To Study the Effect of Surface Roughness and Embedded Length in Steel-Polyester Composite

Fabrication properties are strongly influenced by the proportions and properties of matrix and reinforcements. The chemical and strength characteristics of the interface between fibers and matrix are particularly important in determining the properties of the composites. The interfacial bond strength has to be sufficient for a load to be transferred from the matrix to the fibers if the composite is to be stronger. To get good interfacial bonding surface treatment, chemical method and temperature must be considered. To study the interface/interphase, it was primarily decided to prepare and test a pull-out specimen. The pull-out test was carried out for different specimens to study the effect of fiber surface roughness and embedded length of the fiber. It was carried out for different specimens, and the pattern of load v/s displacement pattern was observed. One or more peaks in the ascending part of the curve were found which shows that the debonding process is stepwise for steel polyester composite. The CAD/FEA tool was used to simulate a fiber pull-out mechanism, and the results obtained had a deviation of 5% to 8% with the experimental displacements.