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https://orb.binghamton.edu
Recent documents in The Open Repository @ Binghamton (The ORB)en-usSat, 18 Jan 2020 02:09:55 PST3600Analysis of mechanical deformation eect on the voltage generation of a vertical contact mode triboelectric generator
https://orb.binghamton.edu/mechanical_fac/27
https://orb.binghamton.edu/mechanical_fac/27Thu, 16 Jan 2020 11:54:32 PST
One of the associated factors that controls the performance of a triboelectric generator (TEG) is the mechanical deformation of the dielectric layer. Therefore, a good contact model can be a prominent tool to find a more realistic and efficient way of determining the relationships between the contact and electrical output of the generator. In this study, experiments are conducted on a vertical contact mode triboelectric generator under an MTS machine. The open-circuit voltages are measured at different loads imposed by the MTS by controlling the cyclic displacement of the top tribo layer of the generator. A finite-element-based theoretical model is developed to explain the behavior of the generator during the experiments. The 2D-contact problem of the micro-structured tribo layers is simulated and then the contact results are integrated into 3D to find the actual contact area between the two surfaces. These numerical contact results improve the existing theoretical model by evaluating the correct surface charge density and contact area as a function of the input parameters. The excellent agreement between our experimental and theoretical results illustrates that theoretical modeling could be used as a robust approach to predict the mechanical and electrical performance of TEGs. In addition, some parametric studies of the harvester are presented here for different geometrical parameters of the microstructures.
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Nabid Aunjum Hossain et al.Sirari Rosewood (3,5), Torus Knot, Figure 3
https://orb.binghamton.edu/mathematical_sculptures/530
https://orb.binghamton.edu/mathematical_sculptures/530Wed, 15 Jan 2020 05:46:55 PST
On December 25, 2019, I completed a Sirari Rosewood (3,5) torus knot carving. It is 5.75" in diameter and 1.25" thick. Here is a pictureof an angled view.
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Alex J. FeingoldSirari Rosewood (3,5), Torus Knot, Figure 2
https://orb.binghamton.edu/mathematical_sculptures/529
https://orb.binghamton.edu/mathematical_sculptures/529Wed, 15 Jan 2020 05:46:53 PST
On December 25, 2019, I completed a Sirari Rosewood (3,5) torus knot carving. It is 5.75" in diameter and 1.25" thick. Here is a picture of one side.
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Alex J. FeingoldSirari Rosewood (3,5), Torus Knot, Figure 1
https://orb.binghamton.edu/mathematical_sculptures/528
https://orb.binghamton.edu/mathematical_sculptures/528Wed, 15 Jan 2020 05:46:50 PST
On December 25, 2019, I completed a Sirari Rosewood (3,5) torus knot carving. It is 5.75" in diameter and 1.25" thick. Here is a picture of one side.
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Alex J. FeingoldFigured Walnut (3,5), Torus Knot, Figure 3
https://orb.binghamton.edu/mathematical_sculptures/527
https://orb.binghamton.edu/mathematical_sculptures/527Wed, 15 Jan 2020 05:46:47 PST
On November 28, 2019, I completed a Figured Walnut (3,5) torus knot carving. It is 5.5" in diameter and 1.5" thick.
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Alex J. FeingoldFigured Walnut (3,5), Torus Knot, Figure 2
https://orb.binghamton.edu/mathematical_sculptures/526
https://orb.binghamton.edu/mathematical_sculptures/526Wed, 15 Jan 2020 05:46:45 PST
On November 28, 2019, I completed a Figured Walnut (3,5) torus knot carving. It is 5.5" in diameter and 1.5" thick.
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Alex J. FeingoldFigured Walnut (3,5), Torus Knot, Figure 1
https://orb.binghamton.edu/mathematical_sculptures/525
https://orb.binghamton.edu/mathematical_sculptures/525Wed, 15 Jan 2020 05:46:42 PST
On November 28, 2019, I completed a Figured Walnut (3,5) torus knot carving. It is 5.5" in diameter and 1.5" thick.
