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한국안전학회(구 한국산업안전학회)> 한국안전학회지(구 산업안전학회지)> 퍼지 기반 다양한 모델을 이용한 회전익 항공기 착륙장치의 위험 우선순위 평가

KCI등재

퍼지 기반 다양한 모델을 이용한 회전익 항공기 착륙장치의 위험 우선순위 평가

Risk Analysis for the Rotorcraft Landing System Using Comparative Models Based on Fuzzy

나성현 ( Seong Hyeon Na ) , 이광은 ( Gwang Eun Lee ) , 구정모 ( Jeong Mo Koo )
  • : 한국안전학회(구 한국산업안전학회)
  • : 한국안전학회지(구 산업안전학회지) 36권2호
  • : 연속간행물
  • : 2021년 04월
  • : 49-57(9pages)

DOI


목차

1. 서 론
2. 방법론
3. 사례 연구
4. 결 론
References

키워드 보기


초록 보기

In the case of military supplies, any potential failure and causes of failures must be considered. This study is aimed at examining the failure modes of a rotorcraft landing system to identify the priority items. Failure mode and effects analysis (FMEA) is applied to the rotorcraft landing system. In general, the FMEA is used to evaluate the reliability in engineering fields. Three elements, specifically, the severity, occurrence, and detectability are used to evaluate the failure modes. The risk priority number (RPN) can be obtained by multiplying the scores or the risk levels pertaining to severity, occurrence, and detectability. In this study, different weights of the three elements are considered for the RPN assessment to implement the FMEA. Furthermore, the FMEA is implemented using a fuzzy rule base, similarity aggregation model (SAM), and grey theory model (GTM) to perform a comparative analysis. The same input data are used for all models to enable a fair comparison. The FMEA is applied to military supplies by considering methodological issues. In general, the fuzzy theory is based on a hypothesis regarding the likelihood of the conversion of the crisp value to the fuzzy input. Fuzzy FMEA is the basic method to obtain the fuzzy RPN. The three elements of the FMEA are used as five linguistic terms. The membership functions as triangular fuzzy sets are the simplest models defined by the three elements. In addition, a fuzzy set is described using a membership function mapping the elements to the intervals 0 and 1. The fuzzy rule base is designed to identify the failure modes according to the expert knowledge. The IF-THEN criterion of the fuzzy rule base is formulated to convert a fuzzy input into a fuzzy output. The total number of rules is 125 in the fuzzy rule base. The SAM expresses the judgment corresponding to the individual experiences of the experts performing FMEA as weights. Implementing the SAM is of significance when operating fuzzy sets regarding the expert opinion and can confirm the concurrence of expert opinion. The GTM can perform defuzzification to obtain a crisp value from a fuzzy membership function and determine the priorities by considering the degree of relation and the form of a matrix and weights for the severity, occurrence, and detectability. The proposed models prioritize the failure modes of the rotorcraft landing system. The conventional FMEA and fuzzy rule base can set the same priorities. SAM and GTM can set different priorities with objectivity through weight setting.

UCI(KEPA)

간행물정보

  • : 공학분야  > 기타(공학)
  • : KCI등재
  • :
  • : 격월
  • : 1738-3803
  • : 2383-9953
  • : 학술지
  • : 연속간행물
  • : 1986-2021
  • : 2956


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발행기관 최신논문
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1전기기관차 주요부품의 수명주기 설정 및 개선방안에 관한 연구

저자 : 이덕구 ( Doek Koo Lee ) , 이희성 ( Hi Sung Lee )

발행기관 : 한국안전학회(구 한국산업안전학회) 간행물 : 한국안전학회지(구 산업안전학회지) 36권 2호 발행 연도 : 2021 페이지 : pp. 1-9 (9 pages)

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(기관인증 필요)

초록보기

The 8200-unit electric locomotive, which is a high-efficiency multipurpose electric locomotive, is a German model, namely BR152 series ES64F, and it is manufactured to suit the operating conditions in Korea. Since 2003, 83 locomotives have been introduced in Korea, and they have been operating in the general railway sector for both passenger and freight transport. Although more than 15 years have passed since their first introduction, owing to the characteristics of vehicles introduced overseas, responding promptly to failures has been difficult owing to problems related to factors such as transfer of technology and procurement of parts for maintenance. Furthermore, there have been difficulties in operating the locomotives on the basis of the manufacturer-recommended time-between-overhaul (TBO) cycle. Therefore, a new TBO should be determined. To support the development of a reliability-based maintenance system, this study conducted a reliability and TBO analysis by using failure data obtained from KOVIS, and future management measures are presented.

