• 실천공학교육논문지
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• 제16권3_spc호
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• pp.259-265
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• 2024

대학 학부생들의 SW융합 역량을 향상하기 위해서는, 관련 강좌의 개발과 함께 학부생들의 코드 설계 역량을 평가하는 방법이 연구되어야 한다. 기존 연구에서는 코드 결과물에 대해 정성적인 평가방법과 정량적인 상대평가방법이 있었으며, 정량적인 상대평가방법에서는 문제분해깊이 수, 함수재사용 회수와 함수 개수를 측정하여 평가하였다. 본 연구에서는 기존 연구에서 제시되지 않은 평가방법으로서, 코드 설계 시 입력과 출력 정보종류의 수를 제시하는 문제를 이용한 평가방법을 제안하였다. 본 논문에서 제안한 평가 문제들은 입력 정보 종류의 수와 출력 정보 종류의 수를 3개까지 적용하였다. 이를 통해 5가지 코드설계 평가문제를 제시하고 코드설계 점수를 정량적으로 산출하는 방법을 제안하였다. 제안한 평가방법을 적용한 강좌를 통해 100명 학생 응답자들의 코드들을 수집하고 분석하였다. 결과 분석을 통해, 문제분해깊이 수는 입력 정보의 종류 개수에 비례하고, 함수 재사용 회수는 출력 정보의 종류 개수에 비례하며, 함수 개수는 입력과 출력 정보의 종류 총개수에 비례하는 상관성을 나타내었다. 마지막으로 100명 응답자의 평가 점수 분포를 분석하여, 5가지 입출력 정보 조건 평가문제에 따른 코드설계 평가 방법이 유효함을 설명하였다.

• Structural Engineering and Mechanics
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• 제43권4호
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• pp.545-560
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• 2012

Design codes provide the minimum requirements for the design of code-compliant structures to ensure the safety of the life and property. As for code-exceeding buildings, the requirements for design are not sufficient and the approval of such structures is vague. In mainland China in recent years, a large number of code-exceeding tall buildings, whether their heights exceed the limit for the respective structure type or the extent of irregularity is violated, have been constructed. Performance-based seismic design (PBSD) approach has been highly recommended and become necessary to demonstrate the performance of code-exceeding tall buildings at least equivalent to code intent of safety. This paper proposes the general methodologies of performance-based seismic analysis and design of code-exceeding tall buildings in Mainland China. The PBSD approach proposed here includes selection of performance objectives, determination of design philosophy, establishment of design criteria for structural components and systems consistent with the desirable and transparent performance objectives, and seismic performance analysis and evaluation through extensive numerical analysis or further experimental study if necessary. The seismic analysis and design of 101-story Shanghai World Financial Center Tower is introduced as a typical engineering example where the PBSD approach is followed. The example demonstrates that the PBSD approach is an appropriate way to control efficiently the seismic damage on the structure and ensure the predictable and safe performance.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2003년도 추계학술발표회
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• pp.93-97
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• 2003

이 인구에서는 안전관리체제(ISM code) 실행지원 모듈개발중 하나인 ISM Code 운영펑가 모들 개발을 위한 기초작 연구를 수정하였다. 특히 ISM Code 운영평가 모듈 개발을 중심으로 AHP의 운영평가 분석과정과 설문지 설계, 운영평가모형 기준의 위계 구조를 징립하였다는 것에 대해 그 의미가 있겠다. 또한 경영과학 분야의 주요 의사결정 하나인 AHP 기법을 운영평가 모듈 개발에 적용을 시도했다는 것에 대해서도 한층 가치가 있겠다.

• Nuclear Engineering and Technology
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• 제53권7호
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• pp.2407-2417
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• 2021

A structural integrity evaluation program (STEP) was developed for the high temperature reactor design evaluation according to the ASME Boiler and Pressure Vessel Code (ASME B&PV), Section III, Rules for Construction of Nuclear Facility Components, Division 5, High Temperature Reactors, Subsection HB. The program computerized HBB-3200 (the design by analysis procedures for primary stress intensities in high temperature services) and Appendix T (HBB-T) (the evaluation procedures for strain, creep and fatigue in high temperature services). For evaluation, the material properties and isochronous curves presented in Section II, Part D and HBB-T were computerized for the candidate materials for high temperature reactors. The program computerized the evaluation procedures and the constants for the weldment. The program can generate stress/temperature time histories of various loads and superimpose them for creep damage evaluation. The program increases the efficiency of high temperature reactor design and eliminates human errors due to hand calculations. Comparisons that verified the evaluation results that used the STEP and the direct calculations that used the Excel confirmed that the STEP can perform complex evaluations in an efficient and reliable way. In particular, fatigue and creep damage assessment results are provided to validate the operating conditions with multiple types of cycles.

