http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김후식(Kim Hu-Shik),김재훈(Kim Jae-Hoon),이영신(Lee Young-Shin),박병준(Park Byung-Jun),조정미(Cho Jeong-Mi) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-
Glass/phenolic composite laminates have been used in the field of non-flammable light rail transit and their applications have expanded more widely. Low velocity impact tests have been used to evalute the effect of temperature and acceleration aging on low velocity impact response of phenolic matrix composites reinforced with woven E-glass fabric. The damage of matrix cracking and delamination are suddenly reduced the compressive strength after impact. The damage area increases with increasing temperature and impact energy. UT C-scan is used to determine damage areas by impact loading. Therefore, all this observations indicate reduced impact damage resistance and damage tolerance of the laminates at elevated temperature.
Glass/phenol 복합적층판의 저속충격 특성-온도의 영향
김후식(Hu Shik Kim),김재훈(Jae Hoon Kim),이영신(Young Sin Lee),한영욱(Young Uk Han),박병준(Byoung Joon Park),안병욱(Byoung Wook An) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
In this study. low velocity impact tests and compression-after-impact(CAI) tests have been used to evaluate the effect of temperature on the low velocity impact characteristics of phenol-matrix composites reinforced with woven glass-fabric. Drop weight(low velocity) impact causes three principle types of damage in laminates. namely matrix cracking, delamin-ation, and fiber breakage, which together can seriously degrade residual compressive strength in laminates. The distribution of impact damage for the various temperature. can be determined from ultrasonic C-scan images. and the shape of damage is approximately elliptical. The damage area increases with increasing temperature and impact energy. All these observation indicate reduced impact damage tolerance of the laminates at evaluted temperature.
Scaffold 설치에 따른 보일러 Slope Tube에 미치는 영향평가
이상래(Lee sang-rae),백수곤(Baek soo-gon),김후식(Kim hu-shik),김재훈(Kim jae-hoon),김명성(Kim myung-sung),정상희(Jung sang-hee),김용기(Kim young-ki) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
For evaluate of contact area about spiral wall tube and constructed Scaffold for maintenance of Boiler inside. The recently, size of the general scaffold is 16m X 16m X 41m, and the weight of the' scaffold is 70 Ton for 500㎿ class thermal power plant boiler. The scaffold is give the force to spiral wall tube about 100 Ton.(add live load and dead load), and then It cause deformation of spiral wall tube. So this paper is study at course of a thing of this deformation, from structural analysis. And solve the stress of spiral wall tube in time of constructed scaffold, find out the relation between spiral wall tube and Scaffold.