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황영택,오승규,한준영,장철섭,윤송남,이원,김환태,Hwang, Yeong-Taik,Oh, Seung-Kyu,Han, Jun-Young,Jang, Chul-Sup,Yun, Song-Nam,Yi, Won,Kim, Hwan-Tae 대한용접접합학회 2004 대한용접·접합학회지 Vol.22 No.2
Ultrasonic signals transmitted through adhesively bonded plates were used to evaluate parameters related to attenuation and frequency in the adhesively bonded joint. The kinds of bonding materials with a different bonding thickness of constant pressure were used. And ultrasonic diagnosis was evaluated by p-wave sensor of 10MHz. FFT has been performed to determine bond-layer parameters such as effective thickness and frequency for adhesively bonded joint of A16061 plates in comparison with measured to theoretical ratios. When variable thickness exists, the ultrasonic spectrum was changed the frequency wave. The more materials thickness and the higher the frequency, the larger shift was observed. Measured ratios for cases of bond thickness and variety bonding materials are then used to determine bond parameters. The results show that the technique can be applied to the characterization of adhesively bonded joint.
오승규(Oh Seung Kyu),황영택(Hwang Yeong Taik),장철섭(Jang chul Sub),이원(Yi Won) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
This article discusses the use of pulse-echo ultrasonic testing for the inspection of adhesive bonds between Thin sheet metal bonded joints. The method is based on the ultrasonic wave analysis at the metal/adhesive interface. The physical aspects of the phenomenon, an index is defined to detect stress zone of the joint, the influence of the experimental variables(variable stress...) on the measurement is discussed. By means of a control experiment it is shown that frequency wave energy in adhesive joints was confirmed the transition by stress variation.
공학교육 인증을 위한 메카트로닉스 전공 교육과정의 개발
이정우,정연두,심병민,채경덕,한세범,황영택,Lee Jeong-Woo,Jeong Yeon-Doo,Sim Byoung-Min,Chae Kyung-Duck,Han Seh-Beom,Hwang Yeong-Taik 한국공학교육학회 2005 공학교육연구 Vol.8 No.2
이 논문은 한국공학교육인증원의 공학교육인증 요구조건을 만족시키기 위한 삼척대학교 메카트로닉스 공학전공 교육과정의 연구에 관하여 기술하였다. 국내대학과 외국대학의 메카트로닉스 공학전공의 교육과정을 수집하고 분석하였다. 이 분석결과를 이용하고, 기계공학, 전기공학, 제어공학 그리고 컴퓨터공학의 유기적인 결합을 고려한 교육과정을 제시하였다. 더불어 삼척대학교의 지정학적인 조건과 한국공학교육인증원의 인증요구조건을 반영하였다. 그 결과 학생들에게 분석적인 능력과 실무적인 자질을 개발할 수 있도록 하는 다학제간 교육과정을 개발하였다. This paper describes the development of curriculum for the division of Mechatronics in Samcheok University to meet the requirement of Accreditation Board for Engineering Education of Korea(ABEEK). The curriculum of the department of mechatronics in South Korea and overseas university is analysed and then the curriculum is developed considering the synergistic combination of mechanical engineering, electronic engineering, control engineering and computer engineering. And then the geopolitical condition of university is reflected in the curriculum. ABEEK requirements for major of engineering are also reflected. As a result, interdisciplinary curriculum that provides analytic capability and pragmatic qualification to students is developed.
오승규(Oh Seung Kyu),윤송남(Yun Song Nam),황영택(Hwang Yeong Taik),장철섭(Jang Chul Sub),이원(Yi Won) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
This article discusses the use of pulse-echo ultrasonic testing for the inspection of adhesive bonds between Thin sheet metal bonded joints. The method is based on the ultrasonic wave analysis at the metal/adhesive interface. The physical aspects of the phenomenon, an index is defined to detect stress zone of the joint, the influence of the experimental variables(variable stress...) on the measurement is discussed. By means of a control experiment it is shown that frequency wave energy in adhesive joints was confirmed the transition by stress variation.
윤정의(Jeong-Eui Yun),심병민(Byong-Min Sin),한세범(Seh-Beom Han),정연두(Yeon-Doo Cheong),김동렬(Dong-Youl Kim),채경덕(Kyung-Duck Chae),황영택(Yeong-Taik Hwang),박종원(Jong-Won Park),윤성호(Seong-Ho Yoon),김용태(Yong-Tae Kim),박병완(P 한국트라이볼로지학회 2005 한국윤활학회지(윤활학회지) Vol.21 No.4
Engine lubrication system has very complex oil flow networks. Therefore it is difficult to evaluate and optimize the system only depending on experimental results. When we plan upgrading the engine performance the engine lubrication system must be considered in the plan. In this paper, engine lubrication system design using computational fluid dynamic analysis was studied. To do this, unsteady transient flow network analysis on the engine oil circuit system was carried out. Finally we discussed the design process in the modified engine lubrication system.
황영택 三陟大學校 2004 論文集 Vol.37 No.-
This article discusses the use of pulse-echo ultrasonic testing for the inspection of adhesive bonds between Thin sheet metal bonded joints. The method is based on the ultrasonic wave analysis at the metal/adhesive interface. The physical aspects of the phenomenon, an index is defined to detect stress zone of the joint, the influence of the experimental variables(variable stress...) on the measurement is discussed. By means of a control experiment it is shown that frequency energy density in adhesive joints was confirmed the transition by stress variation.
초음파법을 이용한 STS 304 용접부의 결함 검출에 관한 연구(Ⅰ)
황영택,이정윤 三陟大學校 1998 論文集 Vol.31 No.1
In recent years, the use of austenitic stainless steel 304 has been increased in chemical plant and nuclear power plant. This paper is concerned with the detection of weld defects in heat affected zone(HAZ) by using ultrasonic method. In order to detect defects of austenitic stainless steel 304 weld zone, ITRB(Incident angle and Time axis Reference Block) and RDRB(Refraction angle and DAC Reference Block) were worked. Ultrasonic techniques is used to detect artificial defects such as holes and notches. Echoes on ultrasonic equipment CRT agree fairly well with actual measured defects. Thus the proposed ultrasonic method in this work is useful for detect defects of austenitic stainless steel 304 weld zone.
황영택 三陟大學校 2001 論文集 Vol.34 No.1
The paper is concerned with the ultrasonic characteristics in weld zone of STS304 steel and the classifiability of weld defects in weld zone by using neural network. The classification of the artificial defects in weld zone is performed using the characteristics of echodynamic pattern in ultrasonic signal. Neural network and ultrasonic technique is applied to the classification and existence domain of artificial defects such as holes and notches. Results of system A,B agree fairly well with the ultrasonic results. Thus the proposed neural network is useful for the classfication and evaluation of weld defects.