Al-Qadisiyah Journal for Engineering Sciences

Abstract Artificial neural networks (ANN) were used to predict the viscosity of epoxy resin modified by natural waste material (pomegranate peel) powder. This waste material, which has a high pollution capacity for the environment, could be used as an improvement to the properties of a weaken material such as epoxy resin In reservoir engineering computations the viscosity parameter is a very important fluid property. The data is not either reliable or unavailable most of the time; It should be specified in the lab. Levenberg-Marquardt backpropagation of artificial neural network based model (ANNs) was evolved to predict the viscosity of modified pomegranate peel powder of epoxy resin. Three parameters affecting the viscosity of mixtures based on epoxy resin containing pomegranate peel powder and pure epoxy resin were studied. These are temperature, concentration of pomegranate peel, and shear rate. The viscosity as output was predicted by training the network. A network was built up and trained using experimental information. The effects of temperature (30-50 °C), concentration of pomegranate peel powder (0-3)wt% and shear rate (4.35-15.95 1/sec) on the epoxy resin were modeled by ANNs as well. The expected values were in excellent agreement with the measured ones, showing that the developed model is really accurate and has the great ability for predicting the viscosity. The linear regressions R2 0.9994 and 0. 9998 are the values of the ANN viscosity model for training and testing data set, respectively, 2.7175*10-4 and 1.2441*10-4 are the values of mean square error respectively.

Abstract The viscosity at different temperature are measured for some Iraqi wells, A mathematical model was proposed to describe the viscosity as a function of temperature depending on the experimental results , All the samples were collected from storage tanks of the following sites: South of Al Rumeela, North of Al Rumeela, Al Halfaya and Bozorgan. The results give good agreement with the experimental result that was measured for Iraqi wells, where the maximum average percentage of error was 7.4 % , the maximum AAD% was 4.4% and the maximum SD was 0.49013%.

Abstract This research is aimed to study the effect addition of Borax on Vulcanization properties of Rubber. which is represented by Viscosity , Elasticity,Plasticity which is defined as Rheology where suitable Quantities from Borax powder with loading level (0,5,10,15,20 pphr) were added to suitable type of Rubber (styrene- Butadiene Rubber, Nitrile Rubber ,and poly Chloroprene type (WRT)) and notice the change in Scorch time and this perioed time which is limited the Resistance of Rubber Compounds to Vulcaniztion and Occurrence at Min. point of Viscosity and Curing time which is Limited the Perioed time for Ending the Vulcaniztion Process and Occurrence at atopmost point for Viscosity after addition of Borax to Rubber Compounds and which has been check that the addition Borax powder which is discrease the Viscosity of (SBR ) Rubber and Increase the Viscosity of (NBR) Rubber and Increase the viscosity of (WRT) Rubber for point (10pphr)