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Pressure Vessel State Investigation Based Upon the Support Vector Machine

Author: ChangHongFei
Tutor: ShenJiChen
School: Tohoku Electric Power University
Course: Pattern Recognition and Intelligent Systems
Keywords: Pressure vessel Acoustic emission testing The effective identification of the signal Support Vector Machine Penalty factor
CLC: TP274
Type: Master's thesis
Year: 2011
Downloads: 79
Quote: 0
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Abstract


Pressure vessels in petroleum , chemical, power and other sectors of the national economy, and military fields is the main production equipment , but also a great danger of special equipment can cause an explosion or poisoning . Therefore, regular non-destructive testing of the pressure vessel , degree, location , type of pressure vessel defects and defects can be found at an early stage . Acoustic emission detection technology is a dynamic detection method can predict defect, failure may occur , which can ensure the safe operation of the pressure vessel , the acoustic emission detection technology has broad application prospects online fault detection . In this paper, the actual circumstances of the the field pressure vessel acoustic emission testing , select the characteristic parameters of acoustic emission signals , conduct laboratory studies of the effectiveness of identification of acoustic emission signals using support vector machine technology . For this problem in order to solve the typical training support vector machine classification process , the test data , the paper by the the the steel plates analog sound source experiment and spherical the experimental container blasting experimental data for a typical experiment and data processing to obtain compliance with the training of support vector machines , tests of typical data. In this paper, the amount of radial base kernel function , training, testing and classification of typical experimental data , in order to achieve a higher classification accuracy at the same time , also focuses on the analysis and discussion of the optimal choice of the penalty factor . Through these studies greatly increase the pressure vessel early failure prediction , the efficiency and accuracy of the diagnosis . Of acoustic emission technology will have huge application market in the pressure vessel inspection . But there are many urgent problems , and look forward to further research .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system
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