• 해양환경안전학회지
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• 제9권2호
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• pp.47-52
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• 2003

이 연구에서는 안전관리체제(ISM Code) 실행지원 모듈개발중 하나인 ISM Code 운영평가 모듈 개발을 위한 기초적 연구를 수행하였다. 특히 ISM Code 운영평가 모듈 개발을 중심으로 AHP의 운영평가 분석과정과 설문지 설계, 운영평가 모형 기준의 위계 구조를 정립하였다는 것에 대해 그 의미가 있겠다. 또한 경영과학 분야의 주요 의사결정 하나인 AHP 기법을 운영평가 모듈 개발에 적용을 시도했다는 것에 대해서도 한층 가치가 있겠다.

• 한국실내디자인학회논문집
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• 제23호
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• pp.74-84
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• 2000

The objective of this study is to develop the evaluation checklist in the public interior spaces for the elderly and the Disabled people. The propriety and intensity of three architectural codes and two standards were examined by comparing with each other and the score was made according to the value. Findings revealed that Korean accessibility code had more mandatory items than others. The essential items to the handicapped's behaviour should be preserved, but less important things could be reconsidered. Also Korean code stressed the vertical moving equipments. But Swedish code had obligatory items in fire refugees facilities, and American code emphasized the corridor and sanitary facilities. Therefore, American and Swedish mandatory items and recommendations which were not addressed in Korean code and guidelines should be considered to apply to ours by investigating a user's problems and adaptation. This research can be used as a basic checklist for public spaces by users as well as guidelines of final design.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2001년도 춘계학술대회논문집
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• pp.967-972
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• 2001

An axial fan design code, called iDesignFan$^{TM}$, was developed. In this code, three major loss models were used to predicted the aerodynamic performance of a fan. The overall sound pressure level, predicted from steady blade loading, is also used as an input parameter from the third loop of the designing process to acquire most silent fan for the given aerodynamic performance parameters. With this kind of inverse design concept used in this code, the period of designing a fan, which has given aerodynamic performance with minimal acoustic noise, is significantly shortened. The experimental results of a prototype fan, designed by this code, showed that aerodynamic and acoustic performance of an axial fan is reasonably well predicted. Thus, one can design/develop an axial fan in a short time by using the code.e.

• 대한조선학회 특별논문집
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• 대한조선학회 2017년도 특별논문집
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• pp.93-104
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• 2017

IMO type C independent tank is one of the cargo containment system specified on IGC code. It is normally adopted for small and medium size liquefied gas carrier's cargo containment system and it can be applied to fuel tank of LNG fueled vessel. This study focuses on rule scantling process and evaluation methods in early design stage of type C independent tank. Actual design results of 22K LPG/Ammonia/VCM carrier's No.2 cargo tank are demonstrated. This paper presents the calculation methods of design acceleration and liquid height for internal design pressure as defined on IGC code. And this paper shows the applied results of classification rules about shell thickness requirement and buckling strength. Additionally this paper deals with evaluation methods of structural strength and cumulative fatigue damage using FE analysis.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 2005년도 학술발표회 논문집
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• pp.292-299
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• 2005

This paper presents evaluation of seismic design code for AASHTO, Eurocode 8, NZS 3101, and ATC-32 and influence of parameter such as confinement steel ratio, axial force ratio, aspect ratio and longitudinal steel ratio. These seismic design code prescribe confinement steel ratio for appropriate seismic performance which is considered various design parameter. But there is doubt that these parameters are considered rationally in seismic design code. The object of this research is rational evaluation of seismic performance by analysis of existing related experimental research. According to this research, most influence parameter of seismic performance is axial force ratio.

• 대한기계학회논문집A
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• 제27권6호
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• pp.930-937
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• 2003

The extension of design life among power plants is increasingly becoming a world-wide trend. Kori #1 unit in Korea is operating two cycle. It has two man-ways for tube inspection in a steam generator which is one of the important components in a nuclear power plant. Especially, stud bolts fur man-way cover have damaged by disassembly and assembly several times and degradation for bolt materials for long term operation. It should be evaluated and compared by ASME Code criteria for integrity evaluation. Integrity evaluation criteria which has been made by the manufacturer is not applied on the stud bolts of nuclear pressure vessels directly because it is controlled by the yield stress of ASME Code. It can apply evaluation criteria through FEM analysis to damaged female threads and to evaluated safety fer helical-coil method which is used according to Code Case-N-496-1. From analysis results, we found .that it is the same results between stress intensity which got from FEM analysis on damaged female threads over 10％ by manufacture integrity criteria and 2／3 yield strength criteria on ASME Code. It was also confirmed that the helical-coil repair method would be safe.