2유도가열시스템의 구성부품에 대한 강건설계

저자 : 김두현 ( Doo Hyun Kim ) , 김성철 ( Sung Chul Kim ) , 이종호 ( Jong Ho Lee ) , 강문수 ( Moon Soo Kang ) , 정천기 ( Cheon Kee Jeong )

발행기관 : 한국안전학회(구 한국산업안전학회) 간행물 : 한국안전학회지(구 산업안전학회지) 36권 2호 발행 연도 : 2021 페이지 : pp. 10-17 (8 pages)

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This paper presents the robust design of each component used in the development of an induction bolt heating system for dismantling the high-temperature high-pressure casing heating bolts of turbines in power plants. The induction bolt heating system comprises seven assemblies, namely AC breaker, AC filter, inverter, transformer, work coil, cable, and CT/PT. For each of these assemblies, the various failure modes are identified by the failure mode and effects analysis (FMEA) method, and the causes and effects of these failure modes are presented. In addition, the risk priority numbers are deduced for the individual parts. To ensure robust design, the insulated-gate bipolar transistor (IGBT), switched-mode power supply (SMPS), C/T (adjusting current), capacitor, and coupling are selected. The IGBT is changed to a field-effect transistor (FET) to enhance the voltage applied to the induction heating system, and a dual-safety device is added to the SMPS. For C/T (adjusting current), the turns ratio is adjusted to ensure an appropriate amount of induced current. The capacitor is replaced by a product with heat resistance and durability; further, coupling with a water-resistant structure is improved such that the connecting parts are not easily destroyed. The ground connection is chosen for management priority.

3전문건설업 안전문화 평가에 관한 연구

저자 : 신상연 ( Sang-yeon Shin ) , 백신원 ( Sinwon Paik ) , 정성룡 ( Sung-lyoung Jung )

발행기관 : 한국안전학회(구 한국산업안전학회) 간행물 : 한국안전학회지(구 산업안전학회지) 36권 2호 발행 연도 : 2021 페이지 : pp. 18-25 (8 pages)

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(기관인증 필요)

초록보기

Specialty contractor facilities, which involve a combination of welding and commissioning, face a high risk of serious accidents such as fire, explosion, and suffocation associated with welding work, nitrogen, and argon use. In such facilities, the organizational safety culture has considerable impact on the frequency of accidents. In this study, a safety culture evaluation was conducted on specialty contractors. NOSACQ-50, a standardized survey method on safety culture, was selected as an assessment tool to evaluate the safety culture in specialized construction companies that could not afford to invest heavily in safety. The self-administered questionnaire survey was conducted with 201 workers of four construction companies and the results were analyzed. It was found that in companies with low safety culture, the occurrence of irrationality was 66.0%, while in companies with high safety culture, the occurrence of irrationality was 42.6%. Thus, the difference in the occurrence of irrationality by safety culture was statistically significant. The difference in safety culture level according to the experience of occurrence of irrationality was also significant. It was also found that the higher the belief in safety management authorization, safety responsibilities of managers, worker safety priorities, and safety system effects, the lower the probability of irrationality.

