Rapid prototyping eddy current sensors using 3D printing
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Purpose The purpose of this paper is to investigate the process of rapid prototyping eddy current sensors using 3D printing technology. Making full use of the advantages of 3D printing, the authors study on a new method for fabrication of an eddy current sensor. Design/methodology/approach In this paper, the authors establish a 3D model using SolidWorks. And the eddy current sensor is printed by the fused deposition modeling method. Findings Measurement results show that the 3D printing eddy current sensor has a wider linear measurement range and better linearity than the traditional manufacturing sensor. Compared to traditional eddy current sensor fabrication method, this 3D printed sensor can be fabricated at a lower cost, and the fabrication process is more convenient and faster. Practical implications This demonstrated 3D printing process can be applied to the 3D printing of sensors of more sophisticated structures that are difficult to fabricate using conventional techniques. Originality/value In this work, the process of rapid prototyping eddy current sensors using 3D printing is presented. Sensors fabricated with the 3D printing possess lots of merits than traditional manufactures. 3D printed sensors can be customized according to the configuration of the overall system, thus reducing the demand of sensor's rigid mounting interfaces. The 3D printing also reduce design costs as well as shortens the development cycle. This allows for quick translation of a design from concept to a useful device.Keywords:
Rapid Prototyping
Fused Deposition Modeling
Eddy-current sensor
Screen printing
3d printed
Fused Deposition Modeling (FDM) is an Additive Manufacturing technology where a heated plastic filament will be placed on the bedplate layer by layer until the 3D object is printed. The mechanical properties of the ABS FDM 3D-printed parts are not yet determined or estimated prior printing. Hence, the goal of this study is to identify the optimum 3D printing parameters based on the tensile properties of ABS FDM 3D-printed polymer parts. Taguchi approach and Range Analysis were used in finding the optimum 3D printing parameters in which different parameters were considered to meet the requirements of the orthogonal arrays. Five pieces of 3D-printed dumbbell-shaped tensile specimen were prepared for each parameter. The tests followed the ASTM D638-14 standard. The result for the optimum 3D printing configuration of ABS FDM 3D-printed material were concluded as the values with the highest tensile strength.
Fused Deposition Modeling
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Fused filament fabrication
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Fused Deposition Modeling
Acrylonitrile butadiene styrene
3d printed
Polylactic Acid
Infill
Tensile testing
Universal testing machine
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3d printed
Fused Deposition Modeling
Polycarbonate
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本論文は,熱溶解積層方式3Dプリンタによる「たんぽぽの綿毛」の作品制作を題材として,3Dモデルに依存しない造形パスのデザインや3Dプリンタを用いた作品制作について報告するものである.熱溶解積層方式を用いた毛の造形の先行研究を調査するとともに,従来の造形手法では困難であった綿毛の形状や接触回避,安定した造形と量産を実現した.これら課題の解決方法について,具体的な制作過程とともにまとめる.制作と展示の結果を踏まえて,3Dプリンタの扱い方やその可能性,3Dプリンタを用いた作品制作について議論する.
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Fused Deposition Modeling
3d model
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Abstract In a century where additive manufacturing (AM), specifically 3D printing, is significantly more than a prototyping technique, there is a gap in understanding how to enhance the quality and strength of 3D printed parts. Material characterization techniques in solid mechanics are well-established. However, there is still a need to develop a material characterization regimen for 3D-printed parts from different techniques, such as fused deposition modeling (FDM) or stereolithography (SLA). In this study, we perform a comprehensive benchmarking study comparing the quality and strength of prints using FDM and SLA for a given wall thickness, infill percentage, and overhang angle. The dogbone samples printed in each configuration are tested under tensile testing to measure their rupture strength. The same polymers formed as thin films are studied at the micro-scale using atomic force microscope (AFM) measurements. The results of this study will provide a detailed guideline for both general and technical users of FDM and SLA 3D printers to optimize printing time and material strength and quality for the given condition.
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Additive manufacturing (AM) has acquired an increasing interest from industrial, academic, and research fields in the last few decades. One of the AM techniques that is overgrowing and gripping more attention is Fused Deposition Modeling (FDM). 3D printed parts with FDM are being considered in replacing traditionally manufactured parts made with traditional materials. Hence, comes the need for understanding the mechanical behavior of printed parts to evaluate its eligibility for any given application. However, knowledge established is lacking information about 3D printing materials mechanical properties. From here comes the aim of this paper, which is to investigate the compression properties of PLA 3D printed samples. Furthermore, to examine the consistency of mechanical behavior over duplicated 3D printed samples. Specimens would be 3D printed by the FDM technique under the same 3D print conditions to minimize and -or if possible- eliminate the impact of unwanted factors on compressive properties of the material.
