Strength Analysis Comparative Study of different Patterns of Automobile Inner Tube

Abstract

This paper deals with the study of patterns used on the inner tyre tube. The pattern plays significant role in strength and expansion (elongation) of inner tube. The detailed study of inner tube from the process of manufacturing to testing is covered in this paper. The material used in inner tube includes 80.38phr Russian butyl rubber, 14.58phr EPDM and 5.033phr Reclaim rubber with some homogenizers and additives. For testing, the samples are taken from f78-15 inner tube having average thickness of 1.6 mm. The samples are 120mm in longitudinal length & 25mm in Width. Total five samples were taken in account. Each sample contains single type of line pattern i.e. (i)Vertical line, (ii)Horizontal line, (iii) plus shape line, (iv) cross line, (v) plan sample(no patterns). The samples are tested on Universal Testing Machine. The breaking strength and Elongation of each sample is observed. The cross line pattern sample turns out to be strongest sample and has greater elongation. As a result of completing above procedure it says that the cross pattern benefits higher strength and reduces the weight of inner tube as thickness is decreased thus affects the performance and fuel economy of the vehicle.