Instruments and Control
VŠB-TU Ostrava, 6.5.2003
| Annotation of paper No. 49 |
|---|
| Title: | Computation of Stress and Modulus from Peak Valley Data in Uniaxial Compression Test in Dynamic Cyclic Loading Conditions |
| Author(s): | BAGDE, Manoj & PETROŠ, Vladimír |
| Text: | This contribution describes an objective technique to compute stress and modulus from the peak valley data in uniaxial compression test in dynamic cyclic loading conditions. Two methods one using conventional method (CM) and another using a statistical computer program (SCP) is described and results obtained are compared. Generally, data analysis in uniaxial compression testing involves plotting force-displacement or stress-strain curve and then analysis of it to compute stress, Young‘s modulus and secant‘s modulus etc. In conventional testing methods data generated is not that too large and since it is possible to analyze such data set using conventional methods. These methods call for some level of judgement in the analysis of data and the results may not be particularly consistent or accurate. Data generated in unixial compression testing in dynamic cyclic loading conditions were too large, also were recorded in peak valley mode and since need was felt of a special technique to analyze it. The difficulties and problems faced while analyzing such huge data set using CM were first discussed. Then how this problems and difficulties were overcomed using SCP is presented. It is shown that SCP is more efficient than the other method, in terms of accuracy and speed. |