شماره ركورد كنفرانس :
5120
عنوان مقاله :
Evaluating the Accuracy and Reliability of Digital Image Correlation in One-dimensional Rigid Displacement
پديدآورندگان :
Haghighi A a.a.haghighi@ut.ac.ir Intelligence-Based Experimental Mechanics Center, School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran , Soltani N Intelligence-Based Experimental Mechanics Center, School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
كليدواژه :
Digital image correlation , Subset size , Reliability , Quantization error assessment , Mean intensity gradient
عنوان كنفرانس :
كنفرانس دو سالانه بين المللي مكانيك جامدات تجربي
چكيده فارسي :
Indication quality of the result for reporting a measurement result of a physical quantity is necessary for assessing its reliability. The Digital Image Correction (DIC) is a technique for measuring the whole displacement field using pre- and post-test images recorded. In DIC, error evaluation has received much attention in the past decade, and the characteristics of the uncertainty of DIC are not well understood quantitatively. The present report aims to evaluate the accuracy and reliability of DIC for rigid one-dimensional displacement tests. At different levels of reliability, a dependence of the maximum of quantization errors on the subset size and image quality was established. Our study investigates a model for error estimation based on the level of reliability and shows that the quantization error of DIC can be less than 0.001 pixels with 99% reliability.
