Three-dimensional defect reconstruction in carbon fiber-reinforced composites with temporally non-uniform pulsed thermography data

IF 4.1 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Ndt & E International Pub Date : 2025-03-11 DOI:10.1016/j.ndteint.2025.103363

L. Gahleitner , G. Mayr , P. Burgholzer , U. Cakmak

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引用次数: 0

Abstract

This research study presents an efficient and comprehensive three-dimensional photothermal reconstruction scheme for non-uniform pulsed thermography data utilizing the virtual wave concept. For the transformation of temperature signals into virtual wave signals, different physical-based temporally non-uniform sampling techniques for the temperature and the virtual wave signal are used. Furthermore, time reversal is implemented for three-dimensional defect reconstruction in the context of temporally non-uniform sampling. The proposed reconstruction scheme is experimentally demonstrated using carbon fiber-reinforced composite samples with foreign object defects as well as flat bottom holes. To sum up, a reconstruction technique is demonstrated that allows increasing the computational efficiency, while retaining the quality of the reconstruction results and simultaneously reducing data storage requirements compared to conventional temporally uniform sampling.

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基于时间非均匀脉冲热成像数据的碳纤维增强复合材料三维缺陷重建

本研究提出了一种利用虚波概念对非均匀脉冲热成像数据进行高效、全面的三维光热重建方案。为了将温度信号转换为虚波信号，对温度信号和虚波信号采用了不同的基于物理的时间非均匀采样技术。此外，在时间非均匀采样的情况下，实现了三维缺陷重建的时间反转。采用带异物缺陷和平底孔的碳纤维增强复合材料样品对所提出的重建方案进行了实验验证。综上所述，与传统的时间均匀采样相比，一种重建技术可以提高计算效率，同时保持重建结果的质量，同时减少数据存储需求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ndt & E International 工程技术-材料科学：表征与测试

CiteScore

7.20

自引率

9.50%

发文量

121

审稿时长

55 days

期刊介绍： NDT&E international publishes peer-reviewed results of original research and development in all categories of the fields of nondestructive testing and evaluation including ultrasonics, electromagnetics, radiography, optical and thermal methods. In addition to traditional NDE topics, the emerging technology area of inspection of civil structures and materials is also emphasized. The journal publishes original papers on research and development of new inspection techniques and methods, as well as on novel and innovative applications of established methods. Papers on NDE sensors and their applications both for inspection and process control, as well as papers describing novel NDE systems for structural health monitoring and their performance in industrial settings are also considered. Other regular features include international news, new equipment and a calendar of forthcoming worldwide meetings. This journal is listed in Current Contents.