William E. Frazier

TL;DR: The state-of-the-art of additive manufacturing (AM) can be classified into three categories: direct digital manufacturing, free-form fabrication, or 3D printing as discussed by the authors.

TL;DR: In this article, the effect of thermal exposure on the mechanical properties and electrical conductivity of aluminum alloys was evaluated at temperatures ranging from 180 °C (350 °F) to 230°C (450 °F).

TL;DR: In this paper, the effects of heat damage on aluminum alloys were simulated and the correlations existing between the static mechanical and electrical conductivity properties were determined. And the results indicated that at the temperatures below 260 °C (500 °F) all five alloys showed clear correlations between the mechanical and physical properties.

TL;DR: The U.S. Navy's certification and qualification process for materials and structures is undertaken to ensure the flight safety and full mission capability of naval aviation weapon systems as mentioned in this paper, where validated engineering data and concepts provide the foundation for continued technological development and innovation.

TL;DR: In this paper, the retrogression and reaging (RRA) heat-treatment process and recent developments in high-strength 7xxx series aluminum alloys are summarized in this article.