欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
二维数字图像相关方法作为一种非接触全场变形测量的光学方法,在工程上有着广泛的应用。由于其假设物体只发生面内位移,而实验中往往存在离面位移,从而引起测量误差。本文针对这一问题利用了针孔模型,从理论上分析了离面位移对普通镜头测量结果的影响,通过铝块平移实验验证了理论分析的正确性。利用提出的理论模型修正橡胶材料的变形测量结果,并与远心镜头测量结果进行对比,发现修正后的普通镜头测量的结果更接近远心镜头测量的结果。最后,本文根据理论分析和实验验证,给出了减小或消除离面位移造成误差的方法。
英文摘要：
Two-dimensional Digital Image Correlation （2D-DIC） method is a non-contact optical full- field deformation measurement method, and is widely applied in engineering. It assumes that the specimen has only in-plane displacement. However, the off-plane displacement often occurs in experiment. So the measurement error is inevitable. A pinhole model is applied, and the influence of off-plane displacement on measurement results is theoretically analyzed in this paper. Experimental results of aluminum block translation certify the theoretical analysis. The modified large deformation measurement results of rubber by normal lens are closer to the telecentric lens measurement results. At last, a reasonable way to decrease even eliminate the error caused by off-plane displacement is suggested in this paper.
同期刊论文项目
同项目期刊论文
Effect of porous microstructure on the elastic modulus of plasma-sprayed thermal barrier coatings: E
The geometric phase analysis method based on the local high resolution discrete Fourier transform fo
Performances of different subset shapes and control points in subset-based digital image correlation
Controlling the surface buckling wrinkles by patterning the material system of hard-nano-film/soft-m
Physical and mechanical properties of plasma-sprayed thermal barrier coatings at room and high tempe
Fabrication and properties of lightweight ZrB2 and SiC-modified carbon bonded carbon fiber composite
A measuring system for mechanical characterization of thin films based on a compact in situ micro-te
Effect of SiC content on the ablation and oxidation behavior of ZrB2-based ultra-high temperature ce
Microstructure and mechanical properties of ZrB2-SiC composites prepared by gelcasting and pressurel
Full-field high-temperature strain measurement using active imaging digital image correlation and in
High-accuracy 2D digital image correlation measurements with low-cost imaging lenses: implementation
Accurate ex-situ two-dimensional digital image correlation measurements using an ultra-stable imagin
Microscopic 3D structural inversion technique for multilevel periodic structures with SEM moiré meth
Numerical and experimental investigation of residual stress in thermal barrier coatings during APS p
A novel method to fabricate micro-gratings applied for deformation measurement around a crack in a t
Application of the digital phase-shifting method in 3D deformation measurement at micro-scale by SEM
Identification of the elastic stiffness ofcomposites using the virtual fields method and digital ima
Investigation of residual stress in 2D plane weavearamid fiber composite plates using moiré interfer
Statistics-based electron Moiré technique: a novelmethod applied to the characterization of mesoporo
Determination of Viscoelastic Poisson’s Ratio of Solid Propellants using an Accuracy-enhanced 2D Dig
An evaluation of convergence criteria for digitalimage correlation using inverse compositional Gauss
Strain measurement of objects subjected toaerodynamic heating using digital image correlation: Exper
Three-dimensional displacement measurement based onthe Ccombination of digital holography and digita
Simulation of residual stresses and their effects on thermal barrier coating systems using finite el
Fabrication of speckle patterns by focused ion beam deposition and its application to micro-scale re
Single-lens 3D digital image correlation system based on a bilateral telecentric lens and a bi-prism
A Six-Spot Grating Diffraction Strain Gauge and Its Application to Measuring High-Temperature Mechan
期刊信息
位置：