Investigation of friction welding parameters of AISI 304L/Ti-6AL-4V joints

Abstract

The present paper focuses on evaluating the bonding strength interfaces between the contact materials such as AISI 304L and Ti-6Al-4V via friction welding (FW). Experimental tests are performed by considering the process parameters such as friction time, rotational speed and friction pressure, mechanical properties were evaluated. The rotational speed of 1800, 1600, 2100, 2300 and 2500 rpm were considered in the study. The response surface methodology (RSM) is used to predict the outcomes of the work. Experimental tests were revealed that the friction pressure of 160 MPa, 7 sec of friction time and speed of 2300rpm are the optimal parameters based on the joint strength. Also, observed that the aluminum interlayer thickness of 1.25 µm on the Ti-6Al-4V side and 1.38 µm on the AISI 304L side. The tensile strength of 143.39 MPa was noticed at the interface area. The RSM response generates the curved potential line frequency range with 6.5% elongations. Results confirm that, the response surface methodology outcomes and experimental values were in close agreement.

Acoustic analysis of chevron nozzle: A CFD approach

“…During airplane takeoff and landing, engines endure higher loads to generate increased power, resulting in more noise compared to aircraft in flight. Research efforts have predominantly focused on improving the mixing of shear layers in jet engine nozzles while maintaining optimal performance [3]. Aircraft noise ranks as the second most disruptive noise source, following noise generated by rocket launches.…”