• The Research Journal of the Costume Culture
• /
• v.26 no.6
• /
• pp.919-933
• /
• 2018

Recently, the textile and fashion industry has adopted 3D printing technology, through which filaments are accumulated continuously in the form of sections to produce digitalized three-dimensional fashion products. Little research has been done regarding the consumer perspectives on 3D printed fashion product. Therefore, the purpose of this study was to investigate the effects of consumer innovativeness, uniqueness, and perception factors on consumer attitudes and purchasing intentions for 3D printed fashion products. A questionnaire was given to consumers living in Seoul and Kyunggi, South Korea. The data obtained from the 159 completed questionnaires was analyzed by regression analysis, factor analysis, and Cronbach's alpha using SPSS 24.0. The results were as follows: First, consumer innovativeness and uniqueness, in descending order, positively affect the perceived social image. Consumer innovativeness positively affects perceived aesthetics and consumer uniqueness positively affects perceived novelty. Second, social image has a positive effect on consumer attitudes to 3D printed fashion products. Third, consumer attitude positively affects purchasing intentions towards 3D printed fashion products. Fourth, consumer innovativeness and uniqueness, in descending order, have a positive effect on consumer attitudes and purchasing intentions for 3D printed fashion products. Fifth, social image and novelty, in descending order, positively affect purchase intentions for 3D printed fashion products. Therefore fashion firms should develop their marketing strategy to focus on innovative, unique consumers as a main target and aim to enhance buyers' social image by using 3D printed fashion products.

• Journal of the Microelectronics and Packaging Society
• /
• v.28 no.2
• /
• pp.1-12
• /
• 2021

3D printing, which designs product in three dimensions, draws attention as a technology that will lead the future for it dramatically shortens time for production without assembly, no matter how complex the structure is. The paper studies the latest researches of 3D-printed electronics and introduces papers studied electronics components, power supply, circuit interconnection and 3D-printed PCBs' applications. 3D-printed electronics showed possibility to simplify facilities and personalize electric devices by providing one-stop printing process of electronic components, soldering, stacking, and even encapsulation.

• Journal of the Korean Society of Manufacturing Process Engineers
• /
• v.15 no.2
• /
• pp.1-8
• /
• 2016

Generally, electrical circuits are fabricated as Printed Circuit Boards (PCBs) and mounted on the casing of the product. Additionally, this requires many other parts and some labor for assembly. Recently, molding technology has increasingly been applied to embed simple circuits in plastic casing. The technology is called a Molded Interconnected Device (MID). By using this technology, PCB fabrication can be replaced by molding, and much of the corresponding assembly process for PCBs can be eliminated if the circuit is simple enough for molding. Furthermore, as the improvement of conductive materials and printing technologies of simple electric circuits can be printed directly on the casing part, this also reduces the complexity of the product design and production cost. Therefore, this paper introduces a new MID fabrication process using direct 3D printing technology. Additionally, it is applied to an automotive part of a cruise control switch. The methodology and design are shown.

• Elastomers and Composites
• /
• v.51 no.4
• /
• pp.275-279
• /
• 2016

Additive manufacturing or 3D printing is a new manufacturing process and its application is getting growth. However, the product qualities such as mechanical strength, dimensional accuracy, and surface quality are low compared with conventional manufacturing process such as molding and machining. In this study not only mechanical characteristics of polymer sandwich panel having three dimensional core layer but also mechanical characteristics of core layer itself were analyzed. The shape of three dimensional core layer was pyramidal kagome structure. This core layer was fabricated by two different methods, injection molding with PP resin and material jetting type 3D printing with acrylic photo curable resin. The material for face sheets in the polymer sandwich panel was PP. Maximum load, stiffness, and elongation at break were examined for core layers fabricated by two different methods and also assembled polymer sandwich panels. 3D printed core showed brittle behavior, but the brittleness decreased in polymer sandwich panel containing 3D printed core. The availability of 3D printed article for the three dimensional core layer of polymer sandwich panel was verified.

• Structural Engineering and Mechanics
• /
• v.75 no.3
• /
• pp.369-376
• /
• 2020

The life of conventional steel plastic injection molds is long but manufacturing cost and time are prohibitive for using these molds for producing prototypes of products in limited numbers. Commonly used 3D printers and rapid prototyping methods are capable of directly converting the digital models of three-dimensional solid objects into solid physical parts. Depending on the 3D printer, the final product can be made from different material, such as polymer or metal. Rapid prototyping of parts with the polymeric material is typically cheaper, faster and convenient. However, the life of a polymer mold can be less than a hundred parts. Failure of a polymeric mold during the injection molding process can result in serious safety issues considering very large forces and temperatures are involved. In this study, the feasibility of the inspection of 3D printed molds with the surface response to excitation (SuRE) method was investigated. The SuRE method was originally developed for structural health monitoring and load monitoring in thin-walled plate-like structures. In this study, first, the SuRE method was used to evaluate if the variation of the strain could be monitored when loads were applied to the center of the 3D printed molds. After the successful results were obtained, the SuRE method was used to monitor the artifact (artificial damage) created at the 3D printed mold. The results showed that the SuRE method is a cost effective and robust approach for monitoring the condition of the 3D printed molds.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2019.05a
• /
• pp.516-517
• /
• 2019

