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Inline Optical Power Monitoring, Network End-to-End Data Link Evaluation System

AS-3 Fiber Optics and Applied Photonics Committee
  • Aerospace Standard
  • AIR6552/1
  • Current
Published 2019-10-02 by SAE International in United States

This document establishes methods to obtain, store, and access data about the health of a fiber optic network using commercially available inline optical power monitoring sensors. This document is intended for:

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Aluminum Alloy, Hand Forgings 7.5Zn - 1.6Cu - 1.5Mg - 0.12Zr (7085-T7452) Solution Heat Treated, Compression Stress-Relieved, and Overaged

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4414
  • Current
Published 2019-09-19 by SAE International in United States
This specification covers an aluminum alloy in the form of hand forgings 12 inches (305 mm) and under in nominal thickness and of forging stock.
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Orbital Forming of Automotive Wheel Bearings

Orbitform-Jake Sponsler
Published 2019-09-15 by SAE International in United States
Orbital forming is considered an optimal assembly process for many designs of automotive wheel bearing assemblies. More specifically, this process involves forming the spindle over the inner race of the wheel bearing to maximize surface area contact on the inner ring for retention, and to maintain bearing preload. The unique forming properties and precise controls allow orbital forming to produce an ideal finished retention feature and form for these types of bearings. This paper discusses the specific benefits of orbital forming of automotive wheel bearings. Forming basics, the physics behind the benefits of orbital forming, as well as pre-form lip geometry and other part design considerations are presented. Advanced machine control methodologies and historical machine process improvements are also reviewed concluding with next steps in process control and in-machine quality assurance.
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Aging Effect on Disc Pad Properties

Compact International (1994) Co., Ltd.-Meechai Sriwiboon, Kritsana Kaewlob, Nipon Tiempan
SKR Consulting Inc.-Seong K. Rhee
Published 2019-09-15 by SAE International in United States
One low-copper formulation and one copper-free formulation were made into disc pads, and both of them were cured under 4 different conditions. These pads had no backing layer and no scorched layer. Pad thickness, dynamic modulus and natural frequencies were continuously monitored over a period of 12 months. After 12 months at room temperature, pad thickness, dynamic modulus and natural frequencies all increased to higher values. The low-copper formulation increased relatively rapidly during the first 60 days and the copper-free formulation increased relatively rapidly for the first 90 days, and then slowly thereafter. Two competing processes are found to be taking place simultaneously; internal stress relief leading to pad expansion and cross-linking of the resin leading to pad shrinkage. As the pad properties are changing continuously, the timing of property measurement becomes an important issue for quality assurance. Implications of these changing properties are discussed for friction, wear, brake squeal and squeal modeling/simulation, and simple non-destructive test methods are recommended for checking pad quality consistency.
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CONNECTOR RECEPTACLE, REVERSE BAYONET COUPLING, DUMMY STOWAGE

AE-8C1 Connectors Committee
  • Aerospace Standard
  • AS95234/12
  • Current
Published 2019-08-27 by SAE International in United States
No Abstract Available.
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TERMINAL, LUG, CRIMP STYLE, COPPER, UNINSULATED, RING TONGUE, TIN WHISKER RESISTANT, TYPE I, CLASS I, FOR 150 °C TOTAL CONDUCTOR TEMPERATURE

AE-8C2 Terminating Devices and Tooling Committee
  • Aerospace Standard
  • AS7928/11D
  • Current
Published 2019-08-21 by SAE International in United States
No Abstract Available.
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Four Best Practices for Software Testing

  • Magazine Article
  • TBMG-34972
Published 2019-08-01 by Tech Briefs Media Group in United States

Great quality assurance is what turns great software into great product. Testing is a crucial part of any software development process, whether to ensure safety in a medical device, to minimize risk in a financial application, or to improve user satisfaction in a web site. As consultants, Geisel Software works with a variety of organizations, gaining exposure to many different products, development processes, and testing approaches. This provides the firm with a unique opportunity to see what succeeds for almost any project, along with common blunders. Here are some of the best practices we've encountered or employed in software testing.

Why Cloud QMS Better Supports Regulatory Compliance

  • Magazine Article
  • TBMG-34806
Published 2019-07-01 by Tech Briefs Media Group in United States

Companies regulated by the U.S. Food and Drug administration (FDA) need to establish current good manufacturing practices (CGMPs) as part of Title 21 CFR part 820 requirements. This includes creation of quality systems to ensure development of safe and effective devices. More specifically, medical device manufacturers must establish methods and procedures to design, produce, and deliver devices that meet the quality system standard.1

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Titanium Hydraulic Tubing, Ti-3Al-2.5V Cold Worked and Stress Relieved, Up to 35000 kPa (5080 psi), Requirements for Qualification Testing and Control

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5620C
  • Current
Published 2019-06-04 by SAE International in United States
This SAE Aerospace Standard (AS) shall be used in conjunction with AMS4946 to provide requirements for qualification testing and for qualified products listing (QPL) and qualified manufacturer listing (QML) for Ti-3Al-2.5V cold worked and stress relieved hydraulic system tubing. The basic tubing shall comply with the requirements of AMS4946.
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Getting the Most Out of Industrial CT Scanning

Aerospace & Defense Technology: June 2019

  • Magazine Article
  • 19AERP06_12
Published 2019-06-01 by SAE International in United States

Industrial CT analysis software uncovers aerospace manufacturing defects that scanning alone might miss.

Quality assurance and flight certification of critical aerospace parts and assemblies have reached new levels of sophistication in recent years. Leading aerospace and defense manufacturers worldwide now consider computed tomography (CT) scanning to be an essential part of their non-destructive testing (NDT) toolkit. Far more powerful than the CT used to scan the human body, industrial CT can penetrate almost every material, from superalloys to lead, revealing hidden details that previously could only be found by cutting and destroying finished parts.

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