4커튼월 고층 건물 빛 반사에 의한 운전자 눈부심 가능성

저자 : 송형준 ( Hyung-jun Song ) , 서영교 ( Young Kyo Seo )

발행기관 : 한국안전학회(구 한국산업안전학회) 간행물 : 한국안전학회지(구 산업안전학회지) 36권 2호 발행 연도 : 2021 페이지 : pp. 26-31 (6 pages)

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(기관인증 필요)

초록보기

Buildings with glass curtain walls have become popular due to their appealing aesthetics and ability to let in natural light. However, light reflection from the glass surface is unavoidable in these buildings. In particular, the reflection of light from the glass envelope can create afterimage glare, a hazard to nearby drivers and pedestrians. Despite this potential danger, glare from buildings with curtain walls has not been well-studied. Hence, we analyzed the effect of light reflection on glare around a glass-enclosed skyscraper, depending on its surface reflectance. We investigated the potential hazard of glare to drivers using a commercially available software program. The results indicate that the direction of light reflection is distinctive when the incident angle of solar light increases. Moreover, this light reflection is high enough to induce an afterimage to drivers and pedestrians near the building. We found that keeping the reflectance of the building surface under 3% is required to minimize the afterimage hazard to drivers. Consequently, we recommend managing glass reflectance and installing additional traffic safety systems to reduce traffic accidents near curtain wall buildings.

5단순 수명정보를 이용한 IPM의 베이지안 신뢰도 평가 연구

저자 : 조동철 ( Dong Cheol Jo ) , 구정서 ( Jeong Seo Koo )

발행기관 : 한국안전학회(구 한국산업안전학회) 간행물 : 한국안전학회지(구 산업안전학회지) 36권 2호 발행 연도 : 2021 페이지 : pp. 32-38 (7 pages)

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초록보기

This paper suggests an approach to evaluate the reliability of an intelligent power module with information deficiency of prior distribution and the characteristics of censored data through Bayesian statistics. This approach used a prior distribution of Bayesian statistics using the lifetime information provided by the manufacturer and compared and evaluated diffuse prior (vague prior) distributions. To overcome the computational complexity of Bayesian posterior distribution, it was computed with Gibbs sampling in the Monte Carlo simulation method. As a result, the standard deviation of the prior distribution developed using simple information was smaller than that of the posterior distribution calculated with the diffuse prior. In addition, it showed excellent error characteristics on RMSE compared with the Kaplan-Meier method.

6전기공사 현장 안전관리자의 직무자원, 직무요구 및 조직몰입의 영향 연구

저자 : 서현정 ( Hyun Jeong Seo ) , 김남균 ( Nam Kyun Kim ) , 손민지 ( Minjie Son ) , 홍아정 ( Ah-jeong Hong )

발행기관 : 한국안전학회(구 한국산업안전학회) 간행물 : 한국안전학회지(구 산업안전학회지) 36권 2호 발행 연도 : 2021 페이지 : pp. 39-48 (10 pages)

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초록보기

This study was conducted to suggest a direction in which safety managers can concentrate on industrial accident prevention and safety management for the organization. The job resources of safety managers were divided into organizational and individual levels, and the magnitude of the impact on organizational commitment was compared. Furthermore, job demands were classified into environmental risk factors and personal psychological factors to confirm their effect on organizational commitment. The moderating effect of job resources and sub-factors of the variable in the relationship between job demands and organizational commitment was verified. In this study, a questionnaire survey was conducted on 193 safety managers in the domestic electric construction business, data were collected, and a questionnaire of 180 people was used for the final analysis. Based on the results, organization-level resources among the sub-factors of job resources and individual psychological factors among the sub-factors of job demand had a more significant influence on organizational commitment. In the relationship between job resources and organizational commitment, the moderating effect of job demand was verified, confirming that job demand had a negative moderating effect. Individual psychological factors had a modulating effect, whereas environmental factors did not. The significance, implications, and limitations of this study are discussed based on the research results.

7퍼지 기반 다양한 모델을 이용한 회전익 항공기 착륙장치의 위험 우선순위 평가

저자 : 나성현 ( Seong Hyeon Na ) , 이광은 ( Gwang Eun Lee ) , 구정모 ( Jeong Mo Koo )

발행기관 : 한국안전학회(구 한국산업안전학회) 간행물 : 한국안전학회지(구 산업안전학회지) 36권 2호 발행 연도 : 2021 페이지 : pp. 49-57 (9 pages)

다운로드

(기관인증 필요)

