Title :
Design of TOFD receiving filter on DSP builder
Author :
Jin Wang ; Hao Liu ; Zhong-chang Chen
Author_Institution :
China Univ. of Geosci., Wuhan, China
Abstract :
TOFD (Time of Flight Diffraction), one of the most advanced technologies in the field of NDT (Nondestructive Testing), is widely used in science and industry to evaluate the properties of material, component or system without causing damage. Experiments on TOFD show that signal is greatly disturbed by the noise received by the receiving probe. Based on the performance analysis of four different kinds of IIR filters with the aid of the DSP Builder, modeling and simulation are conducted to test the hardware with real TOFD signals. The design of TOFD receiving filter is finally achieved to suit the signal band and sampling frequency of TOFD.
Keywords :
Butterworth filters; IIR filters; field programmable gate arrays; nondestructive testing; signal denoising; DSP builder; IIR filters; NDT field; TOFD frequency; TOFD receiving filter design; TOFD signals; hardware test; noise disturbution; nondestructive testing; performance analysis; signal band; time of flight diffraction; Acoustics; Analytical models; Digital signal processing; IIR filters; Noise; Testing; Welding; Butterworth; DSP Builder; Field Programmable Gate Array; Signal Noise Ratio; Time of Flight Diffraction;
Conference_Titel :
Nondestructive Evaluation/Testing (FENDT), 2014 IEEE Far East Forum on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4799-4731-7
DOI :
10.1109/FENDT.2014.6928222
