Material Properties (Static and Dynamic)

Static - These include strength and hardness

Strength the ability to resist force without breaking - there are three fundamental kinds of static loading:

• Tensile - a strected wire will need tensile strength
• Compressive - A mine roof-prop will need compressive strength
• Shear - a train coupling bolt will need to resist the equal and opposite forces pulling each other across the component

• Elasticity - a materials ability to return to it's orginal shape after being deformed
• Plasticity - a mateerials readiness to deform to a stretched state when a load is applied. The plastic deformation is permanent even after the load is removed. Plastic exhibits plastic deformation.
• Ductility - a materials ability to be drawn longitudinally to a reduced cross section. A ductile material must have high plasticity.
• Hardness- a materials ability to resist wear or indentation of a material.
• Malleabilty - The ability of a material to be stretched in all directions withot fracture. A malleable material can be hammered into shape.