Effect Of 3D Printing Research Articles

The effect of three-dimensional (3D) printing on quantitative and qualitative outcomes in paediatric orthopaedic osteotomies: a systematic review.

Three-dimensional (3D) printing technology is increasingly being utilized in various surgical specialities. In paediatric orthopaedics it has been applied in the pre-operative and intra-operative stages, allowing complex deformities to be replicated and patient-specific instrumentation to be used. This systematic review analyses the literature on the effect of 3D printing on paediatric orthopaedic osteotomy outcomes.A systematic review of several databases was conducted according to PRISMA guidelines. Studies evaluating the use of 3D printing technology in orthopaedic osteotomy procedures in children (aged ≤ 16 years) were included. Spinal and bone tumour surgery were excluded. Data extracted included demographics, disease pathology, target bone, type of technology, imaging modality used, qualitative/quantitative outcomes and follow-up. Articles were further categorized as either ‘pre-operative’ or ‘intra-operative’ applications of the technology.Twenty-two articles fitting the inclusion criteria were included. The reported studies included 212 patients. There were five articles of level of evidence 3 and 17 level 4.A large variety of outcomes were reported with the most commonly used being operating time, fluoroscopic exposure and intra-operative blood loss.A significant difference in operative time, fluoroscopic exposure, blood loss and angular correction was found in the ‘intra-operative’ application group. No significant difference was found in the ‘pre-operative’ category.Despite a relatively low evidence base pool of studies, our aggregate data demonstrate a benefit of 3D printing technology in various deformity correction applications, especially when used in the ‘intra-operative’ setting. Further research including paediatric-specific core outcomes is required to determine the potential benefit of this novel addition.Cite this article: EFORT Open Rev 2021;6:130-138. DOI: 10.1302/2058-5241.6.200092

Interventional Therapy for Cerebral Aneurysms Under the Guidance of 3D Printing Technology

Objective: To explore the clinical method and effect of 3D printing in the treatment of cerebral aneurysms. Methods: The authors research work on the hospital, work time in February 2019 - February 2020, this study selected patients of cerebral aneurysms, this period are selected for treatment of 100 cases of patients, randomly divided into two groups, a group to give simple intervention, named as the control group, another group for the interventional therapy under the guidance of 3 D printing, named as experimental group, analyze the effect of two groups of patients with clinical intervention. Results: The length of hospital stay in the experimental group was shorter than that in the control group. Meanwhile, the incidence of complications and adverse reactions in the experimental group and the control group were 6.00% and 18.00%, the experimental group was better(P<0.05). Conclusion: 3D printing technology can be applied in the treatment of patients with cerebral aneurysms to provide guidance for interventional surgical treatment. It has significant effect, can reduce the incidence of complications in patients, has significant clinical effect, and can be popularized.

Journal Vol – 15 No -7, July 2020 Journal > Journal > Journal Vol – 15 No -7, July 2020 > Page 6 PERFORMANCE AND EMISSION CHARACTERISTICS OF GASOLINE-ETHANOL BLENDS ON PFI-SI ENGINE Authors: D.Vinay Kumar ,G.Samhita Priyadarsini,V.Jagadeesh Babu,Y.Sai Varun Teja, DOI NO: https://doi.org/10.26782/jmcms.2020.07.00051 admin July 26, 2020 Abstract: Alcohol based fuels can be produced from renewable energy sources and

Journal Vol – 15 No -7, July 2020 Journal > Journal > Journal Vol – 15 No -7, July 2020 > Page 6 PERFORMANCE AND EMISSION CHARACTERISTICS OF GASOLINE-ETHANOL BLENDS ON PFI-SI ENGINE Authors: D.Vinay Kumar ,G.Samhita Priyadarsini,V.Jagadeesh Babu,Y.Sai Varun Teja, DOI NO: https://doi.org/10.26782/jmcms.2020.07.00051 admin July 26, 2020 Abstract: Alcohol based fuels can be produced from renewable energy sources and

Investigation of the influence of 3D printing modes with ceramics and sintering on the shrinkage process of thin-walled models