3D printing technology has been receiving attention as a key technology in that it can output 3D printed designs that are either virtual or flat. This study analyzed the general manufacturing process by first compiling the concept of shoes, presented the 3D printed shoe manufacturing process, and studied custom manufacturing techniques by dividing the produced shoe cases by brand (sports brand, designer brand). Through case analysis, 4 design manufacturing techniques of 3D printed shoes were derived. Therefore, this study is expected to provide a basis for more advanced creative ideas in the shoe design area using 3D printing.

• Journal of the Semiconductor & Display Technology
• /
• v.20 no.4
• /
• pp.177-181
• /
• 2021

Scaffolds protect the sensor in the body. Scaffolds are made of a bioabsorbable polymer. The polymer process is sensitive to humidity. Inside of the 3D printer has been improved to control the humidity. Specimens were produced by injection molding and 3D printer. 3D printed specimens were printed under various humidity conditions. We measured tensile strength of the injection-molded specimen and tensile strength of the 3d printing specimen. We compared tensile strength of the injection-molded specimen and tensile strength of the 3d printing specimen. Tensile strength of the injection-molded specimen is 557 kgf/cm². We confirmed tensile strength of the specimen was highest at 741 kgf/cm² when the humidity was 10 %. We confirmed lower the humidity, higher tensile strength of the polymer product.

• Journal of Fashion Business
• /
• v.24 no.3
• /
• pp.85-100
• /
• 2020

Recently, 3D printing technology, which is suitable for small-volume production of many varieties, has become considered a key manufacturing technology in the 4th industrial revolution. However, the nature of 3D printing technology means it is not yet able to be applied to traditional textiles due to Fabric Flexibility. The aim of this study is to investigate Textile Structural Design by finding the optimal yarn thickness for Selective Laser Sintering (SLS) 3D printed structures on geogrid dobby woven fabric that gives the optimal flexibility and tensile strength in the final product. The test results for tensile load strength of the 3D printed test samples, using 1.0mm, 0.8mm, 0.6mm and 0.4mm yarn thicknesses, showed that all were found to be above 250N, this higher than the tensile strength of 180N that is recommended for textile products. Based on these results, the four dobby structural patterns with 3D printing produced had four yarn thicknesses: 1.0mm, 0.8mm, 0.6mm, and 0.4mm. The thinner the yarn, the more flexible the fabric; as such the optimal conditions to produce SLS-based 3D printed textiles with suitable strength and flexibility used a thickness of yarn in the range of 0.4mm to 0.6mm.

• Science of Emotion and Sensibility
• /
• v.18 no.3
• /
• pp.25-34
• /
• 2015

This paper investigates effective locations for two products in printed media advertisement (in which one is the relatively higher price product and the other is the relatively lower price product), and provides some insights on the effective locations of multiple products in printed media advertisements. For the research purpose, this paper develops 4 different versions of printed media advertisement and conducts an experiment study to compare consumers' responses on the different versions: Type A(the higher price product is located at the left side of advertisement, and the lower price product is located at the right side of advertisement), Type B(the higher price product is located at the right side of advertisement, and the lower price product is located at the left side of advertisement), Type C(the higher price product is located at the top side of advertisement, and the lower price product is located at the bottom side of advertisement), Type D(the higher price product is located at the bottom side of advertisement, and the lower price product is located at the top side of advertisement). The results of the experiment show that marketers can increase consumers' choices on the both products when they locate the higher price product at the left side or the top of advertisement and do the lower price product at the right or the bottom of advertisement.

• ETRI Journal
• /
• v.42 no.2
• /
• pp.272-281
• /
• 2020

Three-dimensional (3D) selfie services, one of the major 3D printing services, print 3D models of an individual's face via scanning. However, most of these services require expensive full-color supporting 3D printers. The high cost of such printers poses a challenge in launching a variety of 3D printing application services. This paper presents a stencil-based 3D facial relief creation method employing a low-cost RGBD sensor and a 3D printer. Stencil-based 3D facial relief is an artwork in which some parts are holes, similar to that in a stencil, and other parts stand out, as in a relief. The proposed method creates a new type of relief by combining the existing stencil techniques and relief techniques. As a result, the 3D printed product resembles a two-colored object rather than a one-colored object even when a monochrome 3D printer is used. Unlike existing personalization-based 3D printing services, the proposed method enables the printing and delivery of products to customers in a short period of time. Experimental results reveal that, compared to existing 3D selfie products printed by monochrome 3D printers, our products have a higher degree of similarity and are more profitable.