Process Control Techniques for Laser Peening of Metals
- Prof. Dr.-Ing Lothar Wagner Chairman of ICSP8
Published Online: 7 FEB 2006
Copyright © 2003 Wiley-VCH Verlag GmbH & Co. KGaA
How to Cite
Specht, R., Harris, F., Lane, L., Jones, D., Hackel, L., Zaleski, T., Halpin, J., Hill, M. and Wübbenhorst, W. (2003) Process Control Techniques for Laser Peening of Metals, in Shot Peening (ed L. Wagner), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606580.ch61
TU Clausthal, Institut für Werkstoffkunde und Werkstofftechnik, Agricolastr. 6, D-38678 Clausthal-Zellerfeld, Germany
- Published Online: 7 FEB 2006
- Published Print: 12 MAY 2003
Print ISBN: 9783527305377
Online ISBN: 9783527606580
- laser peening of metals;
- process control techniques
Laser Peening also known as LasershotSM and Laser ShockTM Peening, is a surface treatment which can induce compressive stresses in metals at depths exceeding 1 mm. This produces a more damage tolerant component, which resists fatigue and Stress Corrosion Cracking (SCC) failures better than components treated with conventional shot peening.
A new Laser Peening facility was brought on line in early 2002 by MIC in Livermore, CA. This facility utilizes a Lawrence Livermore National Laboratory (LLNL) designed solid state laser employing Neodymium doped laser glass slabs and phase conjugation technology to enable high energy & high laser repetition rate combined with excellent beam quality. Laser Peening process parameters have been identified which will impact on the final depth of compressive stresses in a metal component. Process control techniques widely utilized in conventional shot peening have been adapted for use in Laser Peening with good success. As a result, Suppliers and Users of Laser Peening have a reliable method of monitoring the critical process parameters in a manner that will lead to consistency of production operation and repeatability of end results.