Local elasticity mapping of aluminum matrix composites using scanning acoustic microscopy

T. Z. Kordatou; I. K. Tragazikis; T. E. Matikas

doi:10.1117/12.2259943

19 April 2017 Local elasticity mapping of aluminum matrix composites using scanning acoustic microscopy

T. Z. Kordatou, I. K. Tragazikis, T. E. Matikas

Proceedings Volume 10171, Smart Materials and Nondestructive Evaluation for Energy Systems 2017; 101710V (2017) https://doi.org/10.1117/12.2259943
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

Abstract

Scanning acoustic microscopy uses a focused acoustic beam to investigate local elastic properties on the surface of a material. The measurement is based on the difference in propagation time between the direct reflection and the Rayleigh wave. This work deals with the development of a fully automated acoustic microscopy method in order to determine the near-surface elastic property and map sub-surface features in metallic and composite materials. This method allows for the detection and analysis of Rayleigh waves, which are sensitive to subtle changes in the material’s local elasticity. Via this process, the periodicity of the V_(Z) curve can be initially assessed and the local Rayleigh velocity of the material is determined. In this work, the automated acoustic microscopy method was applied for the assessment of aluminum and Al-SiC metal matrix composites.

Citation Download Citation

T. Z. Kordatou, I. K. Tragazikis, and T. E. Matikas "Local elasticity mapping of aluminum matrix composites using scanning acoustic microscopy", Proc. SPIE 10171, Smart Materials and Nondestructive Evaluation for Energy Systems 2017, 101710V (19 April 2017); https://doi.org/10.1117/12.2259943

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