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Alex J. FeingoldBlack Mesquite (3,5), Torus Knot, Figure 1
https://orb.binghamton.edu/mathematical_sculptures/524
https://orb.binghamton.edu/mathematical_sculptures/524Wed, 15 Jan 2020 05:46:39 PST
On November 14, 2019, I completed another Black_Mesquite (3,5) torus knot carving.
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Alex J. FeingoldBlack Mesquite (3,5), Torus Knot, Figure 1
https://orb.binghamton.edu/mathematical_sculptures/523
https://orb.binghamton.edu/mathematical_sculptures/523Wed, 15 Jan 2020 05:46:37 PST
On November 14, 2019, I completed another Black_Mesquite (3,5) torus knot carving.
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Alex J. FeingoldBlack Mesquite (3,5), Torus Knot, Figure 1
https://orb.binghamton.edu/mathematical_sculptures/522
https://orb.binghamton.edu/mathematical_sculptures/522Wed, 15 Jan 2020 05:46:34 PST
On November 14, 2019, I completed another Black_Mesquite (3,5) torus knot carving.
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Alex J. FeingoldBlack Mesquite Wood (3,5), Torus Knot, Figure 4
https://orb.binghamton.edu/mathematical_sculptures/521
https://orb.binghamton.edu/mathematical_sculptures/521Wed, 15 Jan 2020 05:46:32 PST
A (3,5) torus knot carved from a 1.25"x6"x6" block of Black Mesquite wood. The final carving is 1" thick and 5.5" in diameter. Here are pictures of the two sides and one from an angle of the completed carving, and one more picture of an earlier stage next to another piece of the same kind of wood at an even earlier stage.
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Alex J. FeingoldBlack Mesquite Wood (3,5), Torus Knot, Figure 3
https://orb.binghamton.edu/mathematical_sculptures/520
https://orb.binghamton.edu/mathematical_sculptures/520Wed, 15 Jan 2020 05:46:29 PST
A (3,5) torus knot carved from a 1.25"x6"x6" block of Black Mesquite wood. The final carving is 1" thick and 5.5" in diameter. Here are pictures of the two sides and one from an angle of the completed carving, and one more picture of an earlier stage next to another piece of the same kind of wood at an even earlier stage.
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Alex J. FeingoldBlack Mesquite Wood (3,5), Torus Knot, Figure 2
https://orb.binghamton.edu/mathematical_sculptures/519
https://orb.binghamton.edu/mathematical_sculptures/519Wed, 15 Jan 2020 05:46:26 PST
A (3,5) torus knot carved from a 1.25"x6"x6" block of Black Mesquite wood. The final carving is 1" thick and 5.5" in diameter. Here are pictures of the two sides and one from an angle of the completed carving, and one more picture of an earlier stage next to another piece of the same kind of wood at an even earlier stage.
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Alex J. FeingoldBlack Mesquite Wood (3,5), Torus Knot, Figure 1
https://orb.binghamton.edu/mathematical_sculptures/518
https://orb.binghamton.edu/mathematical_sculptures/518Wed, 15 Jan 2020 05:46:24 PST
A (3,5) torus knot carved from a 1.25"x6"x6" block of Black Mesquite wood. The final carving is 1" thick and 5.5" in diameter. Here are pictures of the two sides and one from an angle of the completed carving, and one more picture of an earlier stage next to another piece of the same kind of wood at an even earlier stage.
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Alex J. FeingoldSirari Rosewood (3,5), Torus Knot, Figure 3
https://orb.binghamton.edu/mathematical_sculptures/517
https://orb.binghamton.edu/mathematical_sculptures/517Wed, 15 Jan 2020 05:46:21 PST
A torus knot made of Sirari Rosewood, and is about 1.25" thick and 5.5" in diameter. These pictures show both sides and a view from an angle.
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Alex J. FeingoldSirari Rosewood (3,5), Torus Knot, Figure 2
https://orb.binghamton.edu/mathematical_sculptures/516
https://orb.binghamton.edu/mathematical_sculptures/516Wed, 15 Jan 2020 05:46:19 PST
A torus knot made of Sirari Rosewood, and is about 1.25" thick and 5.5" in diameter. These pictures show both sides and a view from an angle.
