http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
외부하중에 의한 태양추적장치(Tracker)의 구조해석
이지혜(J. H. Lee),김일수(I. S. Kim),장병석(B. S. Jang),문성호(S. H. Moon),홍석훈(S. H. Hong),김지선(J. S. Kim),나현호(H. H. Na) 한국생산제조학회 2010 한국공작기계학회 추계학술대회논문집 Vol.2010 No.-
Recently, Finding energy sources to satisfy the world's growing demand is one of society's foremost challenges for the next half-century. Solar energy is clean, renewable and abundant in every part of our world; the energy needs and costs have increased in recent years. A sun tracking system was deployed for enhancing the solar still productivity. In this study, structural analysis of solar tracking system (Tracker) by external loads using finite element method (FEM) proposes the verification of numerical analysis system.
포장노면 종류에 따른 타이어/노면 마찰 소음의 실험적 평가
김진형(Kim, J.H.),최태묵(Choi, T.M.),문성호(Moon, S.H.),서영국(Seo, Y.G.),박준석(Park, J.S.),도천수(Do, C.S.),조대승(Cho, D.S.) 한국소음진동공학회 2006 한국소음진동공학회 논문집 Vol.16 No.10
In this paper, we present noise measurement results of 8 vehicles. The measurement was done by a close proximity method attaching surface microphones on the test vehicle. For the 9 road surface types constructed at Korean highway test road, the vehicles were tested from 50 to 120 km/h at the interval of 10 km/h in normal steady state and inertia cruising conditions. Using the results, we evaluate and discuss the effect of vehicle noise generation depending on the different conditions for vehicle type, speed, road surface and loading condition, especially focused on friction noise between tyre and road surface.
CPX 및 Pass-by 계측을 이용한 단독 주행 차량의 음향파워 평가 방법에 관한 연구
최태묵(Choi, T.M.),문성호(Moon, S.H.),서영국(Seo, Y.G.),김진형(Kim, J.H.),김병희(Kim, B.H.),배효준(Bae, H.J.),지우진(Ji, W.J.),조대승(Cho, D.S.) 한국소음진동공학회 2006 한국소음진동공학회 논문집 Vol.16 No.11
This paper presents a novel method to determine sound power level(PWL) emitted by a travelling vehicle for road traffic noise simulation. The PWL is evaluated by the equivalent sound pressure level (SPL) measured by close proximity method and the sound power correction factor derived from the maximum SPL measured by pass-by method and the propagation attenuation of vehicle noise during the pass-by measurement. Using the method, we derive the empirical formula for PWL estimation in 1/1-octave and overall frequency bands for 8 vehicles (automobile, SUV, small truck, large bus, trailer, 3 dump trucks) tested at two road surfaces (dense graded asphalt, 30mm transverse tinning concrete) of Korean highway test road. The suggested approach, if securing sufficient data to represent the acoustic characteristics of all vehicle types, has il strong merit to be able to evaluate sound power levels for any combination of vehicle categories and traffic volumes.