Browse Topic: Finishing

Items (271)

Investigation of Al2O3-Ni coated cast iron brake rotors under modified brake dynamometer test standards

2022-01-030903/29/2022

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

Silver surface treatment applicable to bolts for motorcycles

2022-32-004101/09/2022

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

Powertrain Friction Reduction by Synergistic Optimization of Cylinder Bore Surface and Lubricant - Part 2: Engine Tribology Simulations and Tests

2021-01-121709/21/2021

Since a significant percent of fuel in cars is consumed by friction, with powertrain friction being one of the chief culprits, the development of low friction powertrains is an important task [1-3]. The introduction of advanced surface finishing and coating methods, such as thermally sprayed coatings, self-lubricating hard coatings, mechanochemical surface finishing, helical slide honing etc. together with a shift towards low viscosity synthetic lubricants help further improve fuel economy and reduce GHG emissions. For passenger cars, a change from the legacy SAE 15W-40 grade to SAE 0W-20 brings on average 3-4% improvement in fuel economy under the NEDC or EPA conditions, and the subsequent migration to 0W-8 can bring an additional 2-3%. The primary obstacle to continually lowering lubricant viscosity is increased engine wear. The hydrodynamic lubricant film thickness is directly proportional to lubricant viscosity. Therefore, to maintain hydrodynamic lubrication, substantial

Zhmud, Boris, Tomanik, Eduardo, Jiménez, Antonio J., Profito, Francisco, Tormos, Bernardo

T-Bolt and Eye Bolt, A286 CRES, 1000 °F Fatigue Rated

AS4108D (Current)

09/01/2021

This specification defines the requirements for A286 CRES T-bolts and eye bolts, with room temperature tensile strength of a minimum of 160000 psi, for use with clamps and V-band couplings at 1000 °F maximum ambient temperature.

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies

T-Bolt and Eye Bolt, A286 CRES, 1000 °F Fatigue Rated

AS4108D-TEST-REC (Historical)09/01/2021

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies

Combined CFD and CAA Simulations with Impedance Boundary Conditions

2021-01-104808/31/2021

In computational fluid dynamic (CFD) and computational aeroacoustics (CAA) simulations, the wall surface is normally treated as a purely reflective wall. However, some surface treatments are usually applied in experiments. Thus, the acoustic simulations cannot be validated by experimental results. One of the major challenges is how to define acoustically boundary conditions in a well-posed way. In aeroacoustics analysis, impedance is a quantity to characterize reflectivity and absorption of an acoustically treated surface, which may be introduced into the numerical models as a frequency-domain boundary condition. However, CFD and CAA simulations are time-domain computations, meaning the frequency-domain impedance boundary condition cannot be adopted directly. Several methods, including the three-parameter model, the z-transform method and the reflection coefficient model, were developed. In the present study, a coupling method that combines the time-domain impedance boundary condition

Li, Ang, Chen, Jun, Liu, Yangfan

A Multi-Physics Approach to Predict High Frequency NVH in Oil Pump Drives

2021-01-109908/31/2021

NVH problems are often the result of mechanisms that originate through complex interactions between different physical domains (flow, structural/mechanical, control logic, etc.). Parallel-shaft spur gears subject to light torque loading caused by the dynamic pressure fluctuation of the oil used in engine accessory or transmission pump drives are likely to exhibit unusual gear whine associated with higher order meshing harmonics, even when the tooth profile has a high-quality grade finishing. Therefore, accurate integrated models are becoming a requirement to solve modern NVH problems.

Foraste Gomez, Llorenc, Aihara, Rodrigo, Chen, Yuping, Pan, Fumin, Nowaczyk, Kenneth

Use of Cavitation Abrasive Surface Finishing to Improve the Fatigue Properties of Additive Manufactured Titanium Alloy Ti6Al4V

2021-01-002403/02/2021

was 185 ± 9 MPa for the as-built DMLS specimen, 169 ± 14 MPa for the as-built EBM specimen, 425 ± 9 MPa for the DMLS specimen treated using CASF & cavitation peening, and 386 ± 9 MPa for the EBM specimen treated using CASF & cavitation peening.

