Characterization of Heterogeneous Response of Al Bicrystal Subject to Micro Scale Laser Shock Peening

• Published in: Experimental mechanics Vol. 51; no. 5; pp. 793 - 796
• Main Authors: Vukelic, S., Noyan, I. C., Kysar, J. W., Yao, Y. L.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.06.2011; Springer
• Subjects: ALUMINIUM; BICRYSTALS; Biomedical Engineering and Bioengineering; Brief Technical Note; Characterization and Evaluation of Materials; Control; DEFORMATION; Dynamical Systems; ENGINEERING; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Instruments, apparatus, components and techniques common to several branches of physics and astronomy; LASERS; MATERIALS SCIENCE; Measurement and testing methods; Optical Devices; Optics; Photonics; Physics; PLASTICITY; SHOT PEENING; Solid Mechanics; STRAINS; Structural and continuum mechanics; THIN FILMS; Vibration; X- and γ-ray instruments and techniques; X-RAY DIFFRACTION; X-ray diffraction; Intensity contrast method; Laser; Plasticity; Bicrystal; X ray radiography; Laser assisted processing; Shot peening; Aluminium; Shock wave; Thin film; Grain boundary; Inelasticity; Bulk material; Laser pulse; Stress measurement
• ISSN: 0014-4851; 1741-2765
• DOI: 10.1007/s11340-010-9380-0

This letter shows the ability to perform characterization of the strain field in an aluminium bicrystal subject to plane strain condition induced by micro scale laser shock peening. Intensity contrast method, previously used in topographic measurements of strain fields in thin films is employed here. Our results show that this method is applicable for measurements of the plastically deformed bulk materials. Moreover, heterogeneous response of the grain boundary is observed as periodic nature of deformation.