Fatigue cracks mostly initiate at areas subjected to high tensile residual stress and stress concentration. Ultrasonic peening is a mechanical method to increase fatigue life by imparting compressive residual stress. In this study residual stresses are characterized in fillet welded ship structural steel plates with longitudinal attachments. As-welded, ultrasonically peened, and specimens peened then subjected to accelerated corrosion testing were measured. Residual stress characterization was performed by the contour method and neutron diffraction.
|Journal||Advanced Materials Research|
|Issue number||Chapter III. Materials and Structures|
|Publication status||Published - Aug 2014|
Bibliographical noteThe paper is available at: http://dx.doi.org/10.4028/www.scientific.net/AMR.996.755
- Residual stress
- ultrasonic peening
- accelerated corrosion testing
- contour method
- neutron diffraction.