scholarly journals Development of a Conductive Polymer Based Novel 1-DOF Tactile Sensor with Cylindrical Arch Spring Structure Using 3D Printing Technology

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 318 ◽  
Author(s):  
Peshan Sampath ◽  
Eranga De Silva ◽  
Lakshitha Sameera ◽  
Isuru Udayanga ◽  
Ranjith Amarasinghe ◽  
...  
Keyword(s):  
3D Printing ◽  
Conductive Polymer ◽  
Load Condition ◽  
Tactile Sensor ◽  
Maximum Load ◽  
Sensing Element ◽  
Element Analysis ◽  
Printing Technology ◽  
Critical Dimensions ◽  
3D Printing Technology

Under this research, a novel tactile sensor has been developed using a conductive polymer-based sensing element. The incorporated sensing element is manufactured by polymer press moulding, where the compound is based on silicone rubber and has enhancements by silica and carbon black, with Silane-69 as the coupling agent. Characteristics of the sensing element have been observed using its sensitivity and range, where its results pose an inherent nonlinearity of conductive polymers. For the force scaling purpose, a novel 3D printed cylindrical arch spring structure was developed for this highly customizable tactile sensor by adopting commonly available ABSplus material in 3D printing technology. By considering critical dimensions of the structure, finite element analysis was carried out to achieve nearly optimized results. A special electrical routing arrangement was also designed to reduce the routing complexities. The optimized structure was fabricated using the 3D printing technology. A microcontroller-based signal conditioning circuit was introduced to the system for the purpose of acquiring data. The sensor has been tested up to the maximum load condition using a force indenter. This sensor has a maximum applicable range of 90 N with a maximum structural deflection of 4 mm. The sensor assembly weighs 155 g and the outer dimensions are 85 mm in diameter and 83 mm in height.

scholarly journals Theoretical and Experimental Study of the Vibration Dynamics of a 3D-Printed Sandwich Beam With an Hourglass Lattice Truss Core

2021 ◽  
Vol 7 ◽  
Author(s):  
Zhenkun Guo ◽  
Guobiao Hu ◽  
Jingchao Jiang ◽  
Liuding Yu ◽  
Xin Li ◽  
...  
Keyword(s):  
Theoretical Model ◽  
3D Printing ◽  
Passive Control ◽  
Sandwich Beam ◽  
Control Technique ◽  
Sandwich Beams ◽  
Element Analysis ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Truss Core

3D printing (also known as additive manufacturing) has been developed for more than 30 years. The applications of 3D printing have been increasingly extended to a variety of engineering fields in recent years. The sandwich material with a high strength and overall low density is a kind of artificial material that has been extensively used in various industrial and daily life applications. This paper presents a comprehensive vibration analysis and passive control technique for a cantilevered sandwich beam with an hourglass lattice truss core fabricated with 3D printing technology. The governing equation of the beam is established by using a homogenized model and the Hamilton's principle, from which the natural frequencies are determined. The theoretical model is verified by the results from the existing literature and the finite element analysis. The frequency response of the sandwich beam measured experimentally further validates the proposed model. Subsequently, a non-linear energy sink (NES) is proposed for being employed to passively suppress the vibration of the sandwich beam. A parametric study based on the theoretical model confirms the viability of using NES to effectively control the vibration of the sandwich beam. This work presents a good demonstration of using 3D printing technology for fabricating sandwich beams with a complicated lattice core. More importantly, some guidelines regarding the dynamic analysis of sandwich beams are provided. In addition, the analytical method presented in this work provides a potential means to theoretically explore the advantages of using sandwich beams for energy harvesting in the future.

scholarly journals A prototype of 3D-printed permanent magnet generator for low power applications

2022 ◽  
Vol 25 (1) ◽  
pp. 98
Author(s):  
Chaiyong Soemphol ◽  
Adisorn Nuan-on ◽  
Peeradapath Parametpisit
Keyword(s):  
3D Printing ◽  
Permanent Magnet ◽  
Output Voltage ◽  
Load Condition ◽  
Electrical Machine ◽  
Printing Technology ◽  
3D Printing Technology ◽  
3D Printed ◽  
Neodymium Magnets ◽  
Permanent Magnet Generator

Recently, there has been a growing interest in the field of using 3D-printing technology for electrical machine manufacturing. However, almost research works have been done majorly on the 3D-printing technology of individual working parts for various electrical machines. This research presents a study of design, fabrication and testing of the protopype of permanent magnet generator using 3D-printing technology. The major parts of proposed generator are fabricated though 3D-printed materials. The stator winding of designed generator consists of 12 slots. The stator coil is designed to have 250 turns per slot and 12 pieces of neodymium magnets are used in to generate magnetic field in the rotor core. The prototype generator is tested under different condition; no-load and loaded-test. The experimental have been shown that in the no-load condition, this generator is able to generate output voltage of 3.3-64.5 V, when rotated at speed of 100-2,500 rpm. In the loaded-test, the output voltage and output current are also generated. Furthermore, it can be seen that a proposed generator can generate the output power of 4,245.28 mW, when rotated at speed of 2,500 rpm.

Capability of 3D Printing Technology in Producing Molar Teeth Prototype

2020 ◽  
Vol 8 (2) ◽  
pp. 64
Author(s):  
Mohd Nazri Ahmad ◽  
Ahmad Afiq Tarmeze ◽  
Amir Hamzah Abdul Rasib
Keyword(s):  
3D Printing ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Molar Teeth

Accuracy of Geometry of Plastic Gear Produced with 3D Printing Technology

2020 ◽  
Vol 14 (7) ◽  
pp. 470
Author(s):  
Jarosław Kotliński ◽  
Karol Osowski ◽  
Zbigniew Kęsy ◽  
Andrzej Kęsy
Keyword(s):  
3D Printing ◽  
Printing Technology ◽  
3D Printing Technology

Rational Design of a High Performance and Robust Solar Evaporator via 3D‐Printing Technology

2021 ◽  
pp. 2102649
Author(s):  
Sourav Chaule ◽  
Jongha Hwang ◽  
Seong‐Ji Ha ◽  
Jihun Kang ◽  
Jong‐Chul Yoon ◽  
...  
Keyword(s):  
3D Printing ◽  
High Performance ◽  
Rational Design ◽  
Printing Technology ◽  
3D Printing Technology
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