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2015-06-18
Standard
AS6886
Counterfeiting of refrigerants has seen a dramatic rise over the past two decades. This rise can be partially attributed to global restrictions placed on production and use of refrigerants by the 1987 Montreal and the 1997 Kyoto Protocols (1, 2). These Protocols regulate the gradual phase-out and strict regulations on the use of refrigerants with high Ozone Depletion Potential (ODP) and high Global Warming Potential (GWP). These protocols require that older refrigerants shall be replaced with newer, more expensive, and environmentally friendly chemicals (3, 4) and necessitates redesigned or replaced equipment to operate efficiently with these new refrigerants.
2015-06-15
Journal Article
2015-01-2229
Benjamin Joodi, Scott Allen Noll, Jason Dreyer, Rajendra Singh
Abstract Elastomeric joints are utilized in many automotive applications, and exhibit frequency and excitation amplitude dependent properties. Current methods commonly identify only the cross-point joint property using displacement excitation at stepped single frequencies. This process is often time consuming and is limited to measuring a single dynamic stiffness term of the joint stiffness matrix. This study focuses on developing tractable laboratory inverse experiments to identify frequency dependent stiffness matrices up to 1000 Hz. Direct measurements are performed on a commercial elastomer test system and an inverse experiment consisting of an elastic beam (with a square cross section) attached to a cylindrical elastomeric joint. Sources of error in the inverse methodology are thoroughly examined and explained through simulation which include ill-conditioning of matrices and the sensitivity to modeling error.
2015-06-15
Technical Paper
2015-01-2230
Thomas L. Lago
Abstract Chatter vibrations are causing large monetary losses daily in industry. New materials have increased the challenges with harmful vibration levels. Since the vibrations, when observed as a final result, are chaotic and the vibration process nonlinear, it is a challenging task to deal with it. It is also a common “understanding” in the cutting industry that chatter is RPM (the rotational speed) dependent, since the behavior changes with RPM. Many attempts have been done over many years to mitigate and understand the vibrations. In our vast research on these topics, we have found that it is rewarding to classify the vibrations into categories, enabling a better understanding of its underlying physics and “source of vibrations,” and thus also the formulation of a possible remedy. An analysis approach has been developed where vibrations are analyzed and categorized and a GO/NOGO indicator is telling if the machine has the “right type of vibrations.”
2015-06-12
WIP Standard
AMS4990C
This specification covers a titanium alloy in the form of sheet, strip, and plate. This material is typically used for parts requiring high strength-to-weight ratio and stability up to 550 °F (288 °C), but usage is not limited to such applications.
2015-06-09
Standard
AMS4246E
This specification covers an aluminum alloy in the form of welding wire.
2015-06-08
Standard
AMS4371B
This specification covers a magnesium alloy in the form of rolled plate from 0.500 up to 6.0 inches (12.7 to152.4 mm) inches inclusive (See 8.4).
2015-06-05
Article
Sun Hydraulics Corp. has announced a new way to configure embedded amplifiers without using a PC or connecting with wires, calling the development “a major advance in the fluid power industry.”
2015-06-04
Article
Metal laser melting has made a successful leap from rapid prototyping to an approved manufacturing technology, and the method is increasingly becoming an option for companies in high-tech industries, according to Toolcraft. And now the German manufacturer has teamed with Airbus APWorks to offer another option for additive manufacturing—the Airbus subsidiary’s Scalmalloy high-performance aluminum powder.
2015-06-03
Standard
AMS4460A
This specification covers an aluminum alloy in the form of sheet, clad on two sides.
2015-06-02
Standard
AMS4235C
This specification covers an aluminum alloy in the form of sand, permanent mold, and composite mold castings.
2015-06-02
Magazine
Balancing GDI fuel economy and emissions Will OEMs have to adopt gasoline particulate filters to comply with stringent new emissions regulations? Top engineers discuss current developments. Cameras look to go the distance Automakers seek vision systems with greater distances, improved reliability, and more functionality, thanks to ruggedized complementary metal-oxide semiconductor technologies. Mixing metals Cadillac pursues aluminum/steel mix for new CT6 luxury sedan, leading to advances in body assembly.
2015-06-02
Standard
AMS4236D
This specification covers an aluminum alloy in the form of sand, investment, permanent mold, and composite mold castings.
