Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Investigation of the effects of rotation speed, feed and depth of tool penetration on composite metal bonding by friction welding

Authors
Mohammad Hadi Abedi 1
Rouhollah Hosseini 2
Alireza Naddaf Oskuyi 3
1 MSc., mechanical engineering, Islamic Azad University Tehran North Branch
2 Assistant Professor, Department of Mechanical Engineering, Imam Hossein Comprehensive University, Tehran
3 Associate Professor, Department of Mechanical Engineering, Imam Hossein Comprehensive University, Tehran
10.30506/ijmep.2021.117692.1658
Abstract
Combination of metal and composites are frequently used in manufacturing structures.
Therefore it is a great importance to join these mat ends composite and metals strongly. This
joint between metals and composites plays a key role in hybrid designs. Hybrid design is a
newly appearing process for joining metals and composites, which have special and demanding
properties, such as higher strength, higher resistance to radiation and compatible design, etc. In
the present study, which is an experimental investigation of joining metals and composites using
friction lab joining (FLJ) method the composite is made up glass fibers, polymer PA6 as
Thermoplastic and 20% weighs glass fiber. Aluminum alloy (AL 5052) is used as metal.
The goal of this study is to explore the strength of joint between composite and metal, which is
made using FLJ in two different ways (static and dynamic). During the study, progress rate,
spinning speed and depth of penetration are parameters to be considered as effective on the joint
strength. The results showed that the joint properties and strength was affected by all 3
mentioned Parameters, in which, when the penetration depth decreases and normal spinning
speed and progress rate increases, the most efficient joint properties (strength) has been
obtained. As pressure and temperature increases in the joining area, GFRTP gets thinner and
the joint becomes weaker. Due to porosity and voids in the joining area the joint can be failed.
The strength of joints in specimen showed a good result in fatigue test. In 72% of the fatigue
test the failure occurred in composite itself not in joint between AL5052/GFRTP.
Keywords
Thermoplastic
Friction connection
Fatigue Test
Static Testing

Subjects

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  • Receive Date 29 November 2019
  • Revise Date 25 May 2020
  • Accept Date 08 August 2021