Wear

Wear is the removal of material from a solid surface as the result of mechanical action exerted by some other solid, possibly in the form of particles or as a result of the action of strong gas or liquid currents upon a surface, especially at high temperatures. Any sliding contact between solids leads to a measurable, if small, material loss. Such losses are particularly serious in modern precision mechanisms, for if they persist they lead rapidly to mechanical failure.

1. Loss of capacity with age
2. Entropy
3. Disintegration
4. Loss

1. Erosion

1. Wood deterioration and decay
2. Structural failure
3. Osteoarthritis
4. Mechanical failure
5. Failure of materials
6. Environmental degradation of inner city areas
7. Deterioration of village amenities
8. Degradation of material resources

1. Inadequate maintenance
2. Fatigue in materials
3. Corrosion of iron and steel

1. Loss
2. Friction
3. Dishonour

1. Repairing wear
2. Preventing erosion of metals

1. Wear
2. Erosion