森林工程2026，Vol.42Issue(5)：1011-1021,11.DOI:10.7525/j.issn.1006-8023.2026.05.012
基于改进磁偶极子模型的林业装备钢制构件缺陷正反演量化评估方法
Quantitative Evaluation Method for Forward and Inverse Modeling of Improved Magnetic Dipole for Defects in Steel Components of Forestry Equipment
摘要
Abstract
To improve the accuracy of three-dimensional quantitative evaluation for corrosion thinning,pitting,and boundary-discontinuity defects in steel components of forestry equipment under service conditions involving high humid-ity,mud-water erosion,and cyclic temperature variations,an improved discretized magnetic dipole forward model and a two-stage inversion-based quantification framework are proposed.In the forward modeling stage,a second-order re-sponse-driven adaptive mesh refinement strategy and a three-point surface-element quadrature scheme are introduced to enhance the characterization of pit edges and discontinuity zones while controlling the number of nodes.In the inversion stage,principal component analysis(PCA)is first employed to reduce the dimensionality of the defect description and constrain the search space,while the Newton – Raphson optimizer is used to optimize the hyperparameters of the radial basis function(RBF)model to obtain robust initial estimates.In the second stage,the covariance matrix adaptation evo-lution strategy is adopted to further refine the solution in the low-dimensional space by coupling it with the forward model.Simulation results demonstrate that the proposed forward model achieves accuracy close to that of the finite ele-ment model while significantly reducing computational time,and that the inversion framework provides more stable re-constructions for defects with diverse morphologies.The proposed method can be embedded into intelligent forestry con-dition monitoring and predictive maintenance systems,thereby providing a quantitative basis for risk assessment,mainte-nance prioritization,and safety management of forestry equipment.关键词
智慧林业/腐蚀缺陷/磁偶极子模型/缺陷反演/牛顿-拉夫逊算法/协方差矩阵自适应进化策略/有限元模型/主成分分析Key words
Smart forestry/corrosion defects/magnetic dipole model/defect inversion/Newton-Raphson-based opti-mizer/covariance matrix adaptation evolution strategy/finite element model/principal component analysis分类
农业科技引用本文复制引用
张锡武,唐健强,白智轶,邢文婷,徐凯宏..基于改进磁偶极子模型的林业装备钢制构件缺陷正反演量化评估方法[J].森林工程,2026,42(5):1011-1021,11.基金项目
黑龙江省重点研发计划基金资助项目(GZ20210017 （）
GZ20210018 （）
GZ20210019) （）
东北林业大学2025年高教强省专项-产教融合研究生联合培养基地建设资助项目. （）