Sanders, Daniel, Soyama, Hitoshi, de Silva, Channa

Plating, Nickel Low-Stressed Deposit

AMS2424G (Current)

02/26/2021

This specification covers the requirements for electrodeposited low-stressed nickel.

AMS B Finishes Processes and Fluids Committee

CLAMP, LOOP, CUSHIONED, ELONGATED, METRIC

MA14272A (Current)

12/29/2020

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies

CLAMP, LOOP, CUSHIONED, ELONGATED, METRIC

MA14272A-TEST-REC (Historical)12/29/2020

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies

NEW FINISH DEVELOPMENT DOCUMENT

USCAR32-1 (Current)

11/19/2020

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.

USCAR

SAE TOMORROW TODAY: Why Infrastructure Planning is Undergoing a Massive Shift

1291310/29/2020

A strong infrastructure is the backbone for transportation. This week, host Grayson Brulte sits down with Malcolm Dougherty, Sr. Vice President and National Practice Executive at global engineering firm Michael Baker International to talk about creating a seamless multimodal transportation system that positively benefits society. He looks at his career journey, which began when the U.S. was finishing the interstate highway system, and how we've moved to a more strategic approach for handling transportation, mobility, access and demand. Malcolm discusses planning for a frictionless mobility future through singular payment options and connected modes of travel; the infrastructure changes and energy grid improvements needed to further support the shift to electric cars and buses; and how airports and stadiums, especially those in dense urban environments, will be impacted by vehicle electrification. Learn more about Michael Baker International at https://mbakerintl.com.

Hineman, Marcie

Steel Tubing, Seamless 0.15 Carbon Maximum Annealed

AMS5050L (Current)

08/04/2020

This specification covers a low-carbon steel in the form of seamless tubing.

AMS E Carbon and Low Alloy Steels Committee

Steel Tubing, Seamless 0.15 Carbon Maximum Annealed

AMS5050L-TEST-REC (Historical)08/04/2020

This specification covers a low-carbon steel in the form of seamless tubing.

AMS E Carbon and Low Alloy Steels Committee

Development of a New High Orientation Paint System to Achieve Outstanding Real Metallic Designs

2020-01-089904/14/2020

Silver metallic colors with thin and smooth aluminum flake pigments have been introduced for luxury brand OEMs. Regarding the paint formulation for these types of colors, low non-volatile(NV) and high aluminum flake pigment contents are known as technology for high metallic appearance designs. However, there are two technical concerns. First is mottling which is caused by uneven distribution of the aluminum flake pigments in paint film and second is poor film property due to high aluminum pigment concentration in paint film. Therefore, current paint systems have limitation of paint design. As a countermeasure for those two concerns, we had investigated cellulose nanofiber (CNF) dispersion liquid as both the coating binder and rheology control agent in a new type of waterborne paint system. CNF is an effective rheology control agent because it has strong hydrogen bonds with other fiber surfaces in waterborne paint. The CNF shows similar viscosity result with conventional water borne

Tsukimori, Takao

Choose Surface Treatments Early to Avoid Future Problems

TBMG-3638504/01/2020

Too often, design engineers look at coating parts as an afterthought. Rather than being part of the discussion in the early stages of design, engineers sometimes try to solve problems with coatings during — or even after — manufacturing. While surface treatments such as anodizing, electroplating, and thermal spray provide their own unique set of properties and benefits, these processes also have limitations that demand attention early in the design process to ensure optimal performance.

Alternatives to Cadmium Plating

AIR4160B (Current)03/24/2020

To document and provide access to information obtained by an industry survey.

