Influence of tank’s wall displacements measurement error on its internal stressed state determination
In the article the tank’s wall surface coordinates measure- ment error was calculated and its influence on the accuracy of the tank’s wall material stress-strain state determination was shown.Possible approaches to reduce error are also shown, such as increasing precision of angular positioner’s encoder wheel and using a camera with higher resolution.The measurement error dependence on the tank’s base ra- dius and the number of the measurement points are shown and a conclusion was drown, that more measurement points should be chosen to achieve required accuracy for bigger tank’s base radius.Reducing of tank’s wall surface coordinates measurement er- ror influence on tank’s stress-strain state accuracy calculation is provided with using smoothing splines.The principles for measuring tank’s wall surface coordinates, developed by author provides high accuracy levels and are67Восточно-Европейский журнал передовых технологий 1/9 ( 73 ) 2015good enough for using them to estimate the tank’s wall stress- strain state.