Frequency Spectrum Analysis of Ultrasonic Testing Signal in Concrete

by Wei-Du Li, Tong-ji Univ, Shanghai, China,

Document Type: Proceeding Paper

Part of: Nondestructive Testing of Concrete Elements and Structures


Description is given on high-speed sample apparatus connected with the CTS-25 low frequency ultrasonoscope and computer, the time domain of ultrasonic testing signal is transformed to the frequency domain by way of Fast Fourier Transform. Study of frequency spectrum analysis has been carried out for compact concrete, loose concrete and concrete with voids.

Subject Headings: Frequency analysis | Nondestructive tests | Material tests | Equipment and machinery | Traffic signals | Compaction (material) | Mathematics | Fourier analysis

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