Paper Title:
Synchrotron Strain Mapping of the Residual Strain Distribution around Foreign Object Damage in Laser Shock Peened Ti-6AL-4V Alloy
  Abstract

The current study investigates the effect of foreign object damage (FOD) on the pre-existing compressive residual stress field associated with laser shock peening (LSP) and its evolution upon combined LCF/HCF cycling. FOD was introduced onto an aerofoil-shaped specimen that had been previously LSP treated through ballistic impacts at angles of 0° and 45° to the leading edge. It is shown that the FOD notch created by 45° impact was asymmetric in shape and smaller in depth compared to that created at 0° impact. Significant through thickness compression was introduced parallel to the leading edge as a result of the LSP process. The residual strain distribution was mapped around the FOD notch by synchrotron X-ray radiation. The results show predominantly compressive stresses ahead of the notch, being greater for the 0 compared to 45 impact. No significant stress relaxation was observed after a combined (1000 HCF cycles superimposed on 1 LCF cycle) cycle.

  Info
Periodical
Edited by
Y. Akiniwa, K. Akita and H. Suzuki
Pages
19-24
DOI
10.4028/www.scientific.net/MSF.652.19
Citation
S. Zabeen, M. Preuss, P. J. Withers, S. Spanrad, J. Tong, J. Schofield, "Synchrotron Strain Mapping of the Residual Strain Distribution around Foreign Object Damage in Laser Shock Peened Ti-6AL-4V Alloy", Materials Science Forum, Vol. 652, pp. 19-24, 2010
Online since
May 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: P. Frankel, Jian Ding, Michael Preuss, Jim Byrne, Philip J. Withers
Abstract:The current study compares the residual strain around foreign object damage (FOD), measured using synchrotron diffraction, to the strain...
291
Authors: Paul S. Prevey, Douglas J. Hornbach, N. Jayaraman
Abstract:Friction stir welding (FSW) allows the joining of aluminum alloys in ways previously unattainable offering new manufacturing technology....
3807
Authors: M.K. Khan, Michael E. Fitzpatrick, L.E. Edwards, S.V. Hainsworth
Abstract:The residual strain field around the scratches of 125µm depth and 5µm root radius have been measured from the Synchrotron X-ray diffraction....
25
Authors: Mounir Frija, Raouf Fathallah, Lasaad Ben Fkih
Abstract:This paper presents a numerical simulation of the Laser Shock Peening (LSP) process using Finite Element Method (FEM). The majority of the...
85
Authors: Lucjan Witek
Abstract:This paper presents results of experimental fatigue analysis of the compressor blades subjected to high cycle fatigue. The blades used in...
269