Publications

Displaying 51 - 55 of 55

Characterization of Feedstock in the Powder Bed Fusion Process: Sources of Variation in Particle Size Distribution and the Factors that Influence them

August 10, 2016

Author(s)

Justin G. Whiting, Jason Fox

Substantial efforts have been placed on characterizing and modeling additive manufacturing (AM) processes. The wide scope of work already done has focused on the effects of process parameters such as laser power, hatch spacing, scan speed and strategy, and

Design, Developments, and Results from the NIST Additive Manufacturing Metrology Testbed (AMMT)

August 10, 2016

Author(s)

Brandon M. Lane, Sergey Mekhontsev, Steven E. Grantham, Mihaela Vlasea, Justin G. Whiting, Ho Yeung, Jason C. Fox, Clarence J. Zarobila, Jorge E. Neira, Michael L. McGlauflin, Leonard M. Hanssen, Shawn P. Moylan, M A. Donmez, Joseph P. Rice

NIST is developing a facility titled the Additive Manufacturing Metrology Testbed that will enable advanced research into monitoring, controls, process development, and temperature measurement for laser powder bed fusion additive manufacturing and similar

Laser Path Planning and Power Control Strategies for Powder Bed Fusion Systems

August 9, 2016

Author(s)

Ho Yeung, Jorge Neira, Brandon Lane, Jason Fox, Felipe F. Lopez

In laser powder bed fusion additive manufacturing process, laser scan path, velocity, and power are some of the most important parameters affecting the build quality. Control strategies for laser path and power are implemented and tested on a prototype

PRELIMINARY STUDY TOWARD SURFACE TEXTURE AS A PROCESS SIGNATURE IN LASER POWDER BED FUSION ADDITIVE MANUFACTURING

June 29, 2016

Author(s)

Jason Fox, Shawn P. Moylan, Brandon Lane

Additive manufacturing (AM) allows for highly complex designs that cannot be achieved through subtractive or formative manufacturing techniques. A limiting factor of AM, however, is the as-built surface quality. Additionally, there is limited knowledge on

Effect of process parameters on the surface roughness of overhanging structures in laser powder bed fusion additive manufacturing

June 4, 2016

Author(s)

Jason Fox, Shawn P. Moylan, Brandon Lane

The development of additive manufacturing has allowed for increased flexibility and complexity of designs over formative and subtractive manufacturing. However, a limiting factor of additive manufacturing is the as-built surface quality as well as the

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