Keyword: Aluminum alloys

Articles: Defense

Enhanced performance operating envelopes for aerospace platforms continue to challenge industry limits. Aerospace platform operators demand extreme performance in harsh environments...

Briefs: Materials

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

Technology Update: Defense

Metal laser melting has made a successful leap from rapid prototyping to an approved manufacturing technology, and the method is increasingly...

Articles: Test & Measurement

Aerospace and defense platforms are often regarded as the earliest adopters of new materials and processes technologies. Materials test programs provide validations of...

Articles: Materials

Faster, lighter, stronger, hotter – words anyone working on military product development is all too used to hearing. In a world where advanced computer modeling and simulation packages are...

Briefs: Materials

Corrosion is a deforming process that costs the United States Department of Defense (DOD) approximately $23 billion annually and accounts for 23% of all DOD maintenance. Exhaustive...

Briefs: Physical Sciences

This project endeavors to develop, validate, and calibrate cost-effective field test equipment for measuring tire characteristics on vehicles while driving off-road. The four wheel force transducers...

Briefs: Mechanical & Fluid Systems
Thermal Analysis and Microhardness Mapping in Hybrid Laser Welds in a Structural Steel

The concept of combining a laser welding system with a conventional arc welding system (GTAW) was first proposed in order to improve the stability of the laser welding system and to allow greater flexibility in part fit-up. Prior research stated that using a...

Application Briefs: Defense

The desire to get home safely dwells in the back of the mind of every soldier. The battlefield provides enough mortal dangers without soldiers having to wonder whether or not the weapons they carry could...

Articles: Electronics & Computers

The theaters of operation for marine, air and land vehicles continue to redefine the term “rugged environment.” No longer bound by on-board human operators, autonomous and unmanned military vehicles are now...

Briefs: Manufacturing & Prototyping

In applications where product performance is mission critical, commercial, military, and aerospace companies require technology to manufacture deep- drawn cylindrical product...

Briefs: Electronics & Computers

The electromechanical, RF, and charging properties of an "air-gap" capacitive switch enable it to be utilized in high-cycle life testing. Monitoring both high-speed and low-speed switching...

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: Information Technology

Progress has been made in research on several fronts in an effort to develop computational simulation capabilities for use in virtual design and testing of advanced structural materials. It...

Briefs: Materials

AFRL scientists are studying a unique metal joining process— friction stir welding (FSW)—for building major structural assemblies. FSW is a solid-state welding process that forces a spinning...

Briefs: Materials

AFRL researchers developed a super-high-strength aluminum alloy that engineers can use to improve the capability and performance of aerospace components—cryogenic rocket engine components, in particular....