Pierre Aumjaud

Department: Mechanical engineering
Discipline: Engineering
Research Centre/Unit: Multi-functional materials

Project Summary

Sandwich structures are widely used in transports, and especially in the aeronautical industry, for their excellent mechanical and lightweight properties. Transports are often vibration-rich environments, which can make fatigue problematic, increase fuel consumption, and adversely affect passenger comfort. Therefore, efforts must be made to reduce vibration levels effectively in order to improve reliability, safety and cost efficiency.

My PhD project investigates ways to damp vibration passively in honeycomb-core sandwich structures without affecting their inherent mechanical properties at low weight. The Double Shear Lap-Joint damper, recently developed at the University of Exeter, has been optimised in order to provide the highest vibration damping  for the least increase in mass in honeycomb sandwich structures using viscoelastic material.

Supervisory Team

Christopher W. Smith, Kenneth E. Evans

Wider Research Interests

Vibration damping, sandwich structures, cellular materials, multi-objective optimisation, smart materials (shape memory alloys, auxetic materials, band gap materials, magnetostrictive materials)

Authored Publications/Reports

P. Aumjaud, C.W. Smith, K.E. Evans (1st September 2014) A novel viscoelastic damping treatment for honeycomb sandwich structures, Composite Structures, Vol 119, 322-332