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Copper Alloy, Brazing Filler Metal, 52.5Cu - 38Mn - 9.5Ni, 1615 to 1700 °F (879 to 927 °C) Solidus-Liquidus Range

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4764G
  • Current
Published 2019-06-17 by SAE International in United States

This specification covers a copper alloy in the form of wire, rod, sheet, strip, foil, and powder and a viscous mixture (paste) of powder in a suitable binder.

 
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Standard Practice for Production, Distribution, and Procurement of Metal Stock

AMS G Titanium and Refractory Metals Committee
  • Aerospace Standard
  • AS6279B
  • Current
Published 2019-06-10 by SAE International in United States

This SAE Aerospace Standard (AS) establishes requirements applicable to metal stock that is ordered and produced in accordance with an Aerospace Material Specification (AMS). Topics include producer requirements, distributor requirements, size and grain orientation nomenclature, and purchaser ordering information to distributors. Requirements of this document have been developed to address titanium and titanium alloys, aluminum and aluminum alloys, carbon and alloy steels, and corrosion and heat-resistant alloys.

 
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Groove Design - Metal Face Seal

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • AIR1108A
  • Current
Published 2019-06-06 by SAE International in United States

Groove designs presented herein are applicable for use with machined or formed metal seals which are similar in configuration to those shown in figure 3, which operate under internal pressure or in vacuum service and which have been specifically qualified or recommended by the purchaser or the manufacturer for use with this AIR. They are also applicable for use with metal o-rings (e.g., MS9142 MS9202 thru MS9205) where interchangeability with machined or formed metal seals is desired. For metal o-ring groove designs where interchangeability is not a requirement refer to ARP674.

 
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Broadband Membrane-Type Acoustic Metamaterial Structures with Polymorphic Anti-Resonance Modes

Gissing Tech. Co., Ltd.-Qianqian Zhang, Xiujie Tian, Yuying Jiang, Wei Huang, Keda Zhu
Xi’an Jiaotong University-Guojian Zhou, Jiu Hui Wu
Published 2019-06-05 by SAE International in United States
The researches indicate that rational design of membrane-type acoustic metamaterial (MAM) can make it have a high sound transmission loss (STL) at the anti-resonant frequency. Based on the principle of local resonance of acoustic metamaterials, this paper studied the coupling interactions between sound field and vibration modes, and designed four lightweight MAM structural units with different distributed harmonic oscillators, and then the anti-resonant behaviors of different units within the low frequency were gradually analyzed. The regulation mechanism of continuous polymorphic anti-resonance modes on broadening STL bandwidth was further revealed, and the STL characteristics have been verified within the low-frequency range by numerical simulation and experiments. The results show that the design of a single cross-shaped resonator can increase the diversity of anti-resonance modes and eliminate the node-circular-type resonance mode, then ensure the wider STL bandwidth. Furthermore, four metal platelets set symmetrically between the swing arms based on the unit above increase the local anti-resonance modes of the new unit, which greatly expand the STL bandwidth by shifting its upper limit to the right. In addition,…
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Optimization of Multi-Layer Panel Constructions Using Experimental Modeling via Transfer Matrix Method

Bruel & Kjaer North America, Inc.-Edward Ray Green, John Anton
Published 2019-06-05 by SAE International in United States
In a previous paper [1], a method was introduced to predict the sound transmission loss (STL) performance of multi-layer panel constructions using a measurement-based transfer matrix method. The technique is unique because the characterization of the poro-elastic material is strictly measurement based and does not require modeling the material. In this paper, it is demonstrated how the technique is used to optimize the STL of lightweight, multi-layer panel constructions. Measured properties of several decoupler materials (shoddy and foam) are combined with sheet metal and barrier layers to find optimal combinations. The material properties are measured with the impedance tube per ASTM E2611 [2].
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Hose Assembly, Metal - Medium Pressure, Flared, Welded, Straight to 90°

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5460C
  • Current
Published 2019-06-03 by SAE International in United States

Scope is unavailable.

 
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Hose Assembly, Metal - Medium Pressure, Flared, Welded, 45° to 45°

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5461C
  • Current
Published 2019-06-03 by SAE International in United States

Scope is unavailable.

 
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Hose Assembly, Metal - Medium Pressure, Flared, Welded, 90° to 90°

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5463C
  • Current
Published 2019-06-03 by SAE International in United States

Scope is unavailable.

 
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Hose Assembly, Metal - Medium Pressure, Flared, Welded, Straight to 45°

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5459C
  • Current
Published 2019-06-03 by SAE International in United States

Scope is unavailable.

 
new

Hose Assembly, Metal - Medium Pressure, Flared, Welded, 45° to 90°

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5462C
  • Current
Published 2019-06-03 by SAE International in United States

Scope is unavailable.