Sheet Component Development and Demonstration Project2022-01-028603/29/2022
Most of the applications of magnesium in lightweighting of commercial cars and trucks are die castings rather than sheet metal, and automotive applications of magnesium sheet have typically been experimental or low-volume serial production. The overarching objective of project was to develop new low-cost magnesium alloys, and demonstrate warm-stamping of magnesium sheet inner and outer door panels from a 2013 MY Ford Fusion at a fully accounted integrated component cost increase over conventional steel stamped components of no more than $2.50/lb. saved. The project demonstrated the computational design of new Mg alloys from atomistic levels, cast new experimental alloy ingots and explored thermo-mechanical rolling processes to produce thin Mg sheet of desired texture. A new commercial Mg alloy sheet material was sourced and pretreated with protective coil coatings, and its properties fully characterized. The Mg sheet was warm-formed using novel lubricants into intermediate size
Gerken, Randy T., Ghaffari, Bita, Sachdev, Anil K., Mehta, Manish, Carter, Jon T.
Technical Paper
Effect of Decoration on Windshield Impact Resistance and Novel Decoration Solution Compatible with Chemical Strengthening2022-01-030403/29/2022
Ball bearing impact tests were performed to evaluate impact resistance of laminates with different decoration configurations. Test results showed that laminates made with enamel decorative frit only on Surface 4, significantly outperformed laminates that had enamel on Surface 2. Furthermore, it was found that hybrid laminates, consisting of a standard annealed outer-ply and a thin, chemically strengthened inner-ply with a specially formulated decorative frit which is compatible with the ion-exchange chemical strengthening process, resulted in impact resistance levels that were three times greater than conventional laminates. Details follow.
Cleary, Thomas, Huten, Timothy, Lehuede, Philippe, Joubaud, Laurent, Friske, Mark
Technical Paper
Silver surface treatment applicable to bolts for motorcycles2022-32-004101/09/2022
In motorcycles, the exposed mechanical parts play important roles in the styling design. The bolts that fasten these parts a good appearance in addition to the fastening function. Since many parts of a motorcycle are designed so as to appeal the mechanical and metallic beauty, needs are higher for silver-color bolts. Motorcycle bolts are exposed to the external environment, so they are required to have also cosmetic durability. Though there is a surface treatment having a higher cosmetic durability such as the chromium plating, due to its metallic gloss like a mirror, chrome-plated bolts are applicable only to specific models and parts. In this study, we developed a surface treatment that enhance the appearance and cosmetic durability required of bolts for motorcycles. The layer of developed surface treatment is dip coating with thin film polyorganosiloxane material on zinc plating. Clarified a zone where both the appearance and the cosmetic durability are attainable through the
Hirayama, Hiroshi, Inoue, Manabu, Koike, Takeshi
Technical Paper
Procedure for Visual Evaluation of Interior and Exterior Automotive TrimJ361_20211212/30/2021
This SAE Recommended Practice applies to parts and materials used in vehicle manufacture which are intended to be acceptable color matches to a specified standard. This document is intended for use with parts or materials which are opaque or nearly so. Materials covered by this document include topcoat paint finishes, interior soft trim, interior and exterior hard trim, and exterior film and flexible trim. This practice requires judgments by observers with a minimum of normal color vision and preferably superior as rated with the FM-100 Hue Test as specified in ASTM E1499, Guide for Selection, Evaluation, and Training of Observers.
Textile and Flexible Plastics Committee
Technical Paper
Steel, Bars, Forgings, Mechanical Tubing and Forging Stock 0.50Cr - 0.12Mo (0.89 - 1.01C)AMS6476F-TEST-REC (Historical)11/09/2021
This specification covers a low-alloy steel in the form of bars, forgings, mechanical tubing, and forging or tubing stock.
