http://hdl.handle.net/11133/60 2012-09 2026-04-17T19:17:48Z http://hdl.handle.net/11133/2105 タイトル: 種々の負荷履歴に関するTiNi形状記憶合金の超弾性変形 著者: 武田, 亘平; 戸伏, 壽昭 抄録: The various subloop behaviors for the superelastic deformation of TiNi shape memory alloy were investigated based on the local temperature variation and the surface observation in the tension test. The results obtained are summarized as bellows. (1) The upper and lower stress plateaus during loading and unloading appear accompanying the progress and reduction of the martensitic transformation (MT) band， respectively. In the case of unloading from the upper stress plateau under low stress rate， strain increases due to the progress of the MT band in the initial stage of unloading. (2) If stress is held constant in the upper stress plateau，creep deformation appears. The creep deformation appears based on the progress of the MT band. The volume fraction of the martensitic phase increases in proportion to an increase in strain. (3) If the transformation strain varies in the stress plateau during loading and unloading， the return point memory appears in the reloading stress-strain curve. The progress and reduction of the MT band start from the boundary of the MT band which has appeared in the preceding process. (4) The angle of boundary of the MT band inclined to the tensile axis is 33° for an aspect ratio of 5 and 42° in the central part of the specimenand 37° in the vicinity of the gripping part for an aspect ratio of 10. 2012-09-26T15:00:00Z http://hdl.handle.net/11133/2106 タイトル: 昆虫羽ばたき時における非定常流体力計測 著者: 北川, 一敬 抄録: Studies of flying insect have focused on low Reynolds number effect for biofluid behavior in unsteady regime. The research of atmospheric flight properties is of interest to explore biofluid mechanism by which process of the unsteady forces，wake and vortex the unsteady motions interact with flapping wing. In the present work，to simultaneous measuring of unsteady aerodynamic forces and flapping motion for flapping small beetle with sampling frequency 10 kHz. The live small beetle generated horizontal force by upstroke and feathering at T.D.C,while that generated maximum vertical force at mid-downstroke. 2012-09-26T15:00:00Z http://hdl.handle.net/11133/2100 タイトル: 国産材を使った新しい木造建築の開発(IVYファスナーの基本性状) 著者: 尾形, 素臣; 堀内, 康久; 松久, 勝也; 村上, 桂秀; 神谷, 勇輝 抄録: The purpose of this study is that the wood is used as structural material factory of large-span steel structure were mainly low-rise warehouses，and stores. Since the conifer grows upright. It can be used as column material is suitable. To be used as material for this beam，the effectiveness of the steel is not enough. The large span low-rise structure pillar for this - wood,beams - a mixture of steel frame structure is valid. Challenge to achieve such a mixed structure the development of wood and steel fasteners are joined to become the most important issue. The first study aimed to clarify the basic properties of the fastener and its development. 2012-09-26T15:00:00Z http://hdl.handle.net/11133/2101 タイトル: 指示詞を考慮したテキスト検索方法の検討 著者: 鈴木, 晋 抄録: A new method is proposed to retrieve Japanese texts. For the method，a text manager makes, from a Japanese text, a formal text in the form that a computer can process easily， considering the function of demonstratives in the Japanese text，beforehand. The method retrieves Japanese texts by using each formal text. Since a formal text gives，to a Japanese text，a closer approximation than key words and tags，the new method can answer queries that can not be done by text retrieval methods using key words and tags. 2012-09-26T15:00:00Z