초록보기

In the case of military supplies, any potential failure and causes of failures must be considered. This study is aimed at examining the failure modes of a rotorcraft landing system to identify the priority items. Failure mode and effects analysis (FMEA) is applied to the rotorcraft landing system. In general, the FMEA is used to evaluate the reliability in engineering fields. Three elements, specifically, the severity, occurrence, and detectability are used to evaluate the failure modes. The risk priority number (RPN) can be obtained by multiplying the scores or the risk levels pertaining to severity, occurrence, and detectability. In this study, different weights of the three elements are considered for the RPN assessment to implement the FMEA. Furthermore, the FMEA is implemented using a fuzzy rule base, similarity aggregation model (SAM), and grey theory model (GTM) to perform a comparative analysis. The same input data are used for all models to enable a fair comparison. The FMEA is applied to military supplies by considering methodological issues. In general, the fuzzy theory is based on a hypothesis regarding the likelihood of the conversion of the crisp value to the fuzzy input. Fuzzy FMEA is the basic method to obtain the fuzzy RPN. The three elements of the FMEA are used as five linguistic terms. The membership functions as triangular fuzzy sets are the simplest models defined by the three elements. In addition, a fuzzy set is described using a membership function mapping the elements to the intervals 0 and 1. The fuzzy rule base is designed to identify the failure modes according to the expert knowledge. The IF-THEN criterion of the fuzzy rule base is formulated to convert a fuzzy input into a fuzzy output. The total number of rules is 125 in the fuzzy rule base. The SAM expresses the judgment corresponding to the individual experiences of the experts performing FMEA as weights. Implementing the SAM is of significance when operating fuzzy sets regarding the expert opinion and can confirm the concurrence of expert opinion. The GTM can perform defuzzification to obtain a crisp value from a fuzzy membership function and determine the priorities by considering the degree of relation and the form of a matrix and weights for the severity, occurrence, and detectability. The proposed models prioritize the failure modes of the rotorcraft landing system. The conventional FMEA and fuzzy rule base can set the same priorities. SAM and GTM can set different priorities with objectivity through weight setting.

8한국 산업계에서 사고조사 수행 시 사고조사자의 관점에 관한 연구

저자 : 권재범 ( Jae Beom Kwon ) , 권영국 ( Young Guk Kwon )

발행기관 : 한국안전학회(구 한국산업안전학회) 간행물 : 한국안전학회지(구 산업안전학회지) 36권 2호 발행 연도 : 2021 페이지 : pp. 58-67 (10 pages)

다운로드

(기관인증 필요)

초록보기

Incident investigation is regarded as a means to improve safety performance. For the prevention of industrial accidents, measures such as providing safety education, enhancing management interest and participation, establishing a safety management system, and conducting inspection of the work site are necessary. In particular, accident investigation activities, which are an important element of safety management, help to prevent similar accidents, thereby minimizing damage and enhancing work safety. They are critical for understanding business-related incidents and the vulnerabilities and opportunities associated with them. Therefore, it is clear that accident investigation activities are important for accident prevention. The primary focus of many incident investigation processes is on identifying the cause of an event. While considerable research has been conducted on potential accident investigation tools there has been little research on including the views and experiences of practitioners in the accident investigation process. In this study, a questionnaire survey was conducted among safety managers in the domestic manufacturing/construction industry to understand the practice of accident investigation. The investigation pertained to companies' accident investigation systems, the competence of investigators, and the identification and recommendations of the cause of accidents. From the analysis results of accident investigations, investigators' competence, the difficulty level of investigations, and the root causes of accidents were identified from the viewpoint of the participants of the accident investigations. In particular, the development of standardized and simple accident investigation methods and their dissemination to companies were found to be necessary for activating the root cause of accidents. Based on this, it can be used as basic data for the development of root cause analysis investigation techniques that are easily applicable to organizations.