AMS E Carbon and Low Alloy Steels Committee
Material Specification
Steel, Bars, Forgings, Mechanical Tubing and Forging Stock 0.50Cr - 0.12Mo (0.89 - 1.01C)AMS6476F (Current)11/09/2021
This specification covers a low-alloy steel in the form of bars, forgings, mechanical tubing, and forging or tubing stock.
AMS E Carbon and Low Alloy Steels Committee
Material Specification
CRIMPING TOOLS, TERMINAL, HAND, WIRE TERMINATION; FOR CRIMP TYPE REMOVABLE CONTACTS, ELECTRIC CONNECTORSAS22520/17A (Current)11/09/2021
AE-8C2 Terminating Devices and Tooling Committee
Technical Standard
Gland Design, O-Ring and Other SealsAS4716D (Current)11/09/2021
This SAE Aerospace Standard (AS) provides standardized gland (groove) design criteria and dimensions for O-ring seal glands for static and dynamic applications, and other seals.
A-6C2 Seals Committee
Technical Standard
Gland Design, O-Ring and Other SealsAS4716D-TEST-REC (Historical)11/09/2021
This SAE Aerospace Standard (AS) provides standardized gland (groove) design criteria and dimensions for O-ring seal glands for static and dynamic applications, and other seals.
A-6C2 Seals Committee
Technical Standard
Test Method and Limits for Bow Height of Aluminum Sheet Samples After Chemical MillingAS6507 (Current)11/02/2021
The results of this test are intended to be a useful indication of the resistance to distortion of bare or two-side Alclad, flat sheet aluminum used in chemical milling applications.
AMS D Nonferrous Alloys Committee
Technical Standard
Aluminum Alloy, Extruded Profiles (2065-T84) 4.2Cu - 1.2Li - 0.52Mg - 0.32Mn - 0.32Ag - 0.1Zr Solution Heat Treated, Stress Relieved by Stretching and Artificially AgedAMS4366A-TEST-REC (Historical)10/28/2021
This specification covers an aluminum-lithium alloy in the form of extruded profiles with a maximum cross-sectional area of 19 in2 (123 cm2) and a maximum circle size of 11 inches (279 mm) from 0.040 to 0.499 inch (1.00 to 12.50 mm) in thickness (see 8.7).
AMS D Nonferrous Alloys Committee
Material Specification
Aluminum Alloy, Extruded Profiles (2065-T84) 4.2Cu - 1.2Li - 0.52Mg - 0.32Mn - 0.32Ag - 0.1Zr Solution Heat Treated, Stress Relieved by Stretching and Artificially AgedAMS4366A (Current)10/28/2021
This specification covers an aluminum-lithium alloy in the form of extruded profiles with a maximum cross-sectional area of 19 in2 (123 cm2) and a maximum circle size of 11 inches (279 mm) from 0.040 to 0.499 inch (1.00 to 12.50 mm) in thickness (see 8.7).
