شماره ركورد كنفرانس :
4561
عنوان مقاله :
Full-field Stress Analysis of Cracked Polymer Specimens at Low Temperatures using Digital Image Correlation
Author/Authors :
I Eshraghi Intelligence-Based Experimental Mechanics Center - Department of Mechanical Engineering - College of Engineering - University of Tehran, Tehran , M Rajabi Intelligence-Based Experimental Mechanics Center - Department of Mechanical Engineering - College of Engineering - University of Tehran, Tehran , N Soltani Intelligence-Based Experimental Mechanics Center - Department of Mechanical Engineering - College of Engineering - University of Tehran, Tehran
كليدواژه :
Digital Image Correlation , Polyethylene , Stress Intensity Factor , Young's Modulus , Low Temperature
عنوان كنفرانس :
The Bi-Annual International Conference on Experimental Solid Mechanics and Dynamics ۲۰۱۴
چكيده لاتين :
In this study the effect of low temperature on the mechanical properties of cracked high density Polyethylene (HDPE) specimens is investigated. Tensile HDPE specimens with edge cracks are prepared and deformation map in front of crack tip is identified using digital image correlation (DIC) technique at room and dry ice temperature. The results of DIC analysis are used in a nonlinear least squares scheme to derive first stress intensity factor (SIF) at room temperature and elasticity modulus and Poisson’s ratio at dry ice temperature. Finite element simulations are also conducted to verify the accuracy of obtained stress intensity values. Results indicate that the method is capable of predicting both the stress state and mechanical properties of cracked polymer specimens.
