北京航空航天大学学报 ›› 2017, Vol. 43 ›› Issue (3): 417-423.doi: 10.13700/j.bh.1001-5965.2016.0206

• 论文 • 上一篇    下一篇

SiCp/Al复合材料增强体分布均匀性超声成像方法

孙广开1,2, 周正干1,2,3   

  1. 1. 南昌航空大学 无损检测技术教育部重点实验室, 南昌 330063;;
    2. 北京航空航天大学 机械工程及自动化学院, 北京 10008;
    3. 北京航空航天大学 先进航空发动机协同创新中心, 北京 100083
  • 收稿日期:2016-03-16 出版日期:2017-03-20 发布日期:2016-06-29
  • 通讯作者: 周正干,E-mail:zzhenggan@buaa.edu.cn E-mail:zzhenggan@buaa.edu.cn
  • 作者简介:孙广开,男,博士。主要研究方向:无损检测与计算机测控技术。;周正干,男,博士,教授。主要研究方向:超声无损检测技术。
  • 基金资助:
    南昌航空大学无损检测技术教育部重点实验室开放基金(ZD200829009)

Ultrasonic imaging method for distribution uniformity of reinforcement in SiCp/Al composites

SUN Guangkai1,2, ZHOU Zhenggan1,2,3   

  1. 1. Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang 330063, China;
    2. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 10008;
    3. The Collaborative Innovation Center for Advanced Aero-Engine (CICAAE), Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2016-03-16 Online:2017-03-20 Published:2016-06-29

摘要: 为提高SiCp/Al复合材料均匀性超声评价准确度,研究基于超声衰减及声速变化量的SiCp颗粒分布均匀性成像方法。制备不同SiCp体积分数的SiCp/Al复合材料试样;采用水浸式超声波系统对试样进行超声衰减成像,分析超声衰减量与SiCp体积分数关系;实验分析声速变化与SiCp体积分数的定量关系并对试样进行声速成像;采用金相法观测试样细观特征,分析不同SiCp体积分数下试样的材料均匀性变化,对比分析得出超声衰减和声速成像法的准确度和适用范围。研究结果表明,超声衰减成像方法适用于SiCp颗粒分布定性分析,基于声速变化量成像方法可定量分析SiCp颗粒分布,在材料均匀性评价方面具有更高准确度。

关键词: 航空航天, 金属基复合材料, SiCp颗粒, 材料均匀性, 超声成像

Abstract: In order to improve the accuracy for ultrasonic characterization of the uniformity of SiCp/Al composites, the imaging methods based on ultrasonic attenuation and velocity for the distribution uniformity of SiCp particles were studied. SiCp/Al specimens with different volume fractions of SiCp were prepared. Ultrasonic attenuation imaging for the specimens was carried out by water immersion ultrasonic system, and the relation of ultrasonic attenuation with SiCp volume fraction was analyzed. The quantitative relation of ultrasonic velocity with SiCp volume fraction was analyzed experimentally, and ultrasonic velocity imaging of the specimens was carried out. Metallographic method was used to observe the micro characteristics of the specimens, and the material uniformity of the specimens with different SiCp volume fractions was analyzed. The applicability and accuracy of the imaging methods based on ultrasonic attenuation and velocity were comparatively analyzed. The results present that the ultrasonic attenuation imaging method is suitable for the basic analysis of the distribution of SiCp particles, and the ultrasonic velocity imaging method is more accurate and suitable for the quantitative analysis of SiCp particle distribution.

Key words: aerospace, metal matrix composite, SiCp particle, material uniformity, ultrasonic imaging

中图分类号: 


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