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Magazine

Aerospace & Defense Technology: December 2023

2023-12-07
How Distributed Metal Additive Manufacturing Can Add a Surge to Military Supplier Strategies Ensure Aerospace Composite Quality with Force Measurement, Material Testing How Business Networks Can Help Stabilize the A&D Supply Chain A blueprint for modernizing the supply chain for greater connectedness and collaboration. Unlocking the Potential of 3D-Printed Polymers in Aerospace and Defense How to Select the Right Silicone for Space Applications Key Measurements to Maintain Performance of Critical Electronic Systems on Military Aircraft and Warships Physicists Develop a New Type of Antenna Towards Sustainable Recycling of Epoxy-Based Polymers: Approaches and Challenges of Epoxy Biodegradation Composites are especially important for the development and implementation of sustainable technologies such as wind power, energy-efficient aircrafts, and electric cars.
Magazine

Aerospace & Defense Technology: December 2022

2022-12-01
Why are Aerospace & Defense Companies Embracing Additive Manufacturing? Simplifying Power Design with Modular Architectures The Role of DevSecOps in Modern Edge Systems Making Machines Curious Designing Multi-Channel Microwave Radio Systems Using Optical Interconnects Solving Military Satellite, Radar and 5G Communications Challenges with GaN-on-SiC MMIC Power Amplifiers Advanced Airborne Defensive Laser for Incorporation on Strike Fighter Aircraft A technical and operational analysis of an airborne "hard-kill" Ytterbium fiber laser-based anti-missile system for use on strike fighters. Additive Manufacturing Utilizing a Novel In-Line Mixing System for Design of Functionally Graded Ceramic Composites Exploring the development of a direct ink writing system with multimaterial and in-line mixing capabilities for printing inks composed of high solids-loaded ceramic particulate suspensions.
Book

Composite Materials Handbook Volume 5 - Revision A

2017-06-29
The fifth volume of this six-volume compendium publishes technical guidance and properties on ceramic matrix composite material systems. The selected guidance on technical topics related to this class of composites includes material selection, processing, characterization, testing, data reduction, design, analysis, quality control, application, case histories, and lessons learned of typical ceramic matrix composite materials. Volume 5, which covers ceramic matrix composites, supersedes MIL-HDBK-17-5 of June 17, 2002. The Composite Materials Handbook, referred to by industry groups as CMH-17, is an engineering reference tool that contains over 1,000 records of the latest test data for polymer matrix, metal matrix, ceramic matrix, and structural sandwich composites. CMH-17 provides information and guidance necessary to design and fabricate end items from composite materials.
Book

Fatigue and Durability of Metals at High Temperatures

2009-07-01
From concept to application, Fatigue and Durability of Metals at High Temperatures describes the method of strain-range partitioning for analyzing time-dependent fatigue. Creep (time-dependent) deformation is first introduced for monotonic and cyclic loading. Multiple chapters then discuss strain-range partitioning in details for multi-axial loading conditions and how different loading permutations can lead to different micro-mechanistic effects. The total-strain method of strain-range partitioning (SRP) is described, which is a methodology that sees use in several industries.
Book

Guide to Friction, Wear, and Erosion Testing

2007-01-01
No other book provides the details of how to conduct tribotests, including their implications, how to avoid pitfalls, and which are most useful. This manual describes the many manifestations of friction wear and erosion and suggests specific tests that can be used to address problems. It gives guidance in determining if bench tests are appropriate for a problem and if so, which ones should be considered. Manual 56 is an excellent resource for newcomers to tribology and a useful reference for practicing tribologists.
Standard

Ice, Rain, Fog, and Frost Protection

2004-06-22
HISTORICAL
AIR1168/4
This section presents the basic equations for computing ice protection requirements for nontransparent and transparent surfaces and for fog and frost protection of windshields. Simplified graphical presentations suitable for preliminary design, and a description of various types of ice, fog, frost, and rain protection systems are also presented.
Technical Paper

An Investigation of Fatigue in a Supersonic Transport Operating Environment

1970-02-01
700033
The effects of aircraft-loading parameters on the fatigue behavior of titanium alloy have been investigated for a schedule of stresses representing the flight-by-flight variation of stress at a point in the lower wing surface of a supersonic airplane. The effects on fatigue life of design mean stress, minimum stress for ground-air-ground cycles, taxi stress, thermal stress, elevated temperature, salt corrosion, and flight duration were investigated. Of the loading parameters studied, the design mean stress and the minimum stress for ground-air cycles had the greatest effects on fatigue life. Simulated taxiing and thermal stresses, elevated temperature, and salt corrosion had smaller effects on fatigue life. Fatigue lives at 550 F (560 K) were about half as long as at room temperature for most conditions investigated. The effect of the difference in flight duration on fatigue life was less than a factor of 2.
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