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Joshua A. Tarbutton
University of North Carolina at Charlotte
44Publications
8H-index
195Citations
Publications 43
Newest
#1ChaBum Lee (A&M: Texas A&M University)H-Index: 11
#2Joshua A. Tarbutton (UNCC: University of North Carolina at Charlotte)H-Index: 8
This paper represents a polymeric piezoelectric manufacturing process for sensing and actuation applications. The electric poling-assisted additive manufacturing (EPAM) process combining additive manufacturing (AM) with polymeric poling process has been recently introduced. This process keeps piezoelectric polymer dipoles well-aligned and uniform over a large area in a single-step direct printing process. Here, the EPAM process was employed to directly print polyvinylidene fluoride (PVDF) polyme...
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#1Travis W. Knight (USC: University of South Carolina)H-Index: 9
#2Tanvir Farouk (USC: University of South Carolina)H-Index: 18
Last.Joshua A. Tarbutton (UNCC: University of North Carolina at Charlotte)H-Index: 8
view all 6 authors...
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#1Fei Shen (UNCC: University of North Carolina at Charlotte)
#2Joshua A. Tarbutton (UNCC: University of North Carolina at Charlotte)H-Index: 8
Abstract This paper presents a novel automatic tool path planning approach which employs the scanned data as the stock. Using the scan data as the stock allows a new geometrical approach to measure the difference between the stock model and desired final geometry. This approach employs a voxel model as the underlying geometric representation, which enables an efficient parallel tool path planning algorithm based on a general-purpose graphics processing unit (GPGPU) approach. The approach is comp...
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#1Mohammadrafi Marandi (UNCC: University of North Carolina at Charlotte)
#2Joshua A. Tarbutton (UNCC: University of North Carolina at Charlotte)H-Index: 8
Abstract The sensitivity of piezoelectric PVDF sensors is directly related to the concertation and orientation of the polar phases. Previous efforts in obtaining oriented polar phases during 3D printing proved to be challenging. In this paper the superiority of the co-polymer PVDF-TrFE when compared to PVDF for 3D printing is demonstrated. In contrast to PVDF, PVDF-TrFE forms nearly pure β-phase in solidification from melt. The emergence of more β-phase than the non-polar α-phase is demonstrated...
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#1Omid Yousefian (NCSU: North Carolina State University)H-Index: 2
#2Andrey Balabokhin (USC: University of South Carolina)H-Index: 2
Last.Joshua A. Tarbutton (UNCC: University of North Carolina at Charlotte)H-Index: 8
view all 3 authors...
A new digital-based model is presented for the prediction of cutting forces in 3-axis CNC milling of surfaces. The model uses an algorithm to detect the work-piece/cutter intersection domain automatically for given cutter location, cutter and work-piece geometries. The algorithm uses a voxel-based representation for the workpiece and rasterized tool slice to detect the tool engagement. Furthermore, an analytical approach is used to calculate the cutting forces based on the discretized model. The...
1 CitationsSource
#1Dmytro Konobrytskyi (Uber )H-Index: 1
#2Mohammad M. Hossain (Georgia Institute of Technology)H-Index: 7
Last.Thomas R. Kurfess (Georgia Institute of Technology)H-Index: 20
view all 5 authors...
ABSTRACTWhile 5-axis CNC machines improve the manufacturing productivity, the tool-path programming demands human expertise and tremendous time investment to generate collision-free optimal tool trajectories. To address the challenge of multi-axis CNC programming, this work presents a new discrete volume based geometry representation that naturally enables highly parallel geometry processing. Then it formulates and discusses a methodology for tool path planning algorithms designed around the for...
3 CitationsSource
#1Ethan D. Burnham-Fay (UR: University of Rochester)H-Index: 2
#2Tue Le (USC: University of South Carolina)H-Index: 2
Last.Jonathan D. Ellis (UR: University of Rochester)H-Index: 9
view all 4 authors...
Abstract Polyvinyldene fluoride (PVDF) polymer piezoelectric actuators were manufactured using an electric poling-assisted additive manufacturing (EPAM) process and tested for actuation strain in the thickness direction. A heterodyne interferometer was used to measure the strain developed by the actuators as a function of applied voltage. Results were compared to a commercially available ceramic lead–zirconium–titanate (PZT) actuator. The EPAM PVDF samples exhibit strains up to 8.78 m ϵ , compar...
8 CitationsSource
#1Andrey Balabokhin (USC: University of South Carolina)H-Index: 2
#2Joshua A. Tarbutton (UNCC: University of North Carolina at Charlotte)H-Index: 8
Tool selection in milling operation is an important step that dramatically influence the milling time. This paper discusses a new method to select the best cutter for different zones of a free-form surface from the list of available generalized cutters. A digital, voxel-based model is used to represent the workpiece and the available tools. First, the finishing performance is calculated for every tool and for every cutter location point. Second, the tool with maximum performance is selected for ...
2 CitationsSource
#1Andrey Balabokhin (USC: University of South Carolina)H-Index: 2
#2Joshua A. Tarbutton (USC: University of South Carolina)H-Index: 8
Abstract In order to generate a tool path, scallop height should be under the given precision requirement and the tool path should be as short as possible. Iso-scallop tool path generation method is traditionally used to generate the effective tool path. This paper discussed a new method to generate a iso-scallop and contour-parallel tool path for a generalized cutter and an arbitrary area on free-form surface in 3-axis CNC milling. The milling surface, originally represented as a triangular mes...
2 CitationsSource
#1ChaBum Lee (Tennessee Technological University)H-Index: 11
#2Seongkyul Jeon (Tennessee Technological University)H-Index: 4
Last.Joshua A. Tarbutton (UNC: University of North Carolina at Chapel Hill)H-Index: 8
view all 5 authors...
Abstract We analyzed the parameter effects of an optical knife-edge sensor (OKES) and the measurement uncertainty to achieve high linearity, long range, and high accuracy for nanopositioning stage applications. The OKES utilizes interference fringes produced from diffraction across the knife-edge. The total field at the detector was calculated from superposition of the incident field and the diffracted field at the knife-edge, and the edge diffraction effects on the sensor design parameters (dis...
4 CitationsSource
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