压力容器2024，Vol.41Issue(11)：66-73,8.DOI:10.3969/j.issn.1001-4837.2024.11.009
埋地燃气聚乙烯管热熔接头的矢量相干全聚焦成像检测分析
Analysis of vector coherence factor total focusing method for buried gas polyethylene pipe butt fusion joints
摘要
Abstract
The acoustic attenuation and acoustic dispersion characteristics of detect high-density polyethylene(HDPE)materials lead to ultrasonic attenuation,which affects the accuracy of ultrasonic phased array imaging of butt fusion joint.An improved vector coherent factor total focusing method(IVCF-TFM)is proposed and applied to the detection experiments of detect HDPE butt fusion joint holes defects(∅2 mm,∅3 mm)and side-drilled holes defects(∅2 mm,∅3 mm)in HDPE test blocks.The results show that the depth detection errors of side-drilled holes defects(∅2 mm,∅3 mm)are 0.9 mm and 0.3 mm.The depth detection errors of butt fusion joint hole defects(∅2 mm,∅3 mm)depth detection is 0.5 mm and 0.4 mm respectively.Compared with VCF-TFM,the signal-to-noise ratio of the proposed algorithm is improved by 3.4,3.6,3.7 and 2.5 dB respectively.Compared with TFM and VCF-TFM,the imaging efficiency of the proposed algorithm is reduced by 3.83%and 5.89%,respectively.This algorithm has certain advantages and application prospects in the imaging detection of HDPE materials.关键词
高密度聚乙烯管道/全聚焦成像算法/矢量相干因子/指向性Key words
high-density polyethylene(HDPE)pipe/total focusing method/vector coherence factor(VCF)/directivity分类
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杨懿,王强,张浩文,胡栋,肖权旌,刘延雷..埋地燃气聚乙烯管热熔接头的矢量相干全聚焦成像检测分析[J].压力容器,2024,41(11):66-73,8.基金项目
国家重点研发计划项目(2023YFF0611600) （2023YFF0611600）
浙江省尖兵领雁攻关计划项目(2022C03179) （2022C03179）
