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순수 비틀림 모멘트를 받는 직교 이방성체의 광탄성 시험법 개발에 관한 연구( I )-차원 광탄성 실험법 모델의 절단법과 $G_{i} 와 f_{ij}$ 의 측정법 -
황재석,방창일 대한기계학회 1991 대한기계학회논문집 Vol.15 No.2
To develop the photoelastic experiment method for the orthotropic material under pure torsional moment is the main objective of this research. In the development of photoelastic experiment for orthotropic material under pure torsional moment, the important problems and their solutions are the same as following. In the model material for photoelastic experiment, it was found that C.F.E.C.(Copper Fiber Epoxy Composite) can be used as the model material of photoelastic experiment for orthotropic material. In the stress freezing cycle, it was assured that stress freezing cycle for epoxy can be used as the stress freezing cycle of the photoelastic experiment for orthotropic material. In the slicing method, it was found that the negative oblique slicing method can be effectively used as slicing method in 3-dimensional photoelastic experiment. In the measuring method of stress fringe values and physical properties in the high temperature, it was found that stress fringe values can be directly measured by experiment and physical properties can be directly or indirectly by equation between stress fringe values and physical properties developed by author. In the stress analysis method of orthotropic material under pure torsional moment by photoelastic experiment, it will be studied in the second paper.
주문경 ( Moon Kyung Joo ),박찬혁 ( Chan Hyuk Park ),김준성 ( Joon Sung Kim ),박재명 ( Jae Myung Park ),안지용 ( Ji Yong Ahn ),이봉은 ( Bong Eun Lee ),이정훈 ( Jeong Hoon Lee ),양효준 ( Hyo-joon Yang ),조유경 ( Yu Kyung Cho ),방창 대한소화기학회 2020 대한소화기학회지 Vol.76 No.3
The Korean guidelines for nonsteroidal anti-inflammatory drug (NSAID)-induced peptic ulcers were previously developed under co-work with the Korean College of Helicobacter and Upper Gastrointestinal Research and Korean Society of Gastroenterology at 2009. On the other hand, the previous guidelines were based mainly on a literature review and expert opinions. Therefore, the guidelines need to be revised. In this study, a guideline development committee for drug-induced peptic ulcers was organized under the Korean College of Helicobacter and Upper Gastrointestinal Research in 2017. Nine statements were developed, including four for NSAID, three for aspirin and other antiplatelet agents, and two for anticoagulants through de novo processes based on evidence-based medicine, such as a literature search, meta-analysis, and the consensus was established using the modified Delphi method. The primary target of this guideline was adult patients taking long-term NSAIDs, aspirin, or other antiplatelet agent and anticoagulants. The revised guidelines reflect the consensus of expert opinions and are intended to assist relevant clinicians in the management and prevention of drug-induced peptic ulcers and associated conditions. (Korean J Gastroenterol 2020;76:108-133)