Coverage effect of surface stress without surface reconstruction usually result a compressive stress ( assuming clean clean surface as reference or zero stress ).
42.
Surface compressive stresses confer resistance to metal fatigue and to some forms of corrosion, since cracks will not grow in a compressive environment.
43.
More important are their effects upon lessening tensile stresses while increasing some compressive stresses and reducing " thermal and mechanical stresses during chip formation ".
44.
In toughened glass, compressive stresses are induced on the surface of the glass, balanced by tensile stresses in the body of the glass.
45.
The deep compressive stresses are due to the shock wave peak pressure being maintained above the HEL to greater depths than for other peening technologies.
46.
This factor, combined with the small spot size, requires many shots to achieve a significant surface compressive stress and depths of 1 mm.
47.
This enables the laser peened compressive stresses to be retained at higher operating temperatures during long exposures than is the case for the other technologies.
48.
In reinforced concrete construction, the principle of the arch is used so as to benefit from the concrete's strength in resisting compressive stress.
49.
The bony trabeculae are aligned in the path of tensile and compressive stresses to provide maximum resistance to occlusal forces with a minimum of bone substance.
50.
Shot peening is often called for in aircraft repairs to relieve tensile stresses built up in the grinding process and replace them with beneficial compressive stresses.
