Optimization Of Heat Transfer In The Finite
Element Process Modelling Of Inertia Friction
Welding Of SCMV And AerMet 100
Author(s)
M. B. Mohammed, C. J. Bennett, P. H. Shipway & T. H. Hyde
Abstract
Inertia friction welding is the process in which stored kinetic energy in a
flywheel is converted to heat by relative sliding movement between the
components’ surfaces. The process is widely used in joining high strength
aero-engine alloys. Heat transfer interactions play a fundamental role in
determining weld quality as temperature has a significant impact on the
mechanical, thermal and metallurgical behaviours of materials. Heating and
cooling rates influence thermal stresses induced by variations in material
properties due to variations in temperatures. Heat transfer modes involved in the
IFW process, apart from conduction, were hardly mentioned in previous work
while their significance has not been identified. In this paper the heat transfer
modes and their significance in the modelling of the IFW process of the high
strength steels SCMV and AerMet 100 has been identified and a methodology by
which experimental, numerical and empirical approaches were collectively
utilised to optimize the heat transfer analysis is presented. The methodology was
validated for optimizing the heat transfer analysis of the IFW process of the high
strength steels that are the subject of this study.
Keywords: inertia friction welding, SCMV emissivity, AerMet100 emissivity,
convection heat transfer coefficient, interface heat transfer coefficient.
1 Nomenclature
As surface area, m2 z cylinder length, m
a, b constants in eqn (6) ξ emissivity
Keywords
inertia friction welding, SCMV emissivity, AerMet100 emissivity,
convection heat transfer coefficient, interface heat transfer coefficient
Related Book
Other papers in this volume
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