复合材料科学与工程Issue(7)：12-17,23,7.DOI:10.19936/j.cnki.2096-8000.20260728.002
"动态响应熵"驱动的激光冲击CFRP界面弱结合缺陷检测方法
A detection method for weak bonding defects at CFRP interfaces driven by dynamic response entropy
摘要
Abstract
To address the challenge of detecting weak bonding defects at interfaces in carbon fiber reinforced plastics(CFRP),a novel in-situ detection method driven by"dynamic response entropy"is proposed for laser shock testing.This approach employs a Photonic Doppler Velocimetry(PDV)system to record particle velocity responses on the rear surface of CFRP specimens subjected to laser shocks of varying energy and pulse width.Post-impact,compu-ted tomography(CT)is employed to examine the internal state of the specimen.Findings reveal a significant correla-tion between the temporal disorder of the dynamic response signal during laser impact and the interfacial delamination be-haviour induced by the shock wave.Building upon this,the degree of pattern disorder in the dynamic response signal's time series is defined as"dynamic response entropy",with entropy values characterising whether delamination occurs in the material under laser impact.Results indicate that non-delaminated specimens exhibit zero dynamic response entropy values,whereas delaminated specimens consistently display values significantly above zero.This confirms the efficacy of dynamic response entropy in characterising laser shock-induced interfacial delamination behaviour in CFRP,thereby pro-viding a technical approach for detecting weak bonding defects at the CFRP interface under laser shock loading.关键词
碳纤维增强复合材料/动态响应熵/激光冲击/背面粒子速度/弱结合界面缺陷Key words
carbon fiber reinforced composites/dynamic response entropy/laser shock/back-side particle ve-locity/weakly bonded interface defects分类
通用工业技术引用本文复制引用
王腾奥,屈美娇,宋雨恒,程丹阳,刘宇程.."动态响应熵"驱动的激光冲击CFRP界面弱结合缺陷检测方法[J].复合材料科学与工程,2026,(7):12-17,23,7.基金项目
国家自然科学基金青年项目C类(12502397) （12502397）
陕西省自然科学基础研究计划项目(2025JC-YBQN-007) （2025JC-YBQN-007）
西安工程大学大学生创新创业训练计划项目(S202410709131) （S202410709131）
