• 대한정형외과학회지
• /
• 제53권6호
• /
• pp.466-477
• /
• 2018

정형외과는 인체의 모든 근골격계를 담당하기 때문에 3차원(3-dimensional, 3D) 프린팅 기술을 가장 많이 활용할 수 있는 분야이다. 구체적으로 관절염, 척추, 외상, 기형, 종양 등의 다양한 정형외과 질병에 대해 해부학적 모델, 수술용 가이드, 금속 임플란트, 바이오-세라믹 재건, 보조기 등의 형태로 활용될 수 있다. 특히 정형외과 종양 영역은 환자마다 종양의 발생 위치와 크기가 다양한 데 반하여 사지 보존 수술에 활용할 수 있는 기존의 수술 방법이 제한적이었기 때문에 3D 프린팅 기술의 활용이 매우 절실한 분야였다. 최근에 3D 프린팅 환자 맞춤형 임플란트를 짧은 시간 내에 쉽게 제작할 수 있게 되면서 기존 방법으로 골 재건이 어려웠던 부위에 대해서도 해부학적 재건이 가능하게 되었다. 3D 프린팅 기술을 의료 영역에서 더욱 폭넓게 사용하기 위해서는 디자인, 출력, 검증 과정에 필요한 많은 전문가들과 함께 수평적 위치에서 긴밀히 협력해야 한다. 의료계에서 3D 프린팅을 활용을 선도함으로써 다른 분야의 전문가 양성 및 3D 프린팅 관련 산업의 발달을 촉진시킬 수 있다고 판단한 정부도 규제보다는 활성화에 역점을 두고 적극적으로 지원하고 있는 추세이다. 앞으로 정형외과가 전체 의료계에서 3D 프린팅 기술의 도입과 활용을 선도해 가기를 기대하면서 골종양 수술에서 3D 프린팅 기술을 활용하였던 저자의 경험을 소개하고자 한다.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2022년도 봄 학술논문 발표대회
• /
• pp.65-66
• /
• 2022

In the construction industry, interest in technologies such as 3D Construction Printing (3DCP) is increasing, and research is being conducted continuously. In the case of atypical architecture, different shapes must be implemented, and the introduction of 3D printing technology is intended to solve it. Our researchers are conducting research to produce Free-form Concrete Panel (FCP). It automatically manufactures the FCP's formwork without any error with the design shape. At this time, the concrete nozzle based on the 3D printing technology is developed and the concrete is precisely extruded into the manufactured form to prevent the deformation of the formwork that can occur due to the concrete load. Therefore, in this study, the requirements for the development of 3D printing concrete nozzles for FCP manufacturing are analyzed. Based on the analyzed requirements, the first nozzle was developed. Such equipment is easy to shorten construction period and cost reduction in the atypical construction field, and is expected to be utilized as basic 3D printing equipment.

• 한국자원공학회지
• /
• 제56권3호
• /
• pp.260-269
• /
• 2019

탄성파 축소모형 실험에서의 3D 프린팅 기술 활용에 관하여 파악하였으며, 국내에서 수행되고 있는 연구를 서술하였다. 먼저 3D 프린팅 기술을 적층 방식에 따라 7가지로 분류하여 설명하였다. 3D 프린팅 기술 활용을 파악하기 위하여 물리탐사 분야의 국내외 학술지에서 관련 연구를 검색하였고 관련 연구를 연도 및 3D 프린팅 적층 방식에 따라 종합적인 분석을 수행하였다. 분석 결과, 2010년대부터 연구가 수행되어 왔으며, 이는 3D 프린터의 상용화 시점과 비슷한 것을 확인할 수 있었다. 또한 논문의 87%가 material extrusion 적층 방식을 활용하였으며, 수행된 연구들은 특정 대학에 집중되어 수행되었다. 본 연구 내용을 활용한다면 탄성파 축소모형 실험 분야에서 3D 프린팅 기술 활용에 대한 기초자료로 사용될 수 있을 것으로 생각된다.

