Repository of NNCT (Nagano National College of Technology)
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有孔LP鋼板の極限強度解析
Get PDFapplication/pdfPurpose in study is to investigate mechanical behavior for existence aperture LP stiffened plates under pure axial compression. I carry out numerical value simulation in some models that changed a plate thickness difference and an aperture diameter this time. Then I want to offer the data that is ultimate behavior of existence aperture LP stiffened plates under pure axial compression.departmental bulletin pape
長野駅周辺自転車駐輪場の利用実態に関する調査分析
Get PDFapplication/pdfThe appropriate placement and parking capacity of the parking lot are important to promote the use of the bicycle. In addition, safety and the comfort before accessing the bicycle parking lot are important. In this study, we carried out a bicycle parking lot and the use fact-finding of the bicycle for bicycle parking lots established around Nagano Station. And we clarified the use actual situation such as the bicycles from the departure place to the destination. In addition, we clarified satisfaction and the refinement for the bicycle parking lot, a problem of the access.departmental bulletin pape
自動車用ホットスタンプ材のスポット溶接性
Get PDFapplication/pdfThe effect of spot welding condition on spot weldability in ultra high strength 0.23C-0.19Si-1.29Mn-0.024Ti-0.21Cr-0.003B (mass%) hot-stamping (22MnB5) steel sheet was investigated for automotive applications. The spot weldability was evaluated using tensile shear test and cross tension test. The larger spot welding current, the larger nugget diameter and the higher tensile shear force (TSS) and the higher cross tension force (CTS).departmental bulletin pape
暖房時における教室の温度変化
Get PDFThis paper described the temperature change of the homeroom in Nagano National College of Technology when used as heating air conditioner of the gas heat pump system using city gas. Air conditioner was introduced in the homeroom in order to match the renovation of the college fiscal year 2007. The key points of this paper ware as follows: (1) when the homeroom was heated with the preset temperature of 20℃, the temperature of the homeroom was found to reach the preset temperature in about 1 hour after the start of the heating; (2) by using an electric fan together during heating, the temperature near the studying desk became higher about 2℃ than the preset temperature of an air conditioner.departmental bulletin pape
太陽観察グラスの透過率測定Ⅱ
Get PDFapplication/pdfWe measured the transmittance of filters and the substitutes for direct observation of the sun, from 2009 to 2012. In this paper, we report the results of the measurements in detail. This paper gives fundamental data for observing solar eclipses safely.departmental bulletin pape
