编磬振模及声场的近场声全息模拟研究  

SIMULATION RESEARCH ON VIBRATION MODE AND RADIATION FIELD OF CHIME STONES USING NEARFIELD ACOUSTIC HOLOGRAPHY

作　　者：张德俊[1] 程建政[1] 朱念秋 

机构地区：[1]中国科学院武汉物理所,武汉430071

出　　处：《无损检测》1997年第11期308-310,共3页Nondestructive Testing

基　　金：国家自然科学基金;声场声信息国家重点实验室资助课题

摘　　要：运用近场声全息检测技术,对按编磬形状制作的模拟“钢磬”进行了实验研究,首次获得其在154和367Hz两种频率下的振模及空间矢量声强分布,表明这种新的成象技术是研究低频振动体及其声场的有效手段。The experimental research for a steel simulant designed by the shape of chime stones is carried out by using nearfield acoustic holographic testing technique. The vibration mode and vector intensity at frequency of 154 and 367Hz are obtained for the first time. The results show that this new imaging technique can be used as an effective means to study low frequency vibrating objects and their radiation fields.

关 键 词：近场声全息 编磬振模 模拟 声检测 辐射物 

分 类 号：TB302.5[一般工业技术—材料科学与工程]