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies

Streamlining Post-Processing in Additive Manufacturing

TBMG-3566612/01/2019

Undoubtedly there are many benefits associated with the use of additive manufacturing (AM) as a production technology. On a pan-industrial basis, manufacturers exploit the fact that through the use of AM they can not only build complex parts, in one piece, which were previously impossible, but they can also build stronger, lighter-weight parts, reduce material consumption, and benefit from assembly component consolidation across a range of applications. These advantages have all been well documented during the last 10-20 years as AM has emerged as a truly disruptive technology for prototyping and production, and are invariably seen as being enabled by the additive hardware that builds the parts. In reality, however, this is a partial picture, particularly for serial production applications of AM. AM hardware systems are actually just one part – albeit a vital part – of an extensive ecosystem of technologies that enable AM, both pre- and post-build.

Implantables to Augment Missing Body Tissue

TBMG-3550911/01/2019

Kanfit3D has entered into a joint research partnership with the University of Brescia (Italy). The project will develop unique implantable structures, using additive layer manufacturing (ALM) technologies, for replacing or augmenting missing body tissue with customized surface treatments for improved osseointegration to achieve a better biological response within a reduced healing time.

Development of Regenerative Brake Control Strategy to Remove Brake Rust

2019-01-212509/15/2019

This study is the development concept of regenerative braking cooperative control to reduce creep groan noise considering fuel efficiency. Creep groan noise is a traditional brake system noise that has been improved with advances in technology such as brake materials, surface treatment and transfer path. However, recently creep groan noise is again an issue in electronic vehicle which applied a drive motor. Generally, creep groan noise frequently occurs when rust occurs on the friction surface of the brake disc and the brake pad is humidified, but it is easily removed by friction braking several times. However, in the case of electric vehicles which applied regenerative braking system, it is hard to remove. In case of electric vehicle, instead of friction braking, most of brake toques are made by motor regenerative braking. Therefore, even if the same conventional brake system and chassis system are applied, the noise level of the electric vehicle is higher than gasoline or diesel

Jang, Sora, Kim, Gwichul

Superfinishing of HVOF Applied Tungsten Carbide Coatings

AMS2452 (Current)07/15/2019

This specification covers requirements for the superfinishing of High Velocity Oxygen/Fuel (HVOF) applied tungsten carbide thermal spray coatings.

AMS B Finishes Processes and Fluids Committee

Aerospace Series - Quality Management Systems - Nonconformity Data Definition and Documentation

AS9131D (Current)

05/31/2019

This standard defines the common nonconformity data definition and documentation that shall be exchanged between an internal/external supplier or sub-tier supplier, and the customer when informing about a nonconformity requiring formal decision. The requirements are applicable, partly or totally, when reporting a product nonconformity to the owner or operator, as user of the end item (e.g., engine, aircraft, spacecraft, helicopter), if specified by contract. Reporting of nonconformity data, either electronically or conventionally on paper, is subject to the terms and conditions of the contract. This also includes, where applicable, data access under export control regulations.

G-14 Americas Aerospace Quality Standards Committee (AAQSC)

Aerospace Series - Quality Management Systems - Nonconformity Data Definition and Documentation

AS9131D-TEST-REC (Historical)05/31/2019

G-14 Americas Aerospace Quality Standards Committee (AAQSC)

INSERT, SCREW THREAD, SELF LOCKING PLASTIC LOCKING DEVICE, SOLID FILM LUBRICATED SELF-BROACHING KEYS, UNS S66286

AS3502A (Current)

05/24/2019

E-25 General Standards for Aerospace and Propulsion Systems

Aluminum Extrusions Help Ski Maker Achieve Olympic-Sized Goals

TBMG-3369002/01/2019

Minalex Corp. Whitehouse Station, NJ

DATC spells progress for defense prototyping

19AUTP02_0302/01/2019

A public-private partnership between the U.S. Army's TARDEC and SAE International is making it easier for suppliers to engage the government on military ground-vehicle technology projects. A slogging bureaucracy, miles of “red tape” and a sea of acronyms are just some of the hurdles that keep many suppliers from working with the U.S. defense industry on ground-vehicle projects. For years the government, led by the U.S. Army Tank-Automotive Research, Development and Engineering Center (TARDEC), sought to develop a streamlined procurement process. Their aim was to speed the adoption of private-sector innovations, particularly for prototype development, while expanding access for smaller, non-traditional military suppliers. A breakthrough came in 2016, when TARDEC partnered with SAE International's Industry Technologies Consortia affiliate to form the nonprofit Defense Automotive Technologies Consortium; DATC currently has 190 members-70% of which are non-traditionals. The consortium

