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파손평가선도(FAD)를 이용하여 배관균열 길이에 따른 균열진전하중 및 최대하중 예측
배근형(Keun Hyung Bae),오창영(Chang Young Oh),류동일(Dong il Ryu),김윤재(Yun Jae Kim) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
This paper proposes changes of the crack initiation load and maximum load assessed through FAD(failure assessment diagram), according to the crack length on the cracked pipe. FAD is one of the method to evaluate crack initiation load in the cracked pipe, proposed on R6 solution. Predicting crack initiation load and maximum load is possible by using FAD with tearing locus. In the case of surface crack, crack propagation in the depth direction is considered. Meanwhile, as in the case of through wall crack, crack propagation along the circumferential direction is considered. Finally, the results based on FAD predictive study are compared with the test result from Battelle.
풍력발전기 모사 시스템에서의 균열 결함 진단에 대한 연구
배근호(Keun-Ho Bae),박종원(Jong-Won Park),김봉기(Bong-Ki Kim),최병오(Byung-Oh Choi) 한국신뢰성학회 2014 신뢰성응용연구 Vol.14 No.4
An experimental gear-box was set-up to simulate the real situation of the wind-turbine. Artificial cracks of different sizes were machined into the gear. Vibration signals were acquired to diagnose the different crack fault conditions. Time-domain features such as root mean square, variance, kurtosis, normalized 6th central moments were used to capture the characteristics of different crack conditions. Normal condition, 1 mm crack condition, 2mm crack condition, 6mm crack condition, and tooth fault condition were compared using ANFIS and DAG-SVM methods, and three different DAG-SVM models were compared. High-pass filtering improved the success rates remarkably in the case of DAG-SVM.
강배근 ( Bae-keun Kang ),전인오 ( In-oh Jeon ),양해술 ( Hae-sool Yang ) 한국정보처리학회 2009 한국정보처리학회 학술대회논문집 Vol.16 No.1
ERP 시스템은 기업의 이익을 최대화하기 위해 생산·판매·물류·회계·인사 등 기업의 기간 업무를 조직적·횡단적으로 파악하고, 경영 자원의 활용을 전사적으로 최적화하려는 계획 관리를 위한 경영 개념으로 사용되었다는 것을 알 수 있다. ERP시스템을 도입함으로써 얻는 이점으로는 실시간으로 제공되는 각종 재무, 생산관련 자료를 통한 신속한 의사결정 지원으로 의사결정의 일관성 및 질을 향상 시킬수 있으며 효율적인 재고관리를 통한 보관 및 유통비용의 최소화 등을 들 수 있다. 본 연구에서는 ERP 시스템을 고려하고 최신 웹기술을 고려하여 웹환경 ERP 시스템을 설계하고 구축하여 고객의 불만해소와 업무 생산성 향상 및 경제적 절감등의 주안점을 두어 연구를 진행하였다.
강배근 ( Bae-keun Kang ),전인오 ( In-oh Jeon ),양해술 ( Hae-sool Yang ) 한국정보처리학회 2009 한국정보처리학회 학술대회논문집 Vol.16 No.2
운영체제의 기본적인 역할은 각종 컴퓨터 하드웨어들을 서로 논리적으로 연결하고 제어하는 것으로 다른 역할은 응용프로그램과 컴퓨터 하드웨어를 연결해주는 역할을 한다. 본 연구에서는 운영체제 소프트웨어 분야의 기반기술 및 동향을 조사하고 표준시험환경을 구축해 보았다.
박성오(Sung Oh Park),고혁(Hyuk Ko),김수희(Su Hee Kim),박배근(Bae Keun Park),김승용(Seung Yong Kim),유철희(Chul Hee You),김연석(Youn Suk Kim) 대한소화기학회 2001 대한소화기학회지 Vol.38 No.6
Hepatic epithelioid hemangioendothelioma (HEH) is a rare vascular tumor of the liver. HEH is endothelial origin, and has a intermediate clinical course between benign hemangioma and an angiosarcoma of the liver. It usually appears as multiple hypoechoic nodules on US scan and hypodense on CT scan. Definite diagnosis is made by histopathology of specimens obtained from the tissue biopsy. We present a case of HEH which presented with multiple nodules within the liver on CT scan. The diagnosis was made by laparoscopic liver biopsy. (Korean J Gastroenterol 2001;38:433-435)
오윤희 ( Yoon Hee Oh ),송운재 ( Woun Jae Song ),이필돈 ( Pil Don Lee ),박배근 ( Bae Keun Park ) 한국동물위생학회 1999 한국동물위생학회지 (KOJVS) Vol.21 No.4
In order to survey the prevalence of intestinal parasites in dogs, 304 fecal samples were taken from dogs in Taejon city. The prevalence and identification of intestinal parasites were determined by the fecal examinations using sheather`s floating technique and sedimentation methods and then Cryptosporidium oocysts were identified by kinyoun`s modified acid fast stainning method. The results were obtained as follows; 1. Parasite eggs and oocysts were detected in 105 samples(34.5%) from 304 cases of dog feces. 2. The 11 kinds of eggs and oocysts were isolated from the feces of dog. Those were Ancylostoma caninum(12.1%, 37 dogs), Trichuris vulpis(11.5%, 35 dogs), Toxocara canis(10.2%, 31 dogs), Isospora sp(7.2%, 22 dogs), Cryptosporidium sp(3.6%, 11 dogs), Toxascaris leonina(1.9%, 6 dogs), Strongyloides sp(1.9%, 6 dogs), Taenia sp(0.6%, 2 dogs), Diphylidium caninum(0.3%, 1 dog), Spirometra sp(0.3%, 1 dog) and Clonorchis sinensis(0.3%, 1 dog). 3. It was mixed infection such as single, double, triple and quadruple, 64.8%, 25.7%, 8.6% and 0.9%, respectively. 4. In indiviually-raised dogs, the infectious rate of T canis(11.4%), A caninum(13.2%), Cryptosporidium sp(6.1%), T leonina(2.6%) were higher than those of group raised dogs. But the infectious rate of T vulpis(12.1%) in group raised dogs was higher than that of individually-raised dogs. 5. Adults of Demodex and Sarcoptes which have been found in this survey are excluded in this report.