http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김성진(S-J Kim),최준영(J-Y Choi),공지현(J-H Kong),문종혁(J-H Moon),이세훈(S-H Lee),심원현(W-H Shim),이은혜(E-H Lee),이은주(E-J Lee),이해석(H-S Lee) 한국태양에너지학회 2011 한국태양에너지학회 학술대회논문집 Vol.2011 No.11
Although PV module manufacturing and its structure are simple,the semi-permanent products can be used out doors for more than twenty years.Therefore it is need to choose proper materials and optimize manufacturing process. This paper suggest that factors of degradation need to be studied to achieve a more understanding of PV module Degradation rates and materia lfailure. Nowadays durability of the PV Module is very important to sustain output safety for obtaining reliability. This paper is about the experiment that soldering uniformity of soldering process and to make least void from soldering process. From This study soldering flux residue and soldering method is main factor to form void blocked soldering uniformity and by using this.
40 mm 화포용 베플형 소음기와 천공형 소음기에 대한 수치해석적 비교 연구
강태엽(T. Y. Kang),김상민(S. M. Kim),이해석(H. S. Lee),나태흠(T. H. Na),한태호(T. H. Han) 한국전산유체공학회 2012 한국전산유체공학회 학술대회논문집 Vol.2012 No.11
In this study, flow characteristics of baffle type and perforated type silencers for 40 mm caliber cannons were numerically investigated and noise attenuation effects provided by each silencer were compared. Numerical analysis was conducted by using a commercial CFD code, FLUENT. To analyze complex blast flow fields, the Spalart-Allmaras model was applied under 2 dimensional and axisymmetric conditions. In result, 6.4 % reduction in sound, pressure level(SPL) was obtained by the baffle type silencer, 4.3 % by the perforated type on average.