| 基于TIRP法的铝基复合材料均匀性检测 |
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| 引用本文： | 高翌飞,周正干,何方成.基于TIRP法的铝基复合材料均匀性检测[J].北京航空航天大学学报,2009,35(8):1031-1034. |
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| 作者姓名： | 高翌飞 周正干 何方成 |
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| 作者单位： | 北京航空航天大学,机械工程及自动化学院,北京,100191;北京航空材料研究院,无损检测研究室,北京,100095 |
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| 基金项目： | 无损检测技术教育部重点实验室开放基金，北京市教育委员会共建项目专项资助项目 |
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| 摘 要： | 为检测碳化硅颗粒增强铝基复合材料的均匀性,利用与厚度无关声反射板(TIRP,Thickness Independent Reflector Plate)法对材料声速进行成像,排除了材料厚度的影响,提高了检测精度.介绍了TIRP法的基本原理和试验系统的结构,提出了一种基于双次扫描方式的TIRP实时成像方法,进一步提高了精度.利用底面反射回波法、单次扫描TIRP法和双次扫描TIRP法进行了试验,并对成像结果进行了比较,能够看出基于双次扫描的TIRP法可获得更准确清晰的声速图像.最后对误差来源进行了分析,指出了改进的方向.
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| 关 键 词： | 超声声速测量 金属基复合材料 "与厚度无关声反射板"法 |
| 收稿时间： | 2008-06-20 |
Homogeneity testing of aluminum metal matrix composites by TIRP method |
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| Gao Yifei,Zhou Zhenggan,He Fangcheng.Homogeneity testing of aluminum metal matrix composites by TIRP method[J].Journal of Beijing University of Aeronautics and Astronautics,2009,35(8):1031-1034. |
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| Authors: | Gao Yifei Zhou Zhenggan He Fangcheng |
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| Institution: | 1. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Department of Non-Destructive Testing, Beijing Institute of Aeronautical Materials, Beijing 100095, China |
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| Abstract: | In order to evaluate the homogeneity of SiCp reinforced aluminum metal-matrix composites(MMC) fabricated by powder metallurgy,an ultrasonic velocity imaging was carried out with the method of thickness independent reflector plate(TIRP).Accuracy and precision were improved and the thickness was unnecessary in the velocity imaging with TIRP method.Firstly,the purpose of ultrasonic velocity imaging of MMC and basic principle of TIRP were introduced.Secondly,the structure of ultrasonic scan system was described... |
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| Keywords: | ultrasonic velocity measurement metal-matrix composites thickness independent reflector plate (TIRP) |
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