Michaele Neale, OBE, FREng, FIMechE is an internationally renownedconsulting mechanical engineer and Chairman of NealeConsulting Engineers Limited, who have been involved in solvingpractical wear problems in industry around the world for 40 years. Mark Gee, DPhil, MIM, MinstP is a principal research scientistat the National Physical Laboratory, where he manages projectsconcerned with the development of an improved infrastructure forfriction and wear testing in the UK. The Tribology in Practice Series aims to be accessible andindustry-relevant ? bringing the latest developments intribological research, as well as established ideas and techniques,to bear on real engineering problems.