AMS D Nonferrous Alloys Committee
Material Specification
Low-Alloy Steel, Heat-Resistant, Bars, Forgings, Mechanical Tubing, and Forging Stock 0.95Cr - 0.55Mo - 0.30V (0.40 - 0.50C)AMS6304N-TEST-REC (Historical)10/22/2021
This specification covers an aircraft-quality, low-alloy, heat-resistant steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
Material Specification
Steel, Bars, Forgings, Mechanical Tubing and Forging Stock 1.2Cr - 3.25Ni - 0.12Mo (0.07 - 0.13C) (9310) Vacuum Consumable Electrode RemeltedAMS6265R (Current)10/22/2021
This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
Material Specification
Low-Alloy Steel, Heat-Resistant, Bars, Forgings, Mechanical Tubing, and Forging Stock 0.95Cr - 0.55Mo - 0.30V (0.40 - 0.50C)AMS6304N (Current)10/22/2021
This specification covers an aircraft-quality, low-alloy, heat-resistant steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
Material Specification
CONTACTS, ELECTRICAL CONNECTOR, PIN, CRIMP REMOVABLE (FOR AS50151 SERIES AS340X1 CONNECTORS AND AS95234 CONNECTORS)AS39029/124A (Current)10/22/2021
AE-8C1 Connectors Committee
Technical Standard
Steel Bars, Forgings, and Mechanical Tubing and Forging Stock 1.2Cr - 3.25Ni - 0.12Mo (0.07 - 0.13C) (9310) Electroslag Remelted or Consumable Electrode Vacuum RemeltedAMS6267K (Current)10/22/2021
This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
Material Specification
Standard Requirements for Aerospace Organic Coatings Applicator CertificationAS7489A (Current)10/15/2021
This standard establishes the minimum requirements for training, examination, and certification of aerospace coatings application personnel applying liquid organic coatings to interior structural or exterior substrates. It establishes criteria for the certification of personnel requiring appropriate knowledge of the technical principles underlying aircraft surface preparation and coatings application for both protective and decorative purposes. Persons who successfully complete the requirements of this certification standard are considered to be able to successfully and consistently perform a broad spectrum of aerospace coatings application tasks to achieve the desired engineering purposes. This certification is not intended to determine or replace any aerospace coating operation’s proprietary engineering for the depainting, preparation, or subsequent application of organic coatings materials to aircraft surfaces.
AMS G8 Aerospace Organic Coatings Committee
Technical Standard
Insulating Component, Molded, Electrical, Heat Shrinkable, Connector and Cable Accessory, Sealing Strain Relief, General Specification ForAS5258A-TEST-REC (Historical)10/13/2021
This specification covers connector and cable accessory heat shrinkable, electrical insulating, molded components fabricated from various polymer based compositions. These components are intended for use as connector and cable accessory components to provide strain relief, electrical insulation, and environmental sealing.
AE-8C1 Connectors Committee
Technical Standard
Insulating Component, Molded, Electrical, Heat Shrinkable, Connector and Cable Accessory, Sealing Strain Relief, General Specification ForAS5258A (Current)10/13/2021
This specification covers connector and cable accessory heat shrinkable, electrical insulating, molded components fabricated from various polymer based compositions. These components are intended for use as connector and cable accessory components to provide strain relief, electrical insulation, and environmental sealing.
AE-8C1 Connectors Committee
Technical Standard
Steel, Corrosion-Resistant, Bars, Wire, Forgings and Forging Stock 18.5Cr - 10Ni - 0.22Se (303Se) Free-Machining; for Swaging or Upsetting Solution Heat TreatedAMS5641J (Current)10/12/2021
This specification covers a free-machining, corrosion-resistant steel in the form of bars, wire, forgings, and forging stock.
AMS F Corrosion Heat Resistant Alloys Committee
Material Specification
Nickel Plating (Electrodeposited)AMSQQN290D (Current)10/12/2021
AMS B Finishes Processes and Fluids Committee
Material Specification
Transfer Film Composition and Characteristics in Copper-Free NAO Brake Pads2021-01-127810/11/2021
Copper-free non-asbestos-organic (NAO) brake pads have been developed to satisfy the copper content regulations in North America. Copper-free NAO brake pads are required to have a stable friction coefficient owing to the electrification of the control systems, as well as to exhibit improved wear resistance to reduce brake dust emissions. Our previous study indicated that the transfer film formed on the rotor surface affects both the friction coefficient stability and amount of wear. In this study, we investigated how different types of inorganic fillers affect the transfer film formation and its composition in a wear test controlled by temperature. It was confirmed that the main component of the transfer film was iron oxide derived from the rotor. Furthermore, the contained components changed according to the appearance of the rotor surface after each wear test. When the brake pad contained potassium lithium titanate, a transfer film was formed uniformly and stably, the amount of wear
