نتایج جستجو برای: ultrasonic additive manufacturing

تعداد نتایج: 171459  

Journal: :Applied sciences 2022

The article presents the results of ultrasonic testing Ti6Al4V material produced by conventional method and laser bed fusion method. Modern manufacturing techniques, such as additive manufacturing, allow production parts with complex shapes. It is important to control condition components throughout their lifetime. purpose this was determine basic acoustic properties two different methods—bar d...

Journal: :Metals 2021

Ultrasonic testing (UT) has been actively studied to evaluate the porosity of additively manufactured parts. Currently, ultrasonic measurements as-deposited parts with a rough surface remain problematic because lowers signal-to-noise ratio (SNR) signals, which degrades UT performance. In this study, various deep learning (DL) techniques that can effectively extract features defects, even from s...

2015
MASSACHU SETT Michael Stern

Rapid Prototyping has transitioned from only being able to produce delicate prototypes to being capable of producing robust production parts. As part of this transition, it has been renamed Additive Manufacturing (AM). As a true manufacturing technology, it has become important to deliberately design parts for Additive Manufacturing, and research has begun in how best to achieve this. This thes...

2013
Xuan Song Yayue Pan Yong Chen Daniel J. Epstein

Most additive manufacturing (AM) processes are layer-based with three linear motions in the X, Y and Z axes. However, there are drawbacks associated with such limited motions, e.g. non-conformal material properties, stair-stepping effect, and limitations on building-around-inserts. Such drawbacks will limit additive manufacturing to be used in more general applications. To enable 6-axis motions...

2014
Marco Wirth Frédéric Thiesse

The technology of additive manufacturing – also known as ‘3D printing’ – holds the potential for revolutionising industrial production at all levels. Although the underlying techniques to build up physical items layer by layer from digital 3D design models have been in use since as early as 1986, only big companies could afford the necessary knowledge and equipment. Since 2008, things have chan...

2015
Donatella CERNIGLIA

Friction stir welding (FSW) is an innovative process that has been successfully used in joining aluminum alloys, normally difficult to weld. Important advantages over fusion welding are better retention of baseline material properties, lower residual stresses and excellent mechanical properties. Defects that occur in FSW joints are due to improper tooling or setup. Non-destructive techniques us...

2014
JA Slotwinski EJ Garboczi PE Stutzman CF Ferraris SS Watson MA Peltz

Additive manufacturing (AM) techniques can produce complex, high-value metal parts, with potential applications as critical parts, such as those found in aerospace components. The production of AM parts with consistent and predictable properties requires input materials (e.g., metal powders) with known and repeatable characteristics, which in turn requires standardized measurement methods for p...

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