Invention Grant
- Patent Title: Method for manufacturing overhanging material by pulsed, voxel-wise buildup
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Application No.: US14852928Application Date: 2015-09-14
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Publication No.: US10046394B2Publication Date: 2018-08-14
- Inventor: Abdalla R. Nassar , Edward W. Reutzel
- Applicant: The Penn State Research Foundation
- Applicant Address: US PA University Park
- Assignee: The Penn State Research Foundation
- Current Assignee: The Penn State Research Foundation
- Current Assignee Address: US PA University Park
- Agency: McDermott Will & Emery LLP
- Main IPC: B22F3/105
- IPC: B22F3/105 ; B29C67/00 ; B33Y10/00 ; B33Y30/00 ; B33Y50/02

Abstract:
A method for manufacturing material voxel-by-voxel using directed-energy deposition is given. Using the method, unsupported structures, via voxel-wise directed-energy deposition, with steep overhangs is described and demonstrated. Methods for forming arbitrarily-complex structures and shaped voxels and surfaces are also given. A method for forming materials with internally-varying properties is also given. The method utilizes a pulsed or modulated, rather than continuous-wave energy source, thus allowing rapid solidification of voxels, rather than contours, hatches or tracks. Tuning of pulsing or modulation, material flow, and deposition-path parameters allows the buildup of unsupported material using standard directed-energy deposition processing heads and 3-axis stages, for example. The methods are demonstrated using a modified-directed-energy-deposition processes and is applicable to powder-bed for the buildup of three-dimensional components, repair and the addition of features to existing components.
Public/Granted literature
- US20160074937A1 METHOD FOR MANUFACTURING OVERHANGING MATERIAL BY PULSED, VOXEL-WISE BUILDUP Public/Granted day:2016-03-17
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