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Search Publications by: M Alkan Donmez (Fed)

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Displaying 51 - 75 of 122

Thermographic and FE Simulation of the DMLS Process at NIST

February 4, 2015
Author(s)
Brandon M. Lane, Li Ma, Shawn P. Moylan, M A. Donmez, Eric P. Whitenton, Daniel J. Falvey
A major effort of the Measurement Science for Additive Manufacturing Program at NIST is to provide high quality, well-defined temperature measurement of the DMLS process to support and validate multi-physics simulations. However, the dynamic, complex

An Additive Manufacturing Test Artifact

October 23, 2014
Author(s)
Shawn P. Moylan, John A. Slotwinski, A L. Cooke, Kevin K. Jurrens, M A. Donmez
We propose a test artifact, intended for standardization, for the purpose of evaluating the performance of additive manufacturing (AM) systems. A thorough analysis of previously proposed AM test artifacts as well as experience with machining test artifacts

Standards Related to Prognostics and Health Management (PHM) for Manufacturing

July 7, 2014
Author(s)
Gregory W. Vogl, Brian A. Weiss, M A. Donmez
Prognostics and health management (PHM) systems are utilized to reduce burdensome maintenance tasks of monitored products or processes through diagnostics and prognostics, which provide actionable information that support decision-making for improved

Powder Bed Fusion Machine Performance Testing

April 16, 2014
Author(s)
Shawn P. Moylan, Joseph Drescher, M A. Donmez
Unlike conventional machining where there is a near 1:1 correspondence of machine performance to the geometry of the workpiece, the accuracy of the machine components is only one of the contributors to the quality of a finished AM part. Rather, there is

Lessons Learned in Establishing the NIST Metal Additive Manufacturing Laboratory

June 21, 2013
Author(s)
Shawn P. Moylan, John A. Slotwinski, April Cooke, Kevin K. Jurrens, M A. Donmez
This publication presents a summary of lessons learned by NIST staff during establishment of the NIST Metal Additive Manufacturing Laboratory and implementation of the metal additive manufacturing capability at NIST. These lessons learned resulted from the

A VIRTUAL MACHINE TOOL FOR THE EVALUATION OF STANDARDIZED 5-AXIS PERFORMANCE TESTS

October 26, 2012
Author(s)
Ronnie R. Fesperman Jr., Shawn P. Moylan, M A. Donmez
Standards committees are actively working to develop standard test methods for the performance evaluation of 5-axis machining centers through the direct and indirect measurement of simultaneous motions of all five axes [1-2]. However, the compound effect

Proposal for a standardized test artifact for additive manufacturing machines and processes

August 15, 2012
Author(s)
Shawn P. Moylan, John A. Slotwinski, April L. Cooke, Kevin K. Jurrens, M A. Donmez
Historically, standardized test parts are used to quantitatively evaluate the performance of a machine or process. While several different additive manufacturing (AM) test parts have been developed in the past, there are no current standard test parts. We

A Review of Test Artifacts for Additive Manufacturing

May 24, 2012
Author(s)
Shawn P. Moylan, April L. Cooke, Kevin K. Jurrens, John A. Slotwinski, M A. Donmez
A standardized test part can be used to quantitatively evaluate the performance of a machine or process. This document reviews existing test artifacts used to characterize additive processes that are reported in the literature. Several aspects of the test

Evaluation of Proposed Test Artifacts for Five-Axis Machine Tools

November 18, 2011
Author(s)
Shawn P. Moylan, David Blumenfeld, Michael L. McGlauflin, Ronnie R. Fesperman Jr., M A. Donmez
Machining of a test artifact is an attractive method of evaluating the performance of a machine tool because the tests are often quick and do not require special instrumentation. An appropriate artifact should be complex enough to assess a machine's
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