نتایج جستجو برای: digital image correlation dic

تعداد نتایج: 1015148  

2015
Xueju Wang Zhipeng Pan Feifei Fan Jiangwei Wang Yang Liu Scott X. Mao Ting Zhu Shuman Xia

We present an application of the digital image correlation (DIC) method to highresolution transmission electron microscopy (HRTEM) images for nanoscale deformation analysis. The combination of DIC and HRTEM offers both the ultrahigh spatial resolution and high displacement detection sensitivity that are not possible with other microscope-based DIC techniques. We demonstrate the accuracy and uti...

Journal: :CoRR 2017
Peihan Tu

Digital image correlation (DIC) is a widely used optical metrology for surface deformation measurements. DIC relies on nonlinear optimization method. Thus an initial guess is quite important due to its influence on the converge characteristics of the algorithm. In order to obtain a reliable, accurate initial guess, a reliability-guided digital image correlation (RG-DIC) method, which is able to...

2009
Hang Yao Wei Tong

Introduction Moving least squares approximation is one kind of meshless methods in which the approximation is built from nodes only. Comparing to mesh-based methods, meshless methods have advantages on (1) refining is simpler to incorporate, (2) moving discontinuities can be treated easily, (3) large deformation can be handled robustly, (4) higher-order continuous shape functions, (5) non-local...

2009
B. Pan H. Xie L. Yang Z. Wang

Application of the three-dimensional digital image correlation technique (3D DIC) to the accurate measurement of full-field surface profile of a 730 mm-diameter carbon fibre composite satellite antenna is investigated in this article. The basic principles of the 3D DIC technique are described. The measured profile was compared with the one measured with a three-dimensional coordinate measuring ...

2008
Hang Yao Yue Xuan Wei Tong

Introduction A MATLAB program called DIC1D will be presented in this talk as a valuable tool for both novice and experienced users of digital image correlation (DIC) analyses in accurate and reliable whole-field deformation measurement applications. The need for speedy calculations and better spatial resolution favors a smaller subset size, while a higher signal-to-noise ratio and more accuracy...

2013
Garrett J. Pataky Huseyin Sehitoglu Hans J. Maier

Article history: Received 5 July 2012 Received in revised form 25 September 2012 Accepted 29 September 2012 The fatigue crack growth of the nickel-based superalloy Haynes 230 was investigated at room temperature and 900 °C using digital image correlation (DIC). As expected, the crack growth rates at high temperature were much faster than at room temperature. However, the crack closure levels, w...

2018
Hong He Rong Zhou Yuanwen Zou Xuejin Huang Jinchuan Li

Cell mechanical stretching in vitro is a fundamental technique commonly used in cardiovascular mechanobiology research. Accordingly, it is crucial to measure the accurate strain field of cell substrate under different strains. Digital image correlation (DIC) is a widely used measurement technique, which is able to obtain the accurate displacement and strain distribution. However, the traditiona...

2014
Dingding Chen Kazuo Arakawa Masakazu Uchino Changheng Xu

Vacuum assisted resin transfer moulding (VARTM) is a promising manufacture process for making large and complex fiber reinforced composite structures. However, the complexity of the flow of the resin in the infusion stage usually leads to nonuniform property distribution of the produced composite part. In order to control the flow of the resin, the situation of flow should be mastered. For the ...

Journal: :Optics letters 2011
Long Luu Zhaoyang Wang Minh Vo Thang Hoang Jun Ma

The interpolation algorithm plays an essential role in the digital image correlation (DIC) technique for shape, deformation, and motion measurements with subpixel accuracies. At the present, little effort has been made to improve the interpolation methods used in DIC. In this Letter, a family of recursive interpolation schemes based on B-spline representation and its inverse gradient weighting ...

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