Latest Stories

Briefs
Propulsion

Fatigue Behavior of an Advanced Melt-Infiltrated SIC/SIC Composite with Environmental Barrier Coating at 1200°C in Air and in Steam

SiC fiber-reinforced SiC matrix composites are being evaluated for aircraft engine hot-section components.

Articles
Electronics & Computers

Pulse Plasma Nitriding for Aerospace Applications

Aerospace manufacturers who depend on nitriding components can benefit from greater uniformity of results, better-protected materials, and increased throughput.

Briefs
Materials

Sensing Applied Load and Damage Effects in Composites with Nondestructive Techniques

Determine the effects of applied load on a composite structure.

News
Electronics & Computers

EOS Releases Four New Metal Materials for Series Additive Manufacturing

Global provider of industrial additive manufacturing (AM) metals and polymers, EOS GmbH, has released four news metal AM materials for 3D-printing. EOS...

News
Power

Breakthroughs in 3D-Printing Give Way for Promising Textile Lithium Battery Technology

At the convergence of 3D-printing and lithium battery technology, Hong Kong researchers develop a promising textile-based, foldable battery that may...

Briefs
Aerospace

Stress-Corrosion Cracking and Corrosion Fatigue Impact of IZ-C17+Zinc-Nickel on 4340 Steel

The protection of cathodic metallic materials used for aircraft components, like 4340, Aermet 100, and PH 13-8 corrosion-resistant steel, is critical...

Briefs
Defense

Spectrum Fatigue of 7075-T651 Aluminum Alloy Under Overloading and Underloading

Most structural members and machine components are subjected in service to cyclic loadings of varying amplitude. The variation in stress level follows either a...

Articles
Aerospace

Solving the Power/Energy Paradox for High-Power Defense Applications

While often used interchangeably, power and energy are not the same. Energy is the capacity to perform and power is the rate at which that capacity is exercised — the...

Briefs
Materials

Thermo-Elastic Nondestructive Evaluation of Fatigue Damage in PMR-15 Resin

New aircraft are expected to use more composite materials. This drives the need for nondestructive evaluation (NDE) of composite materials. Current aircraft are flown...

Briefs
Test & Measurement

Characterization of Ceramic Composite Materials Using Terahertz Nondestructive Evaluation Techniques

This work describes the use of nondestructive evaluation (NDE) techniques to characterize defects such as rust, voids, etc. in materials,...

Application Briefs
Defense

Fastener Inserts

Fastener Inserts Designed for Lightweight Aerospace Materials Reduce Risks, Costs

Ongoing efforts to increase fuel efficiency, tactical mobility, and payload capacity in aerospace design have driven engineers to find...

Application Briefs
Software

SWORD Simulation Software

MASA Group, a developer of Artificial Intelligence (AI)- based Modeling & Simulation (M&S) software for the defense, public safety, emergency management, and serious games markets, has launched SWORD 5.0,...

Briefs
Test & Measurement

Thermal Mechanical Fatigue Crack Growth Testing

Turbines in aircraft turbojet engines are being subject to increasingly higher temperatures to improve fuel efficiency. High turbine efficiency requires the ability of turbine blades to...

Briefs
Physical Sciences

Fatigue Crack Detection Via Load-Differential Guided Wave Methods

Guided waves (e.g., Lamb waves) have been considered for many structural health monitoring (SHM) applications because of their ability to travel long distances and maintain...

Briefs
Electronics & Computers

Prognostic Health Management for Avionics System Power Supplies

Electronic systems such as electronic controls, onboard computers, communications, navigation, and radar perform many critical functions onboard military and commercial...

Application Briefs
Defense

Gas Turbine Exhaust Recovery Design Improves Propulsion Efficiency

In January, Concepts NREC (CN) was awarded a Phase I Small Business Innovative Research (SBIR) grant from the Navy to improve the power efficiency of its gas turbine prime...

Briefs
Physical Sciences

Studies of Dynamic Fracture in Brittle Materials

A program of research spanning several years ending in November 2005 was dedicated primarily to formulation and analysis of canonical boundary- value problems in mathematical modeling of dynamic fracture in brittle materials. The sub-topics within the broad topic of dynamic fracture in brittle...

Briefs
Physical Sciences

Some Advances in Understanding of Environmental Fatigue

A research program has yielded advances in understanding of numerous aspects of environmental crack propagation in aerospace aluminum alloys. From one perspective, the objective of this program was to quantitatively establish governing crack-tip-mechanics conditions and damage mechanisms...

Briefs
Physical Sciences

Cracking of Aluminum Panels Repaired With Composite Patches

An experimental study of the mechanical behavior of cracked aluminum specimens repaired with composite-material patches has yielded findings that may eventually contribute to the...

Briefs
Materials

Continuous Carbon Nanofibers for Structural Composites

A program of research has addressed key issues in the production of continuous carbon nanofibers and the utilization of carbon nanofibers as the reinforcing components in matrix/fiber...

Briefs
Materials

Ceramic Matrix Composites Research

AFRL scientists characterized and evaluated the high-temperature mechanical behavior of fiber-reinforced ceramic matrix composite (CMC) materials used in aerospace structural applications. Researchers...