통합 검색 | Korea Science

오민석;원종식;정윤교
- 한국정밀공학회:학술대회논문집
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- 한국정밀공학회 1995년도 추계학술대회 논문집
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- pp.259-264
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- 1995
Recently, in order to achieve high flexibilty, monitoring and control strategies of a new type have been developed. This paper investigates the fesability of using scoustic emission signal analysis for the detection of built-up edge during machining. Results for maching SM45C steel show that the presence of a built-up edge can significantil affect the generation of acoustic emission in metal cutting. When the cutting speed comes to the conditions conducive to development of built-up edge, it is shown that the slope of curve-fitted AErms signal undergoes a change. The fesability of utilizing AErms in built-up edge sensing is sugested.
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원종식;오민석;정윤교
- 한국정밀공학회:학술대회논문집
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- 한국정밀공학회 1996년도 추계학술대회 논문집
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- pp.200-205
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- 1996
Recently, in order to achieve high flexibility of manufacture, monitoring and control strategies cf a new type have been developed. Since the generation of built-up edge on the cutting tool damages the surface finish of the workpiece, the monitoring system of built-up edge is an important process monitoring. In this study, the analyzing methods of cutting force signal to detect the built-up edge during cutting process are described. The cutting force signals are analyzed using the mean, standard deviation and mean to standard deviation of this cutting signals. We can obtain the guide to detect the built-up edge during turning process.
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오민석;원종식;정윤교
- 한국정밀공학회지
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- 제16권3호통권96호
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- pp.18-24
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- 1999
ThisPaper investigates the feasibility of using acoustic emission signal analysis for the detection of built-up edge during machining. Experiments were conducted on a CNC-lathe using conventional carbide insert tools under various cutting conditions. The cutting forces were also measured for comparisons. Experimental evidence is presented which indicates that the presence of a built-up edge can significantly affect the generation of acoustic emission in metal cutting. It is shown that under conditions in which a built-up edge is generated, the variation of $AE_{rms}$ signal with cutting speed can be quite different from the generally accepted linear, monotonic increase as previously reported. The feasibility of utilizing $AE_{rms}$ in built-up edge sensing is suggested.
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원종식;오민석;정윤교
- 한국정밀공학회지
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- 제14권7호
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- pp.67-72
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- 1997
Recently, in order to achieve high flexibility of manufacture, monitoring and control strategies of a new type have been developed. Since the generation of built-up edge on the cutting tool damages the surface finish of the workpiece, the monitoring system of built-up edge is an important process monitoring. In this study, the analyzing methods of cutting force signal to detect the built-up edge during cutting process are described. The cutting force signals are analyzed using the mean, standard deviation and mean to standard deviation of this cutting signals. We can obtain the guide to detect the built-up edge during turning process.
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서정필
- 건축사
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- 통권636호
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- pp.24-27
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- 2022
월간 <건축사>가 지난 3월 21일 함인선 광주광역시 총괄건축가를 만났다. 그는 인터뷰를 통해 의무가입 시대를 맞아 건축사 윤리 확립을 위한 윤리강령 제정, 신뢰 기반의 공공건축 설계공모 심사 도입 및 건축 인허가 제도에 대한 평소 생각을 전했다. 또 건축계가 의무가입 건축사법 시행과 새 정부 출범 등 변화의 시기를 겪는 상황에서 좋은 건축을 위해서는 건축사에 대한 사회적 신뢰를 더욱 두텁게 해야 한다는 뜻을 전했으며, 공공건축 설계공모에 대해선 명목적 공정성에 집착하기보다 심사위원 재량을 강화하고 문제가 생길 경우 책임을 확실히 묻는 '신뢰 기반 심사제도' 도입 필요성을 강조했다. 또한 현행 건축심의 관련 건축물의 성능과 디자인에 관련된 사항은 건축사 재량에 맡기고 공공성에 대한 것을 심의 대상으로 삼는 방향으로 제도가 개선돼야 한다는 생각도 밝혔다. 함인선 총괄건축가의 저서로는 '구조의 구조', '정의와 비용 그리고 도시와 건축', '건물이 무너지는 21가지 이유' 등이 있다.
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