Analysis and Examination of Aluminum Sheets Suitable for Automotion Body: Ultrasonic Testing, Signal Processing, Simulation

2021 ◽  
Vol 57 (2) ◽  
pp. 135-144
Author(s):  
Esmaeil Mirmahdi
Keyword(s):  
Signal Processing ◽  
Ultrasonic Testing ◽  
Aluminum Sheets ◽  
Testing Signal

Application of Wavelet Analysis in Nondestructive Testing of Steel and Iron Materials and DSP Implementation

2013 ◽  
Vol 321-324 ◽  
pp. 1270-1273
Author(s):  
Pei Yue Liu ◽  
Jun Fen Wang ◽  
Bao Qiu Ma
Keyword(s):  
Signal Processing ◽  
Nondestructive Testing ◽  
Wavelet Analysis ◽  
Digital Signal Processing ◽  
Digital Signal ◽  
Analog Signal ◽  
Testing Device ◽  
Dsp Implementation ◽  
Testing Signal ◽  
Wavelet Algorithm

Aiming at improving the unideal testing result by means of analog signal processing, wavelet analysis is introduced in the nondestructive testing of steel and iron materials, based on the characteristics of electromagnetic nondestructive testing signal. According to the requirement of wavelet algorithm for hardware, the advantages of DSP, digital signal processing function and high calculating speed, design scheme of the steel electromagnetic nondestructive testing device is proposed in this paper. Experiments show that this method can extract detection signal effectively.

The Research of Signal Processing in Ultrasonic Nondestructive Testing and Evaluation

2013 ◽  
Vol 712-715 ◽  
pp. 2069-2075
Author(s):  
Chun An Ai ◽  
Qiao Wang ◽  
Zhi Gao Xu
Keyword(s):  
Neural Network ◽  
Support Vector Machine ◽  
Signal Processing ◽  
Nondestructive Testing ◽  
Ultrasonic Testing ◽  
Processing Technology ◽  
Support Vector ◽  
Ultrasonic Nondestructive Testing ◽  
Qualitative And Quantitative ◽  
Testing And Evaluation

The development of signal processing technology not only improves the reliability of qualitative and quantitative ultrasound detection, but also promotes the sensitivity and precision. This paper introduces the new progress of signal processing technology in application of Ultrasonic Nondestructive Testing, including the basic principle, characteristic and localization of Wavelet Transform, Adaptive Filter Technique, Artificial Neural Network and Support Vector Machine application in Ultrasonic Testing, and the trend of development in the future.

Ultrasonic testing with advanced signal processing for concrete structures

2005 ◽  
Vol 20 (2) ◽  
pp. 115-124 ◽  
Author(s):  
Hiroaki Hatanaka ◽  
Yutaka Kawano ◽  
Nobukazu Ido ◽  
Masahiro Hato ◽  
Minoru Tagami
Keyword(s):  
Signal Processing ◽  
Ultrasonic Testing ◽  
Concrete Structures

Instantaneous Frequency Estimation of Ultrasonic Testing Signal Based on Matching Pursuits

2013 ◽  
Vol 631-632 ◽  
pp. 1367-1372 ◽  
Author(s):  
Xiu Li Du
Keyword(s):  
Instantaneous Frequency ◽  
Ultrasonic Testing ◽  
Frequency Estimation ◽  
Signal To Noise Ratio ◽  
Instantaneous Frequency Estimation ◽  
Time Frequency ◽  
Frequency Representation ◽  
Matching Pursuits ◽  
Testing Signal ◽  
Suppress Noise

The differences of instantaneous frequency (IF) characteristics between the defect echo and the noise can be used to detect defect and suppress noise for ultrasonic testing signal. Therefore, the IF is one of the important instantaneous parameters of ultrasonic testing signal. To estimate the IF of ultrasonic testing signals more effectively, the peak of time-frequency representation (TFR) from matching pursuits (MP) decomposition is proposed. The performances of IF estimators are compared on the simulated signals at different signal-to-noise ratio (SNR) and the real ultrasonic testing signal. The simulation results present that the proposed method can estimate accurate IF at different SNR.

Closure Welds Identification by Means of Ultrasonic Testing

2014 ◽  
Vol 1040 ◽  
pp. 933-936 ◽  
Author(s):  
Michael Kroening ◽  
Yana Salchak ◽  
Dmitriy A. Sednev
Keyword(s):  
Signal Processing ◽  
Ultrasonic Testing ◽  
Validity And Reliability ◽  
Crucial Issue ◽  
Processing Procedure

In present paper, possibilities for identification and verification of closure welds were discussed. It might be applied for nonproliferation purposes, where validity and reliability of verification are often crucial issue. Methodology of ultrasonic testing and signal processing procedure were proposed. Through set of experiments, the validity of proposed solution was approved.

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