An quantitative inspection method for internal defects based on laser ultrasonic technology

被引：8
|
作者：
Zeng, Wei [1 ]
Qi, Shikai [1 ]
Liu, Li [1 ]
Yao, Feiyan [2 ]
机构：
[1] Jiu Jiang Univ, Coll Elect & Engn, Jiujiang 332000, Peoples R China
[2] Jiu Jiang Univ, Coll Mech & Mat, Jiujiang 332000, Peoples R China
来源：
OPTIK | 2020年 / 216卷 / 216期
基金：
中国国家自然科学基金;
关键词：
Laser; Internal defects; Lr wave; The finite element; SURFACE CRACK; WAVES;
D O I：
10.1016/j.ijleo.2020.164873
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This article proposes the use of laser-generated Lr wave to quantitatively detect internal defects in materials. It analyzes the interaction between laser-generated Lr wave and internal defects in detail, considering that the scattered Lr wave generated at different positions of the internal defect reach different detection points, by analyzing the arrival times of the scattered Lr wave at different positions of the internal defect, it can effectively correct quantitative calculation of internal defects. The finite element simulation results show that this method can effectively quantitatively detect the size of internal defect, which provides an effective method for the quantitative detection of internal defects in materials.
引用
收藏
页数：11
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