Nishimura, Keiichiro, Masuda, Katsuyuki, Yamamura, Taizo, Hara, Yasuhiro, Ono, Manabu, Sasaki, Shinya
Technical Paper
CRIMPING TOOLS, TERMINAL, HAND, WIRE TERMINATION; IN-SERVICE INSPECTION GAGE FOR AS22520/41 CRIMP TOOLSAS22520/42A (Current)10/08/2021
AE-8C2 Terminating Devices and Tooling Committee
Technical Standard
CRIMPING TOOLS, TERMINAL, HAND, WIRE TERMINATION; IN-SERVICE INSPECTION GAGES FOR AS22520/17 CRIMP TOOLSAS22520/18A (Current)10/06/2021
AE-8C2 Terminating Devices and Tooling Committee
Technical Standard
CONTACTS, ELECTRICAL CONNECTOR, SOCKET, CRIMP REMOVABLE (FOR AS50151 SERIES AS340X1 CONNECTORS AND AS95234 CONNECTORS)AS39029/123A (Current)10/06/2021
AE-8C1 Connectors Committee
Technical Standard
An alternate CED process for low volume BIW manufacturing with single stage vertical dipping2021-28-022710/01/2021
Body in White (BIW) is a major assembly in an automobile. It is made of sheet metal components that are welded together by Resistance spot welding. Assembled BIWs are put through an anti-corrosion process called Cathodic Electrodeposition (CED) and baked to set the CED coat. CED process has an elaborate sequence of rinse cycles and coat cycles. Single stage dipping stations are used for coating large volumes of smaller components. The high-cost multi-stage setup is a commonly used process in large scale BIW manufacturing systems. In the context of small-scale batch production or prototype builds, the extensive setup is not viable. This paper studied the feasibility of CED coating large BIWs in a single stage setup. Multiple process modifications explored to establish single stage setup for BIW coating. Process capability and effectiveness of utilization was studied. The results were analyzed, and the comprehensive process chain was concluded and discussed for implementation.
B, Sivasankar, Selvam, Ganesan, Kannan, Muniya Gounder, voppuru, Naga Sheshank Reddy, Thiruppathi, R
Technical Paper
Effect of Single Layer Thin Film Thermal Barrier Coatings on Mechanical, Thermal and Tribological Characterization of Cast Iron (GJL 300)2021-28-028510/01/2021
Thermal Barrier Coatings (TBCs) are one of the most promising technologies for reducing heat dissipation through the combustion chamber in internal combustion engines. In this paper, Gadolinium Zirconate (GZ) was chosen as coating material and prepared using a solid-state synthesis process. Cast iron (GJL 300) was selected as substrate, which is predominantly used as the cylinder head material, and GZ was deposited using Electron Beam Physical Vapor Deposition Technique (EB-PVD). The mechanical, thermal, and tribological properties were evaluated as per the ASTM standards. Improved hardness and wear resistance is noted on coated substrates. The thermal conductivity and Coefficient of Thermal Expansion (CTE) of the coated substrates were decreased by 2.43% and 6.15% respectively when compared to uncoated substrates. Hence, it is confirmed that thin-film TBCs will also be helpful in retaining some heat inside the combustion chamber of IC engines.
Velusamy, Raja, Swaminathan, Mangudi Rangaswamy, Periyana Pillai, Hariharan, Annamalai, Suresh Babu, Ganapathy, Sakthinathan, Sathishkumar, Dhanalakshmi, Annamalai, Kumarasamy, Venkat, Natarajan, Radhakrishnan PhD, Vignesh, Kumaran, Naveen Kumar, Sharma, Gnanaeshwar
Technical Paper
MOLD IN COLOR PIANNO BLACK PC MATERIAL FOR AUTOMOTIVE EXTERIOR APPLICATION2021-26-024209/22/2021
Aesthetics contribute significantly to the customer buying decision of an automobile. This is traditionally achieved through painting. Sustainability and cost challenges have led automakers to look at substituting painting through molded-in color polymers in decorative bezels like pillar appliques. These appliques and bezels have a unique mix of material requirements that include color tone, gloss, stiffness, scratch resistance and weathering. Polycarbonates are an interesting class of polymers that has potential to meet these challenging requirements. This paper reports the work done in evaluating a polycarbonate compound in piano black shade to meet the functional and aesthetic requirements. The results prove that the material can substitute painting thereby resulting in significant cost savings.
