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박형필(H. P. Park),차백순(B. S. Cha),전용준(Y. J. Jeon),황병욱(B. W. Hwang),정상현(S. H. Jung),이광영(K. Y. Lee),황성일(S. I. Hwang) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
In general, precision plastic lens mold applied branched runner system of H-Type. However, filling imbalance of the mult-cavity was occurred by asymmetrical shear distribution. For this reason, the accuracy and the quality of the lens decrease. In this study, the lens mold with radial runner system of X-type lens was applied to improving the quality of lens parts. We carried out CAE analysis of lens mold with branched runner system of H-Type and radial runner system of X-type and we examined the mold temperature, temperature distribution in runner system and shrinkage distribution.
슬롯환기구가 설치된 실내에서 공기의 유동특성에 관한 연구
정한식,정효민,이광영 慶尙大學校 1996 論文集 Vol.35 No.2
The study of indoor air flow characteristics for slot ventilator has been numerically investigated using a finite volume method. The parameters were studied here in air, 0 Re 2000, 10³ Gr 10 and the one outlet. The results of the flow patterns and isotherms have been represnted for various parameters. The regime map of indoor air convection was proposed caaording to Nuss딧 number and Grashof number.
두개강내에 전이된 난소 미분화세포종(Ovarian Dysgerminoma) : 1예 보고 Case Report
이광영,이승수,문명선 대한신경외과학회 1981 Journal of Korean neurosurgical society Vol.10 No.1
We experienced a case of metastatic intracranial dysgerminoma on the midline of the parieto-occipital bone and epidural space involving the posterior fossa, which was early metastasis intracranially. A 17 years old female had been admitted because of protruded mass on the midline of the parieto-occipital region for about 1 year, sudden severe headache, vomiting, and drowsy state. Simple skull x-ray films had revealed hyperostosis with sun burst appearence, and vertebral angiography had showed a well visualized posterior meningeal artery, which had been outlined the epidural mass on the parieto-occipital region invading posterior fossa. Brain C.T. had revealed isodensity in preinfusion state, but increased density on enhancement. We had operated the tumor by conventional craniectomy, and radiotherapy had been followed on the craniocervical region. The radiotherapy had been very effective. Biopsy from the intracrania1 tumor had revealed a germinoma. But about 10 months later following discharge from the hospital, the patient had a huge abdominal mass, and the mass revealed an ovarian dysgerminoma microscopically, which was identified the same structure as germinoma had. We concluded that the tumor mass was metastatic intracranial dysgerminoma from the ovarian dysgerminoma in the case.
GFRP 접착한 알루미늄 판재의 피로균열 저항성에 관한 연구
박원조,이광영 慶尙大學校 1996 論文集 Vol.35 No.2
The paper presents fatigue crack growth in aluminum 2024-T3 alloy plate bonded with GFRP. The fatigue crack resistance is also studied experimentally. It has been shown that the decrease in fatigue crack growth rate is based mainly on the crack bridging effect due to the formation of the bridging zoon alony the delaminated interface.