| 1. | The difference is the residual stress in the edge and glass surface.
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| 2. | This relieves the residual stresses and the associated deformations around the hole.
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| 3. | Residual stress occurs in a material in the absence of external loads.
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| 4. | The pits also increase the components'surface area and leave behind residual stresses.
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| 5. | The workpiece rigidity is inflated by the presence of residual stress.
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| 6. | The hole drilling method can measure macroscopic residual stresses near the material surface.
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| 7. | Castings may also have large residual stresses due to uneven cooling.
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| 8. | The original residual stress in the material is calculated from the measured deformations.
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| 9. | These methods create deep compressive residual stresses to increase component life.
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| 10. | The so-called calibration coefficients play an important role in the residual stress evaluation.
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