9국방 안전관리시스템 개선을 위한 주요 외국군 사례분석 연구

저자 : 안재현 ( Jae Hyun An ) , 박찬영 ( Chan Young Park ) , 박상훈 ( Sang Hoon Park ) , 윤홍식 ( Hong Sik Yoon )

발행기관 : 한국안전학회(구 한국산업안전학회) 간행물 : 한국안전학회지(구 산업안전학회지) 36권 2호 발행 연도 : 2021 페이지 : pp. 68-79 (12 pages)

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(기관인증 필요)

초록보기

Department of Defense, Republic of Korea has put in significant efforts towards safety over the years by developing defense safety management systems, such as establishing safety management organizations and enacting laws and regulations. Therefore, the number of casualties due to military activities has been reduced dramatically. However, many errors and problems are present in the safety management system (SMS) owing to a lack of proper SMS. That brings inefficiency and discontinuity in SMS. Hence, typical phenomena such as lack of safety management professionals and reactive safety management activities have not been properly corrected. This study reviews various academic papers on the SMS and research reports of major foreign institutions to redefine the concept and components of the defense safety management system to ultimately suggest improvement in the R.O.K defense safety management system. Additionally, the safety management system of the U.S. and British forces, considered to be the leading safety management system, were analyzed and compared to R.O.K defense SMS to derive their implications.

10개인 및 사고원인 특성이 재난안전인식에 미치는 영향분석

저자 : 오후 ( Hoo Oh ) , 임동균 ( Dong-kyun Yim )

발행기관 : 한국안전학회(구 한국산업안전학회) 간행물 : 한국안전학회지(구 산업안전학회지) 36권 2호 발행 연도 : 2021 페이지 : pp. 80-86 (7 pages)

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(기관인증 필요)

초록보기

The purpose of this study is to diagnose the level of disaster safety perception (disaster safety importance, accident possibility, personal safety, and regional safety) of local residents, and to analyze the impact of individual and accident cause characteristics. The analysis method used multiple regression analysis, and the main analysis results are as follows. First, disaster safety importance and accident possibility were higher as residents who had experience in safety education and were willing to visit the safety experience center in the province. Second, disaster safety importance was higher as the cause of the accident was the lack of response 119 and police. And accident possibility was higher as the cause of the accident was the lack of prior treatment by the state and local governments. Third, personal safety and regional safety were higher for men, and especially personal safety was lower as residents with children. The results of this study can be used as basic data for establishing regional customized disaster safety policies based on the perception of local residents, who are policy consumers.

12
주제별 간행물
간행물명 수록권호

KCI등재

한국안전학회지(구 산업안전학회지)
36권 3호 ~ 36권 3호

KCI후보

한국화상학회지
27권 1호 ~ 27권 1호

KCI등재

공학기술논문지
14권 2호 ~ 14권 2호

KCI등재

한국산업융합학회 논문집
24권 3호 ~ 24권 3호

KCI등재

감성과학
24권 2호 ~ 24권 2호

KCI등재 SCI SCOUPUS

KSII Transactions on Internet and Information Systems (TIIS)
15권 6호 ~ 15권 6호

KCI등재

인터넷정보학회논문지
22권 3호 ~ 22권 3호

KCI등재 SCI SCOUPUS

KSII Transactions on Internet and Information Systems (TIIS)
15권 5호 ~ 15권 5호

KCI등재 SCI SCOUPUS

KSII Transactions on Internet and Information Systems (TIIS)
15권 4호 ~ 15권 4호

KCI등재

인터넷정보학회논문지
22권 2호 ~ 22권 2호

KCI등재

한국안전학회지(구 산업안전학회지)
36권 2호 ~ 36권 2호

KCI등재

한국산업융합학회 논문집
24권 2호 ~ 24권 2호

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한국화상학회지
26권 4호 ~ 26권 4호

KCI등재

복합신소재구조학회논문집
12권 2호 ~ 12권 2호

복합신소재구조학회지
12권 1호 ~ 12권 1호

한국국방기술학회 논문지
1권 1호 ~ 2권 4호

KCI등재

감성과학
24권 1호 ~ 24권 1호

KCI등재 SCI SCOUPUS

KSII Transactions on Internet and Information Systems (TIIS)
15권 3호 ~ 15권 3호

KCI등재

공학기술논문지
14권 1호 ~ 14권 1호

한국전과정평가학회지
21권 1호 ~ 21권 1호
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