刑事技术2026，Vol.51Issue(2)：175-180,6.DOI:10.16467/j.1008-3650.2025.0018
变造机动车车架超声波检测方法的研究与应用
Research and Application of Ultrasonic Detection Method for Tampered VIN Areas on Vehicle Frames
摘要
Abstract
In motor vehicle-related cases,criminals often modify the VIN(Vehicle Identification Number)of the vehicle frame to make the involved vehicles regain legal status.However,currently,there is a lack of technical means that can quickly and accurately identify whether the VIN code area has been tampered.This paper studies the use of ultrasonic methods to detect VIN code tampering.By employing appropriate probes and coupling agents,combined with wavelet transform noise reduction technology,reliable determination thresholds were explored and a non-destructive testing method was proposed.This method can quickly and accurately detect whether the VIN area of the vehicle frame has been tampered with by"replacement"through hidden welds,and can also precisely identify the size and location of weld defects.This portable non-destructive testing technology provides strong support for quickly investigating suspected stolen vehicles and effectively improves the efficiency of combating criminals.关键词
变造机动车VIN码/超声波检测/隐藏焊缝探测/小波变换Key words
the altered motor vehicle VIN code/ultrasonic testing/hidden weld detection/wavelet transform分类
社会科学引用本文复制引用
闫寒梅,韩志毅,王怡,赵辛,文涓..变造机动车车架超声波检测方法的研究与应用[J].刑事技术,2026,51(2):175-180,6.基金项目
公安部应用创新计划(2017YYCXSXST018) （2017YYCXSXST018）
