1. Date of download: 6/2/2016 Copyright © ASME. All rights reserved. From: Surface Modification and Fatigue Behavior of High-Pressure Oil Jet-Peened Medium Carbon Steel, AISI 1040 J. Manuf. Sci. Eng. 2006;129(3):601-606. doi:10.1115/1.2673626 Basic principle of oil jet peening Figure Legend:

2. Date of download: 6/2/2016 Copyright © ASME. All rights reserved. From: Surface Modification and Fatigue Behavior of High-Pressure Oil Jet-Peened Medium Carbon Steel, AISI 1040 J. Manuf. Sci. Eng. 2006;129(3):601-606. doi:10.1115/1.2673626 Force applied to the fatigue specimen Figure Legend:

3. Date of download: 6/2/2016 Copyright © ASME. All rights reserved. From: Surface Modification and Fatigue Behavior of High-Pressure Oil Jet-Peened Medium Carbon Steel, AISI 1040 J. Manuf. Sci. Eng. 2006;129(3):601-606. doi:10.1115/1.2673626 Residual stress distribution in the specimens peened at a pressure of 50MPa and SOD 25mm Figure Legend:

4. Date of download: 6/2/2016 Copyright © ASME. All rights reserved. From: Surface Modification and Fatigue Behavior of High-Pressure Oil Jet-Peened Medium Carbon Steel, AISI 1040 J. Manuf. Sci. Eng. 2006;129(3):601-606. doi:10.1115/1.2673626 Surface hardness variation during oil jet peening at different SODs Figure Legend:

5. Date of download: 6/2/2016 Copyright © ASME. All rights reserved. From: Surface Modification and Fatigue Behavior of High-Pressure Oil Jet-Peened Medium Carbon Steel, AISI 1040 J. Manuf. Sci. Eng. 2006;129(3):601-606. doi:10.1115/1.2673626 Photograph of peened region in the fatigue specimen Figure Legend:

6. Date of download: 6/2/2016 Copyright © ASME. All rights reserved. From: Surface Modification and Fatigue Behavior of High-Pressure Oil Jet-Peened Medium Carbon Steel, AISI 1040 J. Manuf. Sci. Eng. 2006;129(3):601-606. doi:10.1115/1.2673626 S-N diagram for the unpeened and peened AISI 1040 steels Figure Legend:

7. Date of download: 6/2/2016 Copyright © ASME. All rights reserved. From: Surface Modification and Fatigue Behavior of High-Pressure Oil Jet-Peened Medium Carbon Steel, AISI 1040 J. Manuf. Sci. Eng. 2006;129(3):601-606. doi:10.1115/1.2673626 Typical micrograph of the crack initiation site in the oil jet-peened specimens tested at a stress level of 520MPa (arrow shows the origin of crack initiation) Figure Legend: