{"title":"Implementation and Verification of Fresnel Zone Plate Patterns Designed by Optimization of Surface Phase","authors":"Huy Vu, Joohyung Lee","doi":"10.7736/jkspe.023.124","DOIUrl":"https://doi.org/10.7736/jkspe.023.124","url":null,"abstract":"In this study, we present a numerical simulation approach for designing Fresnel zone plate (FZP) patterns. By optimizing surface phase parameters using desired merit functions in ray-tracing software, the obtained surface phase was converted into an FZP pattern through a 5-step procedure. A comparison between our numerical simulation approach and the traditional analytical method showed a negligible zone size difference of 0.606 nm and nearly absolute agreement of 17.549 µm in focal spot size. The FZP pattern was experimentally verified by an expected focal spot size of 18.55 µm. Our approach demonstrated design flexibility and has potential applications in simulating various functionalities in FZP patterns and refractive-diffractive hybrid lenses to address specific optical challenges. The surface phase can be freely modified based on optimization objectives that cannot be achieved using the analytical approach, ensuring high-precision design for accurate extraction.","PeriodicalId":37663,"journal":{"name":"Journal of the Korean Society for Precision Engineering","volume":"54 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139590833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Taehoon Kim, Joono Cheong, Hwi-Su Kim, Taeyong Choi, Jinho Kyung, Dae-Kug Lee
{"title":"Screwing Automation System Using a Collaborative Robot for Steel Plate Assembly","authors":"Taehoon Kim, Joono Cheong, Hwi-Su Kim, Taeyong Choi, Jinho Kyung, Dae-Kug Lee","doi":"10.7736/jkspe.023.109","DOIUrl":"https://doi.org/10.7736/jkspe.023.109","url":null,"abstract":"","PeriodicalId":37663,"journal":{"name":"Journal of the Korean Society for Precision Engineering","volume":"47 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139590868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Verification of Walking Efficiency of Wearable Hip Assist Robot for Industrial Workers: A Preliminary Study","authors":"Yun-Hee Chang, Jung-Sun Kang, Bo-Ra Jeong, Bok-Man Lim, Byung-June Choi, Youn-Baek Lee","doi":"10.7736/jkspe.023.094","DOIUrl":"https://doi.org/10.7736/jkspe.023.094","url":null,"abstract":"In highly mobile workplaces","PeriodicalId":37663,"journal":{"name":"Journal of the Korean Society for Precision Engineering","volume":"34 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139591142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Press Forming/Drawing Molding in the Radiator Support Mold Process of 440 MPa High Strength Steel Sheets","authors":"Dong-Hwan Park, T. Lee, H. Kwon","doi":"10.7736/jkspe.023.110","DOIUrl":"https://doi.org/10.7736/jkspe.023.110","url":null,"abstract":"This study aimed to develop automotive radiator support parts by applying the press forming/drawing mold technology of 440 MPa high-tensile steel sheets. It is intended to develop a shape structure that does not generate shape and positional accuracy, deformation, wrinkles, or cracks by maintaining strong contact surface pressure on both sides of the blank material and freezing elastic recovery stress. Therefore, quality improvement and high productivity were secured by applying the forming/drawing method of high-strength steel sheets to the radiator support parts.","PeriodicalId":37663,"journal":{"name":"Journal of the Korean Society for Precision Engineering","volume":"11 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139591331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of the Wearable Assistive Suit on Muscle Activity during Lifting Tasks","authors":"Kwang-Hee Lee, C. Hong, Mi Yu, Tae-kyu Kwon","doi":"10.7736/jkspe.023.103","DOIUrl":"https://doi.org/10.7736/jkspe.023.103","url":null,"abstract":"","PeriodicalId":37663,"journal":{"name":"Journal of the Korean Society for Precision Engineering","volume":"48 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139590866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dong-Oak Lee, Chang-Il Roh, Won-Shik Chu, Chul-Ki Song
{"title":"Economic Feasibility Study for Small Hydropower Plant Construction: in Samcheonpo Area","authors":"Dong-Oak Lee, Chang-Il Roh, Won-Shik Chu, Chul-Ki Song","doi":"10.7736/jkspe.023.079","DOIUrl":"https://doi.org/10.7736/jkspe.023.079","url":null,"abstract":"","PeriodicalId":37663,"journal":{"name":"Journal of the Korean Society for Precision Engineering","volume":"53 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139590849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hong-Seok Kim, Joon-Hyung Park, Gang-Min Sung, Beom-Joon Kang, Seong-Kyun Cheong, Ki-Hoon Shin
{"title":"A Study on the Shear Characteristics based on the Coverage of Shot-peened Al6061-T6 Bonded with CFRP","authors":"Hong-Seok Kim, Joon-Hyung Park, Gang-Min Sung, Beom-Joon Kang, Seong-Kyun Cheong, Ki-Hoon Shin","doi":"10.7736/jkspe.023.081","DOIUrl":"https://doi.org/10.7736/jkspe.023.081","url":null,"abstract":"","PeriodicalId":37663,"journal":{"name":"Journal of the Korean Society for Precision Engineering","volume":"32 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139590908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Model-based Motion Control Design of a Linear Motor Stage in Frequency Domain","authors":"Hee-Won Jeon, Hyeong-Joon Ahn","doi":"10.7736/jkspe.023.107","DOIUrl":"https://doi.org/10.7736/jkspe.023.107","url":null,"abstract":"","PeriodicalId":37663,"journal":{"name":"Journal of the Korean Society for Precision Engineering","volume":"40 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139591077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development of On-site Analytical Device for Hydrogen Sulfide Using Colorimetric Paper Sensor","authors":"Gi-Ja Lee, Yoo-Ri Na, Jae-Chul Lee","doi":"10.7736/jkspe.023.072","DOIUrl":"https://doi.org/10.7736/jkspe.023.072","url":null,"abstract":"","PeriodicalId":37663,"journal":{"name":"Journal of the Korean Society for Precision Engineering","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139591090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hyeon-Soo Shin, Jun-Young Lee, Min-Jae Kim, G. Eom
{"title":"Gender Comparison of Mechanical Work in the Lower Limb Joints Required for Body Weight Elevevation during Stair Ascent","authors":"Hyeon-Soo Shin, Jun-Young Lee, Min-Jae Kim, G. Eom","doi":"10.7736/jkspe.023.062","DOIUrl":"https://doi.org/10.7736/jkspe.023.062","url":null,"abstract":"","PeriodicalId":37663,"journal":{"name":"Journal of the Korean Society for Precision Engineering","volume":"207 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139025030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}