Govindaraj, Karthik, Vimalathithan, Murukesan, Balaji, K V, Samir, Gandhi, hebbar, vinayak
Technical Paper
A Case study on Effect of subsequent operations on shotpeened Crown Wheel Pinion (Hypoid Gear set) & Compressive Residual Stress analysis2021-26-025209/22/2021
Abstract: The prime function of crown wheel pinion is to receive the power from Transmission & distribute to two-wheel Ends. Doing so these members will experience the tremendous Bending Fatigue. Shot peen is the one of the latest technologiesused to improve the bending Fatigue of the CWP. In this particular case- 6 CWP are taken for the Study to understand the effect of the operations after shot peen process. 3 Samples are named as Batch A, another 3 samples are named as Batch B. Both the batch CWP are shot peened. Then as a regular production Practice the Batch A CWP are process through Hard TurningAbrasive Lapping Hot Lubriting (Mn Phosphate)Fully Finish Ready for Assembly. Then Both the Batch A & batch B samples are taken for Residual Stress analysis using X-Ray Diffraction Technique. The measurement location is 50 microns below the surface. The results tabulated,found that Batch A samples shows decrease in Residual stress relatively to Batch B.This evident that post operations
Rao, Yathish
Technical Paper
CABLE, FIBER OPTIC, SINGLE-MODE, 6/125/250 µm, HERMETIC COATED, TIGHT BUFFERAS5382/3A (Current)09/21/2021
AS-3 Fiber Optics and Applied Photonics Committee
Technical Standard
TERMINALS, LUG AND SPLICES, CONDUCTOR, CRIMP STYLE, COPPER TERMINAL, LUG, CRIMP STYLE, COPPER, INSULATED, RING TONGUE, FOR THIN WALL WIRE, TYPE II CLASS 1 FOR 105 °C TOTAL CONDUCTOR TEMPERATUREAS7928/1E (Current)09/21/2021
AE-8C2 Terminating Devices and Tooling Committee
Technical Standard
FERRULE, INNER, UNINSULATED, SHIELD TERMINATING, TYPE I, TWO PIECE, CLASS I, FOR SHIELDED CABLESAS21981A (Current)09/21/2021
AE-8C2 Terminating Devices and Tooling Committee
Technical Standard
FERRULE, OUTER, UNINSULATED, SHIELD TERMINATING, TYPE I, TWO PIECE, CLASS I, FOR SHIELDED CABLESAS21980A (Historical)09/20/2021
AE-8C2 Terminating Devices and Tooling Committee
Technical Standard
Aluminum Alloy Extrusions 8.9Zn - 2.2Cu - 2.2Mg - 0.15Zr (7136-T76511, -T76510) Solution Heat Treated, Stress-Relieved, Straightened, and OveragedAMS4415B-TEST-REC (Historical)09/15/2021
This specification covers an aluminum alloy in the form of extruded bars, rods, wire, profiles (shapes), and tubing 0.040 to 4.000 inches (1.00 to 100.00 mm) in nominal diameter, least dimension, or wall thickness (see 8.7).
AMS D Nonferrous Alloys Committee
Material Specification
Aluminum Alloy Extrusions 8.9Zn - 2.2Cu - 2.2Mg - 0.15Zr (7136-T76511, -T76510) Solution Heat Treated, Stress-Relieved, Straightened, and OveragedAMS4415B (Current)09/15/2021
This specification covers an aluminum alloy in the form of extruded bars, rods, wire, profiles (shapes), and tubing 0.040 to 4.000 inches (1.00 to 100.00 mm) in nominal diameter, least dimension, or wall thickness (see 8.7).
AMS D Nonferrous Alloys Committee
Material Specification
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