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The main purpose of this study was to determine the reproducibility and accuracy of a three-dimensional (3D) bone model printed on a desktop 3D-printer based on fused deposition modelling (FDM) technology with polylactic acid (PLA) and the effect of autoclave sterilization on the printed models. Computed tomographic images of the tibia were obtained from 10 feline cadavers, used to create a bone surface-rendering file and sent to the 3D printing software. Right and left tibias were each printed five times with the FDM desktop 3D printer using PLA plastic material. Plastic models and cadaveric bones were measured with a profile projector device at six predetermined landmarks. Plastic bones were then sterilized using an autoclave before being re-measured applying the same method. Analyses of printed model size reliability were conducted using intra-class correlation coefficients (ICC) and Bland-Altman plots. The ICC always showed an almost perfect agreement when comparing 3D-printed models issued from the same cadaveric bone. The ICC showed moderate agreement for one measurement and strong/perfect agreement for others when comparing a cadaveric bone with the corresponding 3D model. Concerning the comparison of the same 3D-printed model, before and after sterilization, ICC showed either strong or perfect agreement. Rapid-prototyping with our FDM desktop 3D-printer using PLA was an accurate, a reproducible and a sterilization-compliant way to obtain 3D plastic models.
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Fused Deposition Modeling
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Abstract The authors focus on the Fused Deposition Modeling (FDM) 3D printer because the FDM 3D printer can print the utility resin material. It can print with low cost and therefore it is the most suitable for home 3D printer. The FDM 3D printer has the problem that it produces layer grooves on the surface of the 3D printed structure. Therefore the authors developed the 3D-Chemical Melting Finishing (3D-CMF) for removing layer grooves. In this method, a pen-style device is filled with a chemical able to dissolve the materials used for building 3D printed structures. By controlling the behavior of this pen-style device, the convex parts of layer grooves on the surface of the 3D printed structure are dissolved, which, in turn, fills the concave parts. In this study it proves the superiority of the 3D-CMF than conventional processing for the 3D printed structure. It proves utilizing the evaluation of the safety, selectively and stability. It confirms the improving of the 3D-CMF and it is confirmed utilizing the data of the surface roughness precision and the observation of the internal state and the evaluation of the mechanical characteristics.
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3D프린터를 활용한 맞춤형 재활 기기를 제작하기 위해서 3D 프린팅으로 제작된 부품의 약한 기계적 강도와 내부 결함을 확인하기 어렵다는 점이 있다. 본 논문에서는 Poly Lactic Acid(PLA) 필라멘트를 이용하여 Fused Deposition Manufacturing(FDM) 3D프린터 출력 시 출력 온도와 출력속도, 적층 각도에 따른 기계적 강도에 미치는 영향을 인장실험을 통하여 알아보고 어닐링 방법을 통하여 기계적 강도 향상과 내부결함 판단법을 제안하고자 한다. 최적 출력 방법과 플라스틱 사출에서 주로 사용하는 어닐링 기법을 FDM 3D프린터에 적용하였고, 최적 어닐링 온도와 효과를 제안하였다. 이를 통해 맞춤형 재활 기기 제작 시 기계적 강도에 대한 이슈를 해결하고자 한다. 본 논문에서 제안하는 출력 조건은 온도 220℃ 출력 시 형상 오차가 적고 강도가 강했으며 어닐링 시 23%가 증가하였으며, 출력속도 10mm/s 시편의 강도가 가장 강했으며 어닐링 시 강도가 33% 증가하여 가장 효과가 크게 나타났다. 어닐링 온도로는 유리 전이온도 부근인 60℃에서는 모든 시편이 인장강도가 증가했으나, 결정화 온도근방인 105℃에서는 구조적 결함이 존재하는 출력물은 시편이 비틀림, 들뜸 현상에 의한 인장강도의 약화 현상이 발견되었다. 이러한 결과는 맞춤형 재활 기기 제작에서 높은 기계적 강도와 내부결함파악이 중요시 요구되는 부위에 제작되면 효과적으로 이용될 것이다.
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3d printer
Three dimensional printing
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Additive manufacturing (AM) has been introduced for production of prototypes, but it has been recently used for fabrication of end-use products. Therefore, the mechanical strength and structural integrity of 3D-printed parts have become of significant importance. AM also known as three-dimensional (3D) printing, has been considered as a revolutionary manufacturing process that can create geometrically complex parts through a digital model. In the current study, we investigate effects of printing parameters on the fracture toughness of 3D-printed polymer parts. To this aim, polylactic acid (PLA) material was used to fabricate specimens based on the fused deposition modeling process. The specimens were printed with different orientations at different printing speeds. Particularly, the specimens were printed with 45°/-45° and 0°/90° filament orientations at printing speed of 20 mm/s and 80 mm/s. A series of compact tension tests was conducted and linear elastic fracture mechanics approach was used to determine the fracture toughness values for each group of specimen. The experimental results indicate that the lowest fracture load was belong to the specimens printed at the highest speed. The reported results of this study can be used for future design and next computational modeling of 3D-printed PLA parts.
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Polylactic Acid
Fused filament fabrication
Tension (geology)
Three dimensional printing
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