• 한국의상디자인학회지
• /
• 제26권3호
• /
• pp.1-12
• /
• 2024

3D printing technology is a key technology of the Fourth Industrial Revolution and has been gaining attention in various fields, having been selected as one of the top 10 core manufacturing technologies by the U.S. government. In the apparel industry as well, there have been various attempts to develop products using 3D printers. However, compared to other industries and research fields, utilization remains insufficient. This is mainly due to the high price of large 3D printers and a limited varieties of filaments, making it difficult to implement traditional textiles and produce full-size garments. In this study, to develop 3D printed textiles, textile structures that can be 3D printed were categorized. Applying various types of filaments and layering methods allowed for the printing and evaluation of structures, ultimately leading to the selection of three types of 3D printed textile structures suitable for use as clothing materials. Subsequently, types of filaments were selected that match the chosen textile structures and suitabel designs were applied to develop 3D printed clothing designs. As a result of this study, an ideal form for 3D printing textiles was proposed and mehods were presented for clothing construction using practical (versatile) 3D printing technology. This study plays a significant role in contributing to the expansion of research areas related to 3D printing technology in the fashion field and suggesting effective research directions.

• 대한방사선기술학회지:방사선기술과학
• /
• 제45권5호
• /
• pp.423-431
• /
• 2022

The purpose of this study is to present objective information in applying 3D printing technology for PET/CT (Positron Emission Tomography/Computed Tomography) performance evaluation and use it as a basic research that can be applied to various purposes in the future. Phantoms were manufactured with step wedge of ABS(Acrylonitrile Butadiene Styrene) and ACR(Acrylic acid) material. The counts for each ROI(Region of Interest) were analyzed through image acquisition in PET/CT. And the variation rate of counts and CNR(Contrast Noise Ratio) was evaluated. In the counts analysis, the effect of thickness occurred. In addition, in the variation rate analysis, the thickness setting of steps wedge 4 to 5 levels should be considered first. These results minimize quantitative and qualitative changes in the phantom manufactured based on 3D printing, and enable more stable PET/CT performance evaluation. Based on 3D printing in PET/CT, various phantoms are expected to be produced in the future. If the characteristics of each material are considered and applied through the basic research such as this research, the result of the phantom manufactured through 3D printing can be more meaningful and will be used in a wide range.

• 벤처혁신연구
• /
• 제2권1호
• /
• pp.1-11
• /
• 2019

다양한 연구기관에서 4차 산업혁명을 이끌 핵심기술로 AI, IoT, Blockchain 등의 기술과 더불어 3D 프린팅 기술을 들고 있다. 3D 프린팅은 전통적인 생산방식인 subtractive manufacturing(SM)과는 대조적으로 additive manufacturing(AM)으로 그 영향력이 매우 커 혁명이라는 용어를 사용하기도 한다. 이에 본 연구에서는 3D 프린팅 산업의 특성을 경제 관점, 생산 관점, 마케팅 관점에서 전통적인 방식과 비교하여 분석하였다. 이후 비즈니스 생태계 구축 측면에서 쟁점을 분석하였다. 끝으로 향후 연구를 위한 아젠더를 제시하였다. 본 연구는 실무적으로는 3D 프린팅을 둘러싼 핵심적인 이슈 파악 및 향후 적용을 위한 단초를 제공하였다. 학문적으로는 기존의 연구 이슈에 대해 쟁점을 정리함으로써 향후 연구를 위한 틀을 제시하였다. 향후 연구에서는 이러한 논의를 토대로 실제 사례를 중심으로 실증적인 분석이 뒷받침될 필요가 있다.

• 대한치과의사협회지
• /
• 제56권9호
• /
• pp.479-490
• /
• 2018

3D printing technology supporting the specific patient medical services is actively being implemented in dentistry. The purpose of this study is to introduce the legal and institutional considerations to the medical practitioners in dentistry who must observe when they manufacture medical devices using 3D printers, and to provide a ways to activate and enhance their utilization in the domestic approval point of view for medical devices. Through the public data of government agencies and related organizations, the statutory system and compliance matters related to the manufacture of 3D printing medical devices have been examined and reviewed for the government's improvement efforts. Through the study, the government has been actively improving the system and making policy, but the active interest and participation of medical professionals and related workers are continually required to solve the problems which are scattered. 3D printing technology is expected to be more frequently utilized in the field of dentistry in near future. Therefore, it is essential to establish measures to improve the regulation through continuous cooperation with the related ministries with the long-term point of view enhancing smooth entry to the market for the medical devices by taking data from the continued research.

