شماره ركورد كنفرانس :
4561
عنوان مقاله :
Determination of the elastic and plastic properties of SS304 at high temperature by application of inverse FEA on small punch creep test results
Author/Authors :
H Nobakhti Intelligence-Based Experimental Mechanics Laboratory - Department of Mechanical Engineering - College of Engineering Schools - University of Tehran, Tehran , E Tasdighi Intelligence-Based Experimental Mechanics Laboratory - Department of Mechanical Engineering - College of Engineering Schools - University of Tehran, Tehran , N Soltani Intelligence-Based Experimental Mechanics Laboratory - Department of Mechanical Engineering - College of Engineering Schools - University of Tehran, Tehran
كليدواژه :
Small punch creep test , Inverse finite element procedure , High temperatures elastic properties , High temperature plastic properties
عنوان كنفرانس :
The Bi-Annual International Conference on Experimental Solid Mechanics and Dynamics ۲۰۱۴
چكيده لاتين :
In the present study three major elastic and plastic properties of SS304 at high temperatures, i.e. yield strength, ultimate tensile strength and maximum elongation at fracture; have been determined by applying the inverse finite elements procedure on the time-deflection results of small punch creep test. In the small punch creep test that may be used instead of conventional creep test when small amount of material is available especially when in-service evaluation of materials is required, the first part of output time-deflection curve of small punch creep test reflects the elastic and plastic behavior of material at the test temperature. In order to determine the yield strength, ultimate tensile strength and maximum elongation at fracture of SS304 at high temperatures, some small punch tests are performed at temperatures up to 700°C. The model of the specimen of the small punch test was built and analyzed using ABAQUS, result of which was used to trace the experimental output of small punch creep test in an inverse finite elements approach. It is shown that when the output curve of FEA is close enough to small punch output curve, the elastic and plastic properties of material that are used by the software, are in good agreement with reported values in other references. Therefore, present method is proposed to measure the elastic and plastic material properties at high temperature with limited amount of material in short time.