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Alex J. FeingoldSirari Rosewood (3,5), Torus Knot, Figure 1
https://orb.binghamton.edu/mathematical_sculptures/515
https://orb.binghamton.edu/mathematical_sculptures/515Wed, 15 Jan 2020 05:46:16 PST
A torus knot made of Sirari Rosewood, and is about 1.25" thick and 5.5" in diameter. These pictures show both sides and a view from an angle.
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Alex J. FeingoldFigured Walnut (3,5), Torus Knot, Figure 3
https://orb.binghamton.edu/mathematical_sculptures/514
https://orb.binghamton.edu/mathematical_sculptures/514Wed, 15 Jan 2020 05:46:13 PST
A picture of Figured Walnut, about 1.75" thick and 5.5" in diameter. These pictures show both sides and a view from an angle.
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Alex J. FeingoldFigured Walnut (3,5), Torus Knot, Figure 2
https://orb.binghamton.edu/mathematical_sculptures/513
https://orb.binghamton.edu/mathematical_sculptures/513Wed, 15 Jan 2020 05:46:11 PST
A picture of Figured Walnut, about 1.75" thick and 5.5" in diameter. These pictures show both sides and a view from an angle.
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Alex J. FeingoldFigured Walnut (3,5), Torus Knot, Figure 1
https://orb.binghamton.edu/mathematical_sculptures/512
https://orb.binghamton.edu/mathematical_sculptures/512Wed, 15 Jan 2020 05:46:08 PST
A picture of Figured Walnut, about 1.75" thick and 5.5" in diameter. These pictures show both sides and a view from an angle.
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Alex J. FeingoldPython 3-5 Torus Knot Pendant
https://orb.binghamton.edu/mathematical_sculptures/511
https://orb.binghamton.edu/mathematical_sculptures/511Wed, 15 Jan 2020 05:46:05 PST
A picture of my mathematical jewelry design ``Python 3-5 Torus Knot Pendant" 3D printed by Shapeways out of a new material, Dark Grey PA12 Glass Beads, received on April 30, 2019. This material is described by Shapeways as being a multijet fusion plastic made of 40% glass bead filled nylon 12 plastic with high stiffness and dimensional stability. The surface has an interesting texture.
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Alex J. FeingoldBlack Palm Wood (3,5), Torus Knot, Figure 4
https://orb.binghamton.edu/mathematical_sculptures/510
https://orb.binghamton.edu/mathematical_sculptures/510Wed, 15 Jan 2020 05:46:02 PST
A picture of a (3,5) torus knot made of black palm wood, completed on Feb. 3, 2019. It is about 3.75" in diameter and 1.5" high.
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Alex J. FeingoldBlack Palm Wood (3,5), Torus Knot, Figure 3
https://orb.binghamton.edu/mathematical_sculptures/509
https://orb.binghamton.edu/mathematical_sculptures/509Wed, 15 Jan 2020 05:46:00 PST
A picture of a (3,5) torus knot made of black palm wood, completed on Feb. 3, 2019. It is about 3.75" in diameter and 1.5" high.
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Alex J. FeingoldBlack Palm Wood (3,5), Torus Knot, Figure 2
https://orb.binghamton.edu/mathematical_sculptures/508
https://orb.binghamton.edu/mathematical_sculptures/508Wed, 15 Jan 2020 05:45:57 PST
A picture of a (3,5) torus knot made of black palm wood, completed on Feb. 3, 2019. It is about 3.75" in diameter and 1.5" high.
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Alex J. FeingoldBlack Palm Wood (3,5), Torus Knot, Figure 1
https://orb.binghamton.edu/mathematical_sculptures/507
https://orb.binghamton.edu/mathematical_sculptures/507Wed, 15 Jan 2020 05:45:54 PST
A picture of a (3,5) torus knot made of black palm wood, completed on Feb. 3, 2019. It is about 3.75" in diameter and 1.5" high.
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Alex J. Feingold