Brooke, Lindsay

Does Your Coating System Require Climate Control? What to Look For and What to Expect

TBMG-3342212/01/2018

There is one aspect of the paint and coatings finishing business virtually guaranteed to give the budget director heart failure: climate control. There's no way around it – climate control systems are expensive.

Visionary's Take: How a Vision Becomes a Company (Part 1 of 2)

1239310/17/2018

Can you become a visionary or are you born one? How does a visionary capture an opportunity and makes it a successful business? Are engineers more qualified to solve technical problems or run companies? SAE's "The Visionary's Take" addresses these and many other questions, by talking directly with those who have dared to tackle difficult engineering problems and create real-life products out of their experience. In these short episodes, Daniel Hutchinson, Founder and CTO of PostProcess Technologies talks about his experience in creating a brand-new company in the already competitive world of additive manufacturing, and specifically focusing on post-printing. Founded in 2014, PostProcess Technologies developed a unique triad of software, hardware and chemistry that works together to make the process of removing supports and surface finishing easier to deal with. This is the phase where mistakes can ruin a great manufacturing run: parts can break when their support is removed, for

Visionary's Take: How a Vision Becomes a Company (Part 2 of 2)

1239210/17/2018

COVER - ENGINE ACCESSORY DRIVE, SQUARE, 127.28 BC, METRIC AMS4424 (UNS M11630) OR AMS4484

MA3454B (Current)09/17/2018

E-25 General Standards for Aerospace and Propulsion Systems

Development of friction coefficient controller for E-coat (KTL)

2018-36-020009/03/2018

Global competitiveness increase in the past decades has been a crucial factor for the technological advance and industrial automotive development. Possibility of reducing costs, concentrate knowledge and increase in manufacturing efficiency has lead to development of global automotive platforms. In this scenario, the supply chain needs for adaptations that allow evolution at the same fastness imposed by original equipment manufacturer (OEM). Such demands reflect directly on the fasters market requiring lighter and stronger products. Stronger products are obtained by increasing corrosion resistance and lowering friction coefficient, in order to increase the clamp load and, consequently, reduce the weight without reducing performance. However, increasing corrosion resistance causes, generally, an increase in friction coefficient and, consequently, a decrease in clamp load. To minimize such effects, the surface coating industry has been developing, over the years, friction controllers

Egêa, Renan Barranqueiro, Primolini, Alexandre, Maia, Bruno Inácio da

3D-Printed Active Materials for Robots

TBMG-3283809/01/2018

The Army uses robots that are structurally rigid, making them impractical when performing military operations in highly congested and contested urban environments where covert maneuvering is critical for gaining military superiority. Stealthy maneuvering requires high structural flexibility and distributive control to sneak into confined or restricted spaces, operate for extended periods, and emulate biological morphologies and adaptability.

Plating, Brush, Zinc-Nickel Low Hydrogen Embrittlement

AMS2451/9C (Current)08/02/2018

This specification covers the requirements for brush plating of zinc-nickel by electrodeposition.

AMS B Finishes Processes and Fluids Committee

Titanium Alloy, Bars, Wire, Forgings, and Rings 6.0Al - 4.0V Annealed, Heat Treatable

AMS4967M (Historical)

06/12/2018

This specification covers a titanium alloy in the form of bars, wire, forgings, flash welded rings up through 4.000 inches (101.60 mm) in diameter or least distance between parallel sides and stock of any size for forging, heading, or flash welded rings (see 8.6).

AMS G Titanium and Refractory Metals Committee