Anti-Aliasing for the Visualization of Wavefield Propagation
Visualization of wavefield propagation has been evolving as one of the most significant nondestructive imaging methods for structural damage evaluation and shock analysis. Corresponding visualization systems that are commonly used are potentially affected by aliasing due to the nature of discrete sampling in spatial and temporal domains. This study was conducted to define the problem and produce a spatial sampling guideline for aliasing-free visualization. Experimental demonstration was given at various spatial sampling rates for comparison. The results verified that the guideline is valid and can be used for quick determination of aliasing-free spatial sampling rate prior to experiment. Special guideline for post-sampling optimization was also presented.
R. Varatharajoo, F.I. Romli, K.A. Ahmad, D.L. Majid and F. Mustapha
C. C. Chia and J. R. Lee, "Anti-Aliasing for the Visualization of Wavefield Propagation", Applied Mechanics and Materials, Vol. 629, pp. 493-497, 2014