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장병섭(Jang byeong-seob) 한국재산법학회 2007 재산법연구 Vol.24 No.1
There were many enterprises went bankrupt by going through the economy crisis in 1997 but the established three laws of insolvency including composition act, bankruptcy act and company reorganization act left much to be desired in many ways to settle increase of insolvency cases rapidly and efficiently.<BR> Referring to the matter, insolvency laws were revised for several times since 1998 and operational defects of procedural insolvency were improved by law with such efforts. However, insolvency acts of those days were difficult to make a decision upon insolvency because of industrial disaster and enterprises using the acts went through difficulties selecting efficient revival ways due to confrontation of opinions between various interested parties.<BR> To make improvement in economic stabilization, impartial and efficient procedures of insolvency is very important. To settle such matters. under the recognition of needs in fundamental improvement, the established three insolvency acts were unified with simplification acts through legislative procedure for four years since 2001 and ’the act on debtor"s reorganization and bankruptcy; what we call "uniform insolvency act" were carried into effect starting from April 4th in 2006.<BR> However, the legislative period were relatively insufficient to prepare the acts comparing to quantity to manage. Moreover, due to available uplift of insolvency procedures or emphasis on effective uplift, it was rather indifferent in practical maintaining equity between interested parties.<BR> Accordingly, this thesis investigates main contents and characteristics of insolvency laws in other advanced countries where the restoration system of enterprises is proceeded as legislation and analyzes whether there are any suggestions in the application of the law in each countries. Centering the ruling class of business failure in accordance with the restoration system of enterprises, it gropes an effective settlement plan which is suitable for our reality and presents a reform measure in insolvency acts that supports effective restoration and lasting development of bankrupt businesses.<BR> Summarizing the points and legislative suggestions of integrated insolvency acts are as follows.<BR> First, variant DIP (debtor in possession system) is introduced and under a unified code of the uniform Insolvency laws, the rights and function of the creditors" council are inadequate. Accordingly, as procedure party concerned, phase of creditors" council should be changed as a creditors" committee like the example from the USA and Germany.<BR> Second, administrators should be selected among third persons who have professional management abilities as a general rule but the reason of facing bankruptcy at businesses do not have insolvent responsibility which is caused by the result of the unpredictable management including radical changes of external environment. Among the existing management, they need to apply management know-how and limits to agreement case at the creditors" council that it should be revised to assign obligators and the exiting management as an administrator.<BR> Finally, for all the interested parties" maximum profit, the revival targets, including obligators and planning speedy and effective performance of insolvency procedures, application of restoration proceedings should be conducted and at the same time, compulsory execution on duties and properties of obligators should be automatically stopped by the way of introducing the American style of Automatic Stay System.
IEC1400-1 국제표준을 적용한 대형 수평축 풍력발전용 회전날개의 설계개선
공창덕,방조혁,정종철,감명훈,정석훈,장병섭,안주연 朝鮮大學校 機械技術硏究所 2000 機械技術硏究 Vol.3 No.2
풍력 터빈회전날개의 설계시 구조적 형상을 결정하는 예비설계 단계에서 종전에는 여러 가지 다양한 경우의 설계를 수행하여 이중 적합한 경우을 채택하는 시행착오 방법은 많은 설계시간을 요하였으나, 본 연구에서는 이 같은 설계시의 비효율적 요소를 배제하고자 적층판 이론을 기초로 한 설계프로그램을 이용하는 설계기법을 계발함으로서 설계절차를 개선하였다. 개선된 설계절차에 따라 국제표준 설계규격 IEC1400-1에서 규정한 각 경우의 하중해석과 응력, 변형율 및 변형한계를 설정한 후, 단순화한 복합재 회전날개 구조에 혼합법칙과 주 응력 설계기법을 이용하여 복합재 구조의 형상을 정하였다. 설계된 구조는 본 연구를 통해 개발된 적층판 이론을 기초로 한 프로그램을 이용하여 강도 및 좌굴에 대한 구조의 안정성을 확인하여 상세설계 과정 시 소요되는 시간을 최소화하였다. 설계된 구조는 표피 등을 고려하여 수정 설계한 후 유한요소법을 이용하여 응력, 변형율, 변위, 고유진동수, 좌굴안정성, 피로수명등을 해석하여 국제 표준규격의 만족여부를 확인하였다. Because the previous design procedure for the composite wind turbine blade structure using trial and error method takes long time, a improved design procedure by using the program based on classical laminate theory was proposed to reduce the inefficient element. According to the improved design procedure, limitation of strains, stresses and displacements specified by international standard specification IEC1400-1 for the composite wind turbine blade were applied to sizing the structural configuration by using the rule of mixture and the principal stress design technique with a simplified turbine blade. Structural safety for strength and buckling stability was confirmed by the developed analysis program based on the laminate theory to minimize the design procedure. After modifying the preliminary design result with additional structural components such as skin, foam sandwich and mounting joints, stresses, strains, displacements, natural frequency, buckling load and fatigue life were analyzed by the finite element method. Finally these results were confirmed by comparing with IEC1400-1 specification.
김인권(Kim In-Gwon),공창덕(Kong Chang-Duk),장병섭(Jang Byung-Sub) 대한기계학회 2001 대한기계학회 춘추학술대회 Vol.2001 No.3
The purpose of this work is to investigate the static strength, the stress distribution, and the failure process of quasi-isotropic composite laminates made of two different matrices when loading directions are changed. We carried out static tests of [0/-60/+60]<SUB>s</SUB> and [+30/-30/90]<SUB>s</SUB> laminates. Two types of matrices used are AS4/epoxy and AS4/PEEK. The damage mechanisms of the quasi-isotropic laminate, [0/-60/+60]<SUB>s</SUB> strongly depend on the load direction applied to the laminate.