An investigation of gamma ray mass attenuation from 80.1 to 834.86 keV for fabric coating pastes used in textile sector

In the present study,we investigate several textile coating pastes used in the market based on their radiation protection capability for gamma rays.The gamma ray mass absorption coefficients of some coating pastes doped with antimony,boron and silver elements have been investigated.It has been determined that the gamma ray mass attenuation coefficient decreases rapidly as the energy of the gamma rays increases.It was determined that the doping of the main printing paste with silver and antimony considerably increased the gamma ray absorption capability of main paste.However,the doping of the paste with boron reduces the mass absorption of gamma rays.In particular,the gamma ray mass absorption power of the main paste doped with silver and antimony was determined to be useful in the gamma energy range from 80 to 140keV.This indicates that the newly doped textile material may be considered for radiation protection in the case of low-energy gamma rays.

A Research on Effect of Finishing Applications on Fabric Stiffness and Prediction of Fabric Stiffness

In this study fabric stiffness/softness is examined which is an important element of applications on finishing processes of fabric.It is also studied the prediction of the fabric stiffness/softness with help of different parameters.Specific to this aim three different weft densitoes(30 tel/cm),3 different yarn numbers(20/1,24/1,30/1 Nm)and 3 different weaving patterns were used and 27 different fabrics were weaved.During the weaving process warp yarn is 100%polyester and weft yarn is 67-33%cotton/polyester.Three different finishing processes are applied to the 27 different fabrics(softness finishing treatment,crosslinking finishing and antipilling finishing)in 3 different concentrations and at the end there are 243 sample fabrics gathered.Stiffness test was applied to the samples according to the ASTM(American Society for Testing and Materials)D 4032-94 the Circular Bending Method.Test results were evaluated statistically.It was seen that the established model was related with p<0.0001 also,Artificial Neural Network(ANN)model was formed in order to predict the fabric softness using the test results.MATLAB packet model was used in forming the model.ANN was formed with 5 inputs(fabric plait,weft yarn no,weft density,weft type,finishing concentration)and 1 output(stiffness).ANN model was established using feed forward-back propagation network.There were many trials in forming the ANN and the best results were gathered at the values established with 0.97317 regression value,2 hidden layers and 10 neurons.

Prediction of Fabrics’Air Permeability Properties by Artificial Neural Network(ANN)Models

In this research it is aimed to predict fabrics’air permeability properties by ANNs(artificial neural networks)before production with using inputs like some fabric parameters and finishing treatments.For this aim 27 various fabrics were weaved.After dyeing finishing treatments for antipilling were applied to fabrics in 3 concentrations.ANN models were established to predict fabrics’air permeability values with the selected 6 inputs such as weft yarn number,weft density,weaving pattern,fabric weight,fabric thickness and finishing treatment concentrations.The best results whose regression degree is R=0.99366,were obtained with two hidden layer networks with 5 neurons.