The subject of this study focuses on the effect of 3D printing and heat treatment of thin-walled models made of ceramic paste. The plates with dimensions of 20*5*40 mm were used as the models. The methodology includes the creation of ceramic objects using 3D printing by the SLA method (stereolithography) and their further heat treatment. The surface quality and the shrinkage percentage of samples printed in different modes and thermally processed under different conditions are compared. It was found that with a decrease in layer thickness and particle size, as well as an increase in the duration of heat treatment, the surface quality of the samples improves and the percentage of shrinkage decreases approximately 2 times. Using new modes and improved heat treatment conditions, samples with the least number of cracks and a lower percentage of shrinkage were obtained, which allows using this process to create ceramic products of higher quality. The method of creating ceramic products used in the work in the future can be applied in such industries as aircraft manufacturing, medicine, biotechnology and other fields.

Влияние 3D-печати на свойства порошков на основе полиамида

Новые технологии, Химическая промышленность, Химическая технология, Научные журналы, Защита от коррозии, Технология металлов, Свойства материалов, Технические журналы, Наука и технологии, Справочная литература, Научные разработки

The effect of 3D printing on the morphological and mechanical properties of polycaprolactone filament and scaffold

Three‐dimensional (3D) printing becomes an attractive technique to fabricate tissue engineering scaffolds through its high control on fabrication and repeatability using the printing parameters. This technique can be combined by the finite element method (FEM), and tissue‐specific scaffolds with desirable morphological and mechanical properties can be designed and manufactured. In this study, the influential 3D printing parameters on the morphological and mechanical properties of polycaprolactone (PCL) filament and scaffold were studied experimentally and numerically. First, the effects of printing parameters and process on the properties of extruded PCL filament were investigated. Then, using FEM, the effects of filament specifications on the overall characteristics of the scaffold were evaluated. Results showed that both the printing process in terms of resting time and remaining time and the printing parameters like pressure, printing speed, and printing path length have influenced the filament properties. In addition, both the filament diameter and elastic modulus had significant effects on the properties of scaffold especially, a 20% increase in the filament diameter caused the scaffold compressive elastic modulus to rise by around 72%. It is concluded that the printing parameters and process must be tuned very well in fabricating scaffolds with the desired morphology and mechanical property.

Effect of 3D printing on supply chain management

Abstract The recent revolution in the field of manufacturing is 3D printing or Additive Manufacturing (AM). Recently, AM technology is emerging as an eye opener for creating complex geometries with desired material and to improve the designing and modelling of implausible structures. It leads to the disruptive innovations that creates a global impact on the logistics of industries and the supply chain. The main competence of this technology is to fabricate the products closer to the expectations of customers around the world and to customize those products in real time. It has great advantages over supply chain management by the means of reduction in inventory, shipping costs and capital expenditures on factories and warehouses which provides the potential to evaluate the transformation of global supply chain management. The main objective of this review is to achieve knowledge on utilization and contribution of 3D printing on supply chain management and to explore the impacts of AM in supply chain management.

Effects of 3D Printing and Thermal Post Processing on the Stability of Vitamin E Acetate

Effects of 3D Printing and Thermal Post Processing on the Stability of Vitamin E Acetate

Effects of 3D-Printing linked physical education STEAM program on learners’ Problem-Solving ability

The purpose of this study is to investigate the effect of 3D printing linked physical education STEAM program on problem solving ability of middle school students. In order to achieve this purpose, this research collected data from two different groups; a control group (n=98) and a comparison group (n=101) who are attending middle schools located in Gyeonggi-do. Collected data were analyzed by SPSS 23.0 with statistical methods such as descriptive statistical analysis, exploratory factor analysis and reliability analysis, and a t-test. The results are as follows; 3D PRINTING linked physical education STEAM program is efficient in the problem solving ability. As a result, STEAM education should be applied to various ways for creative education in secondary schools.

Retailing with 3D Printing

Given the promise of three‐dimensional (3D) printing, also known as additive manufacturing, some innovative consumer goods companies have started to experiment with such a technology for on‐demand production. In this study, we consider two adoption cases of 3D printing in a dual‐channel (i.e., online and in‐store) retail setting, and evaluate its impact on a firm’s product offering, pricing, and inventory decisions. Our analysis uncovers the following effects of 3D printing. First, 3D printing at the factory has the substitution effect of technological innovation for online demands, as 3D printing replaces the traditional mode of production. Such technology substitution not only leads to increased product variety offered online, which allows the firm to charge a price premium for online customers, but also induces the firm to offer a smaller product variety and a reduced price in‐store. There is an additional environmental benefit when more customers are steered from the in‐store channel to the online channel. Second, when 3D printing is used in‐store as well, in addition to the substitution effect, the firm also achieves a structural effect due to the fundamental change in the supply chain structure. Since the in‐store demand is served in a build‐to‐order fashion, the firm achieves postponement benefits in inventory management. The environmental benefit is the most significant in this case. Moreover, using 3D printing in‐store will require a new supplier–retailer relationship. We find that cost‐sharing contracts can coordinate the supply chains where 3D printing is used in‐store and the supplier controls the raw material inventory.

Effect of 3D printing on the structure and textural properties of processed cheese

Three-dimensional (3D) printing is a process whereby complex three-dimensional objects are generated. In this study, 3D printing was investigated for food applications, using a commercially available processed cheese as the printing material. After melting at 75 °C for 12 min, the processed cheese was printed using a modified commercial 3D printer at low or high extrusion rates. Comparative assessment of untreated, melted and printed cheeses was conducted employing texture profile analysis, rheology, colourimetry and confocal laser scanning microscopy (CLSM). Processing (i.e., melting and extrusion) had a significant impact upon cheese properties. Melted and printed cheese samples were significantly (P < 0.05) less hard, by up to 49%, and both exhibited higher degrees of meltability, ranging from 14% to 21%, compared to untreated cheese samples. This shows that 3D printing substantially changes the properties of processed cheese, possibly offering new potential applications for tailoring structures using this novel process.

3D 프린팅과 체육 중심 STEAM프로그램이 중학생의 교과흥미도 및 창의적 태도에 미치는 영향

3D 프린팅과 체육 중심 STEAM프로그램이 중학생의 교과흥미도 및 창의적 태도에 미치는 영향

The effects of 3D printing in design thinking and design education

PurposeRapid prototyping and three-dimensional (3D) printing allows the direct creation of objects from 3D computer-aided design files. To identify the effects 3D printing may have on student experiences and the learning of the design process, students were asked to create a design and create a prototype of that design.Design/methodology/approachThis study follows an experimental design involving four total courses of interior design students. After conceptualizing a design, students were randomly selected to either create the prototype by hand or given access to 3D printing equipment. The models were graded by three subject experts using a rubric that focused on three key aspects of the model project, namely, craftsmanship, design quality and scale (proportion).FindingsAll three measures produced significant mean differences with a medium effect size when comparing the 3D printed models to the traditionally built models. Additional observations provided insights into the design processes approached by students using hand-constructed and 3D printed modeling. The most notable difference was the propensity for curved and rectilinear shapes by available design technologies.Research limitations/implicationsThe experiment showed that the design technology (3D printing) did have an impact on the designs students conceptualized. This suggests that students do connect ideation to implementation, and the availability of enabling technology impacts the design process. This research was conducted in an interior design environment and consists of primarily female students. The experimental research may be limited to design programs with similar student populations and levels of exposure to various design technologies.Practical implicationsThis research is designed to provide instructors and programs valuable information when looking at implementing new design technologies into the curriculum. Instructors are made aware that new design technologies do impact student design strategies. Additionally, although certain design technologies allow for revisions, it was apparent that students continued to be resistant to revise their initial models suggesting instructors prepare to address this issue in instruction.Social implicationsThere is a strong body of research indicating inequality in education where students have differing access to technologies in schools. This research shows that 3D printing, similar to many technologies in education, can impact the cognitive processes of content being learned.Originality/valueThere is limited research on how design technologies impact design cognition and the experiences of design students. This paper looked specifically at one design technology (3D printing/rapid prototyping) and how it impacts the processes and quality of design, in addition to the quality of design products (prototypes or models). Research such as this provides instructors and faculty members an insight into how design technologies impact their curriculum.