• 대한방사선기술학회지:방사선기술과학
• /
• 제44권4호
• /
• pp.343-350
• /
• 2021

3D printing technology is an additive manufacturing technology produced through 3D scanning or modeling method. This technology can be produced in a short time without mold, which has recently been applied in earnest in various fields. In the medical field, 3D printing technology is used in various fields of radiology and radiation therapy, but related research is insufficient in the field of nuclear medicine. In this study, we compare the characteristics of traditional nuclear medicine phantom with 3D printing technology and evaluate its applicability in clinical trials. We manufactured the same size phantom of poly methyl meta acrylate(PMMA) and acrylonitrile butadiene styrene(ABS) based on the aluminum step wedge. We used BrightView XCT(Philips Health Care, Cleveland, USA) SPECT/CT. We acquired 60 min list mode for Aluminum, PMMA and ABS phantoms using Rectangular Flood Phantom (Biodex, New York, USA) ^99mTcO₄ 3 mCi(111 MBq), 6 mCi (222MBq) and ⁵⁷Co Flood phantom(adq, New Hampshire, USA). For the analysis of acquired images, the region of interest(ROI) were drawn and evaluated step by step for each phantom. Depending on the type of radioisotope and radiation dose, the counts of the ABS phantom was similar to that of the PMMA phantom. And as the step thickness increased, the counts decreased linearly. When comparing the linear attenuation coefficient of Aluminum, PMMA and ABS phantom, the linear attenuation coefficient of the aluminium phantom was higher than that of the others, and the PMMA and ABS phantom had similar the linear attenuation coefficient. Based on ABS phantom manufactured by 3D printing technology, as the thickness of the PMMA phantom increased, the counts and linear attenuation coefficient decreased linearly. It has been confirmed that ABS phantom is applicable in the clinical field of nuclear medicine. If the calibration factor is applied through further research, it is believed that practical application will be possible.

• 대한의용생체공학회:의공학회지
• /
• 제43권2호
• /
• pp.116-123
• /
• 2022

This study analyzes the Mechanical properties of a medical bone plate by 3D printing. With the recent development of 3D printing technology, it is being applied in various fields. In particular, in the medical field, the use of 3D printing technology, which was limited to the existing orthosis and surgical simulation, has recently been used to replacement bones lost due to orthopedic implants using metal 3D printing. The field of application is increasing, such as replacement. However, due to the manufacturing characteristics of 3D printing, micro pores are generated inside the metal printing output, and it is necessary to reduce the pores and the loss of mechanical properties through post-processing such as heat treatment. Accordingly, the purpose of this study is to analyze the change in mechanical performance characteristics of medical metal plates manufactured by metal 3D printing under various conditions and to find efficient metal printing results. The specimen to be used in the experiment is a metal plate for trauma fixation applied to the human phalanx, and it was manufactured using the 'DMP Flex 100(3D Systems, USA), a metal 3D printer of DMLS (Direct Metal Laser Sintering) method. It was manufactured using the PBF(Powder Bed Fusion) method using Ti6Al4V ELI powder material.

• 한국기계가공학회지
• /
• 제18권11호
• /
• pp.96-102
• /
• 2019

Reverse engineering involves duplicating a physical part by measuring and analyzing its physical dimensions, features, and material properties. By combining reverse engineering with three-dimensional (3D) printing, engineers can simply fabricate and evaluate functional prototypes. This design methodology has been attracting increasing interest with the advent of the Fourth Industrial Revolution. In the present study, we apply reverse engineering and 3D printing technologies to evaluate a fabricated automotive inner ring prototype. Through 3D printing, inner rings of various densities were prepared. Their physical dimensions were measured with a 3D scanning system. Of our interest was the effect of inner ring density on the physical dimensions of the fabricated prototype. We compared the design dimensions and physical dimensions of the fabricated prototypes. The results revealed that even the 20% density of inner ring was effective for 3D printing in terms of satisfying the design requirements.