期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
纳米铝晶粒生长的抑制方法(英文) 被引量:1
1
作者 Gowoon JEONG jooyoung park +1 位作者 Singon KANG Hyunjoo CHOI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第S1期112-118,共7页
对纳米铝、铝合金和铝基化合物的晶粒生长行为进行了比较。首先,采用球磨粉末的烧结方法制备纳米铝。然后,添加能在晶界形成热稳定二次相和阻碍晶界运动的元素,如Mn、Zr和混合稀土元素,形成纳米铝合金。最后,因为多壁碳纳米管有望在晶... 对纳米铝、铝合金和铝基化合物的晶粒生长行为进行了比较。首先,采用球磨粉末的烧结方法制备纳米铝。然后,添加能在晶界形成热稳定二次相和阻碍晶界运动的元素,如Mn、Zr和混合稀土元素,形成纳米铝合金。最后,因为多壁碳纳米管有望在晶界处抑制晶粒生长,因此,制备含有多壁碳纳米管的纳米铝复合材料。将3种样品在550 oC,5 d下进行退火处理,比较了退火时间对样品维氏硬度的影响。结果表明,采用多壁碳纳米管阻碍纳米铝晶粒生长的方法最为有效。 展开更多
关键词 铝(Al) 碳纳米管(CNTs) 复合材料 纳米晶 晶粒生长
下载PDF
Performance comparison of leg detection methods using laser range finder
2
作者 Yoonchang Sung Hoyeon Kim +2 位作者 Yoonkyu Yoo jooyoung park Woojin Chung 《Journal of Measurement Science and Instrumentation》 CAS 2012年第3期278-280,共3页
Human interaction becomes an important issue in the field of mobile robotics.To achieve human-friendly navigation,the robot needs to recognize human on cluttered backgrounds,and this can be fulfilled by the detection ... Human interaction becomes an important issue in the field of mobile robotics.To achieve human-friendly navigation,the robot needs to recognize human on cluttered backgrounds,and this can be fulfilled by the detection of human legs.The detection of human legs is advantageous because it enables detecting environmental obstacles at such heights.In this paper,we compared the performance of an algorithm using a single laser range finder(LRF)proposed in Ref.[1] with that of well-known feature extraction approaches-bounding box and circle fitting proposed in Ref.[2] by using the same laser scanned image. 展开更多
关键词 human-robot interaction leg detection feature extraction
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部