Materials

The basic issue in the materials choice for the structural components of the bicycle is the requirement for a Light/Strong structure. In addition, manufacturing should be as simple as possible with the end result being repeatable. Environmental issues such as corrosion and loads incurred during riding must be taken into account, with the recognition that periodic loads cause failure (fatigue) at stress values lower than those associated with static loading. The types of materials considered will include steels, light alloys, and composites. These materials may be used in a 'direct replacement' way, but a better product will result if the design of components is changed to make full use of material properties. Non-structural materials are also important with polymers and elastomers being used for tires, suspension components, and lower molecular weight materials for lubricants.

In this section, some of the issues surrounding structural materials selection, fabrication, and useful lifetime will be discussed. Polymer and elastomer properties will be considered from the view point of composite materials. Corrosion issues will be reviewed.