The structure of metals – Geoff Heyes

Geoff Heyes gave a well-targeted talk on the structure of metals, and also covered composite materials to some extent. His interest in materials science had originally been triggered by reading the book “The New Science of Strong Materials or Why You Don’t Fall through the Floor” by J. E. Gordon (still available via Amazon).

Geoff characterised the general properties (chemical & physical) and structure of metals at the crystal lattice and polycrystalline levels, and highlighted the importance of Griffiths’ work on the formation and propagation of cracks in determining their strength & resistance to fatigue loading. Stress raisers in metallic structures were important in this respect, and Taylor’s work on dislocation defects in their ability to withstand shear stress.