• Proceedings of the KSME Conference
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• 2005.11a
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• pp.19.1-19.1
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• 2005

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.05a
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• pp.228-228
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• 2004

공작기계가 생산시스템에 사용된 이후 생산시스템은 대량생산체제를 거쳐 소비자의 다양한 욕구에 부응하기 위한 Mass Customization 생산체제가 정립되었다. 이러한 생산시스템의 발전은 공작기계와 같은 다양한 생산장비들이 유기적으로 결합되어 유연성과 이식성을 부여하고, 이를 구현하기 위해 지능화된 제어시스템을 도입하게 되었다 지능화란 인간전문가가 생산장비를 운영하는 방법과 가공에 필요한 지식 및 이상상태에 따른 대처능력을 대상기계에 구현한 것이라고 할 수 있다.(중략)

• 월간 기계설비
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• s.139
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• pp.25-27
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• 2002

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.219-224
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• 2007

As use of construction equipment has been increasing continuingly, the proportion of equipment expense to the total construction cost has become higher. However, there is a difference between the equipment expenses section in 'Poom-Sam' and practical data, because 'Poom-sam' does not consider non-working days due to weather conditions, legal holidays and management conditions. Therefore, 'Poom-Sam' does not present a reasonable standard for estimating construction equipment expenses. In this study, to estimate realistic construction equipment operating hours, firstly, construction equipment was classified according to work, and weather conditions, in which each work could not be executed, were established. Then, weather data on Seoul and Busan(2004${\sim}$2006) and legal holidays were analyzed to suggest annual standard operating hours. The annual standard operating hours of earthmoving & excavating, compaction, and drilling equipment was estimated to be 1,430 hours, and lifting equipment, concrete paving equipment, asphalt paving equipment, concrete equipment, and crushing & conveying equipment were estimated to be 2,124 hours, l,156hours, 1,188hours, 1,688hours, and 2,152hours respectively.

• Korean Journal of Construction Engineering and Management
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• v.8 no.4
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• pp.194-202
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• 2007

The earth work has been improved with the utilization of capital intensive equipments. However, work performance is not satisfactory yet due to its experience-oriented characteristics in selecting the combination of earth work equipments. Therefore, it is required to study on appropriate and systematic methods in selecting a set of equipments for earth work in order to optimize the cost and time as well as to improve the productivity. The objectives of this paper are as followed : (1) developing an optimum combination model of earth work equipments by using a system dynamics technique. (2) testing and evaluating the model by the sample application to a case study. The research is limited to the work of excavating, loading and hauling. The suggested model is proved in practice, so it will assist engineers to make the proper decision for equipment planning of earth work.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2007.11a
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• pp.194-194
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• 2007

기존 imprint공법으로 기계식 프레스를 많이 사용되고 있으며, 기계식 프레스를 이용하여 imprint시 균일하게 압력인가가 되지 않는 것을 알게 되었다 예를 들어 한쪽으로 많이 눌리고 다른쪽은 적게 눌려서 균일하게 패턴 전사가 되지 않아 imprint실험이 힘들었었다. 그리하여 Autoclave라는 공압장비를 알게 되었고 공기의 압력을 이용하여 imprint시 균일하게 압력인가가 전해지는 것을 알 수 있었다. Autoclave장비를 이용하여서 imprint가능성 확인과 기계식 장비와 공압식 장비의 차이점을 비교하여 설명을 하고자 함.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.39 no.5
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• pp.507-515
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• 2015

This study was conducted to develop and verify a torque application device for use in a mechanical power-circulation test rig for 5.5 MW wind turbine gearboxes. The design and analysis of the torque application device was conducted. In addition, the torsional stiffness of the test rig was calculated using the rotational angle measurements for each of the components. The calculated stiffness of the test rig was $231.13kN{\cdot}m/rad$ for a clockwise torque application. The rated torque can be applied when the stiffness of the gearbox is greater than $1,064,400kN{\cdot}m/rad$ for a clockwise torque application. Because of the limited rotational angle of the test rig, the potential application of the rated torque is determined according to the torsional stiffness of the test gearbox.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.467-470
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• 2006

The earth volume which is the basis of all the construction has gone through great development so far with the use of construction machine; however, systematic studies on the related area is in need since the appropriate compound engineering method of earth volume equipments which is a key factor for shortening the project duration and cost reduction is not systematically established and it is dependent on experience. Reasonable mechanical earth volume should take into consideration of performance and characteristics of the equipment, the kind of project, scale and conditions in advance. Also, the optimum compound engineering should be planned by selecting several available scales of equipment. In this study, the earth volume estimate model is established for optimum compound engineering of earth volume equipment for mechanized earth volume equipment loading and moving stage among many stages of earth volume task using system dynamics technique. The optimum compound engineering model of the earth volume equipment produced as a result of this is expected to make reasonable decisions in the shortest time in selecting earth volume facility.

• Bulletin of the Society of Naval Architects of Korea
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• v.31 no.3
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• pp.48-51
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• 1994

일반적으로 모니터링 장비는 주로 플랜트의 운전 상태를 감시하고 제어하는 목적으로 쓰이고 있 는데 계측하는 각종 변수는 변화속도가 빠르지 않은 정적 데이터인 경우가 대부분이라고 할 수 있다. 그러나 기계상태나 구조안전 감시장치 등에 쓰이는 모니터링 장비는 진동 혹은 동적 데이 터를 계측하고 주파수 분석까지를 해야 하기 때문에 데이터의 취득속도가 현저히 빨라야하고 이 에 따른 여러 가지 신호처리 기법을 적용해야 한다. 본고에서는 선박에 쓰이고 있는 기계상태와 구조안전 감시를 위한 모니터링 장비의 동향에 대하여 알아보았다.

• 기계와재료
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• v.21 no.2
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• pp.146-155
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• 2009

본고에서는 레이저 가공의 시대적 요구사항인 고속화와 대면적화에 부응하기 위한 고속 레이저 가공 및 장비 핵심기술의 개발 동향을 분석하고자 한다. 여기서, 고속 레이저 가공기술은 갈바노 모터를 사용하는 고속 스캐너(scanner)와 정밀 스테이지를 연동하여 대면적 제품을 연속으로 가공하는 기술을 말하며 FPD 공정, 태양전지가공, 리모트용접 공정 등에 대표적으로 적용된다. 본고에서는 최근 한국기계연구원에서 개발하고 있는 고속 레이저 가공 및 장비 핵심기술 관련 연구개발 내용도 일부 소개하고자 한다.