2015-06-01
Standard
AMS03_28PT3
This SAE Standard specifies the requirements for coatings of titanium nitride on non-corrosion resisting and corrosion resisting steels, cast irons and other suitable materials. Standard engineering items such as coated tools, drills and dies would not normally be included.
2015-06-01
Standard
AMS6906B
This specification covers a titanium alloy in the form of bars up through 4.000 inches (101.60 mm) in nominal diameter or least distance between parallel sides, inclusive, forgings of thickness up through 4.000 inches (101.60 mm), inclusive, and stock for forging of any size (See 8.7).
2015-05-30
WIP Standard
AMS2770N
This specification specifies the engineering requirements for heat treatment, by part fabricators (users) or their vendors or subcontractors, of parts (See 8.8.1). It also covers heat treatment by warehouses or distributors converting raw material from one temper to another temper (See 1.3 and 8.5). It covers the following aluminum alloys: 1100, 2004, 2014, 2017, 2024, 2098, 2117, 2124, 2219, 2224, 3003, 5052, 6013, 6061, 6063, 6066, 6951, 7049, 7050, 7075, 7149, 7178, 7249, 7475
2015-05-29
Article
BENZ adjustable angle heads help manufacturers to improve their machining and milling operations by enhancing productivity and efficiency.
2015-05-28
Article
Additive manufacturing is making significant headway in aerospace production programs, as evidenced by recent announcements that Airbus and rocket manufacturer United Launch Alliance both are—or soon will be—flying aircraft that incorporate 3D-printed parts enabled by Stratasys.
2015-05-28
Standard
AMS4259B
This specification covers an aluminum alloy in the form of sheet. This sheet has been used typically for structural parts requiring the strength of 2024-T3 and lower density, but usage is not limited to such applications.
2015-05-27
Article
Efforts to replace tropical rubber trees with a wild desert shrub that grows in Southwestern U.S. and Mexico are just beginning to bear fruit.
2015-05-26
Standard
AS6117A
SCOPE IS UNAVAILABLE.
2015-05-26
Standard
AMS5397E
This specification covers a corrosion and heat-resistant nickel alloy in the form of investment castings.
2015-05-26
Standard
AMS2770M
This specification specifies the engineering requirements for heat treatment, by part fabricators (users) or their vendors or subcontractors, of parts (See 8.8.1). It also covers heat treatment by warehouses or distributors converting raw material from one temper to another temper (See 1.3 and 8.5). It covers the following aluminum alloys: 1100, 2004, 2014, 2017, 2024, 2098, 2117, 2124, 2219, 2224, 3003, 5052, 6013, 6061, 6063, 6066, 6951, 7049, 7050, 7075, 7149, 7178, 7249, 7475
2015-05-21
Standard
AMS03_20
This SAE Standard specifies the requirements for the electro-deposition of zinc on non-corrosion resisting steel items for protection against corrosion, and on copper-base alloy items and corrosion resisting steel items for the reduction of contact corrosion of less noble metallic materials. Zinc coatings shall not be used on items which are liable to be subjected to temperatures exceeding 350 °C.
2015-05-21
Standard
AMS03_19
This SAE Standard specifies the requirements for the electro-deposition of cadmium on non-corrosion resisting steel items for protection against corrosion, and on copper based alloy items and corrosion resisting steel items for the reduction of contact corrosion of less noble metallic materials.
2015-05-21
Standard
AMS03_27
This SAE Standard specifies the requirements for the nickel-plating of ferrous metals, copper alloys, aluminum alloys and zinc alloys for one or more of the following purposes: a. the production of wear-resistant surfaces; b. the building up of worn or over-machined surfaces; c. corrosion resistance; d. to provide an undercoat for subsequent deposits, e.g., chromium.
2015-05-21
Standard
AMS03_28PT1
This SAE Standard covers the requirements for coatings of high purity aluminum on low alloy steels, high strength steels, corrosion-resisting steels, aluminum alloys and titanium alloys and other materials where appropriate.
2015-05-21
Standard
AMS03_28PT2
This SAE Standard covers the requirements for the deposition of cadmium coatings on carbon steel, low alloy steels, high strength steels, corrosion resisting steels and other materials where appropriate.
2015-05-21
Standard
AMS03_25
This SAE Standard specifies the properties of sulphuric acid anodizing of aluminum and aluminum alloys.
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