QQ客服 官方微博 反馈留言

浏览/检索结果: 共5条，第1-5条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Response of Non-homogeneous Saturated Soils and Free-field to Incident Plane SH Wave 会议论文 作者:  Zhou, Fengxi;  Song, Ruixia 收藏  |  浏览/下载：10/0  |  提交时间：2019/11/15 Non-homogeneous Saturated Soil  SH Wave  Dynamic Response  Reflection and Transmission   Response of non-homogeneous saturated soils and free-field to incident plane SH wave 会议论文 Haikou, China, May 24, 2014 - May 25, 2014 作者:  Zhou, Feng Xi;  Song, Rui Xia 收藏  |  浏览/下载：30/0  |  提交时间：2020/11/15 Dynamic response  Shear waves  Exact dynamic stiffness  Ground displacement  Physical and mechanical properties  Reflection and transmission  Reflection and transmission coefficients  Saturated soils  SH wave  Vector decompositions   Design and simulation of CMOS star sensor lens with large relative aperture and wide field (EI CONFERENCE) 会议论文 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China Zhong X.; Jin G. 收藏  |  浏览/下载：57/0  |  提交时间：2013/03/25 A 50mm focal length  F/1.25  Gaussian type optical system is designed in this paper  which has 20field of view. Actual star image adding optical cross-talk effect of CMOS(Complementary Metal Oxide Semiconductor)  detector is simulated by non-sequential ray tracing in ZEMAX optical design and analysis software to evaluate its performance. The distortion relative to image spot centriod is introduced and calculated by simulated star images  which is less than 0.03% of lens in this paper. Thermal adaptability is discussed by opt-mechanic thermal analysis  which shows the RMS spot radius of marginal filed changes less than 0.7m under 10C temperature gradient  and changes less than 1m during homogeneous temperature changing from 40C to 40C. The results of analyses and simulations show the design of this lens can achieve the requirement of high precision CMOS star sensor well. 2011 IEEE.   Characterization of laser cladding calcium phosphate coatings on titanium substrate 会议论文 Beijing, China, April 16, 2008 - April 18, 2008 作者:  Li, Xiukun;  Zheng, Min;  Fan, Ding;  Zhang, Jianbin 收藏  |  浏览/下载：15/0  |  提交时间：2020/11/15 Aluminum alloys  Aluminum coatings  Calcium phosphate  Laser cladding  Microhardness  Morphology  Phase composition  Scanning electron microscopy  Ternary alloys  Titanium alloys  Alloy substrates  Coatings structure  Electron probe  Element distribution  Gradient bioceramic coatings  Microhardness distribution  Microhardness tests  Titanium substrates   Crack Tip Fields with Strain Gradient Effects 会议论文 International Conference on Micro & Nano Systems 2002(ICMNS 2002), Kunming, China, 2002-8-1 作者:  Chen SH(陈少华);  Wang ZQ(王自强) 收藏  |  浏览/下载：7/0  |  提交时间：2014/02/14 Strain gradient effects  fracture  crack tip field