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Laser Shock Peening - Performance and Process Simulations
Woodhead Publishing Ltd, Jan 2006, Pages: 172
Laser shock peening (LSP) is an innovative surface treatment technique, which has been successfully applied to improve fatigue performance of metallic components. The key beneficial characteristic after LSP treatment is the presence of compressive residual stresses beneath the treated surface of metallic materials, mechanically produced by high magnitude shock waves induced by a high-energy laser pulse. Compared with the traditional shot peening (SP) process LSP can produce high magnitude compressive residual stresses of more than 1 mm in depth, 4 times deeper than traditional SP.
LSP has been intensively investigated in the last two decades with over 100 scientific papers and reports. Most studies and investigations are based on experimental approaches, focusing on understanding mechanisms of LSP and its influences on mechanical behaviours and in particular enhanced fatigue performance of treated metallic components. In most cases, there was a lack of comprehensive documentation in the relevant information in applications of LSP for various metallic alloys, such as materials properties, component geometry, laser sources, LSP parameters, and distribution of 3-D residual stresses. However, some comprehensive modelling capacities based on analytical models and dynamic finite element models (FEM) have been established for simulating LSP in the last decade, which provide unique tools for evaluation of LSP and optimization of residual stress distributions in relation to materials properties, component geometry, laser sources, and LSP parameters. Those approaches can play significant roles in design and optimization of LSP processes in practical applications.
'Laser Shock Peening: Its Performance and Process Simulation' consolidates the knowledge and experience in a comprehensive publication for the first time. It describes the mechanisms of LSP and its substantial roles in improving microstructure, surface morphology, hardness, fatigue life and strength, and stress corrosion cracking. In particular, it comprehensively describes simulation techniques and procedures with some typical case studies, which can be adopted by engineers and research scientists to design, evaluate and optimize LSP processes in practical applications.
It will be of particular interest to engineers and scientists who are working on development of valued-added surface treatment for critical metallic components such as turbine components and fastened joints in aerospace, marine and automotive applications.
Key Features:
- provides for the first time, a comprehensive coverage of this important area
- written by two world renowned experts
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