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ANALYSIS AND TESTING OF SURFACE COLD‐WORK PROCEDURES APPLIED TO NOTCHED, FLAT ELEMENTS
Author(s) -
BanksSills L.,
Dagani E.,
Eliasi R.,
Reinberg E.,
Schwartzman R.
Publication year - 1994
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1994.tb00779.x
Subject(s) - residual stress , materials science , finite element method , work (physics) , structural engineering , residual , surface (topology) , composite material , mechanical engineering , engineering , geometry , mathematics , algorithm
— Several surface cold work procedures are developed to induce compressive residual stresses adjacent to a notch in a flat element. It would appear that they should all lead to fatigue life enhancement. For sharp notched specimens excellent fatigue life enhancement is observed. For moderately notched specimens only one of the procedures produces this enhancement. In order to shed light on the shortcomings of two of the procedures, the residual stress field is determined by means of finite element analyses in two and three dimensions. It is observed that the two‐dimensional analyses predict a residual stress field which should lead to fatigue life enhancement. It is the three‐dimensional analyses which help to explain why two of the cold work procedures fail.