含能材料2024，Vol.32Issue(4)：353-359,7.DOI:10.11943/CJEM2023198
PBX内部裂纹水浸超声全聚焦成像方法研究
Water Immersion Ultrasonic Total Focusing Method for Internal Cracks in PBX
摘要
Abstract
The internal crack detection of polymer bonded explosive(PBX)is of great significance and engineering application value for its safety and structural integrity evaluation.In order to improve the imaging detection accuracy and image quality of PBX internal crack defects,the curved surface modified water immersion ultrasonic total focusing imaging method was pro-posed.On this basis,the delay multiply and sum(DMAS)technology was further combined.The ultrasonic imaging detection of the bottom crack defects of the Φ100.0 mm semi-cylindrical PBX was studied by water immersion method,and high-precision imaging characterization and high signal-to-noise ratio imaging of this bottom crack defect of the curved PBX was realized.The experimental results show that the crack defect height measurement error of the traditional TFM imaging algorithm is 12.0%,and the image signal-to-noise ratio is 1.37 dB.The height measurement error of this crack defect after surface correction is 3.6%,and the image signal-to-noise ratio is 2.13 dB.The crack defect height measurement error of the surface correction algorithm com-bined with DMAS is only 0.4%,and the image signal-to-noise ratio is 5.32 dB.关键词
高聚物粘结炸药(PBX)/曲面修正成像算法/延迟乘和波束形成(DMAS)技术/裂纹Key words
polymer bonded explosive/surface correction imaging algorithm/delay multiply and sum technology/crack defects分类
军事科技引用本文复制引用
甘仁杰,禹利达,李海宁,张伟斌,李卫彬,杨占锋..PBX内部裂纹水浸超声全聚焦成像方法研究[J].含能材料,2024,32(4):353-359,7.基金项目
国家自然科学基金项目(11974295),国家自然科学基金青年科学基金项目(52105566),中国工程物理研究院创新发展基金(CX20210003) National Natural Science Foundation of China(No.11974295),Young Scientists Fund of the National Natural Science Foundation of China(No.52105566)and the China Academy of Engineering Physics Foundation(No.CX20210003) （11974295）
