Indian Journal of Science and Technology

Open Access Open Access  Restricted Access Subscription Access

The use of Phase-Shift Keyed Signals to Increase Thickness Measurement Accuracy of Large-Sized Products Made of Polymeric Composite Materials


Affiliations
1 National Research University, Moscow Power Engineering Institute,Electrical Engineering Faculty, Moscow, Russian Federation
 

It is shown that to improve the accuracy of Ultrasonic (US) thickness measurements of the large-sized products made of polymeric composite materials it is required to use Phase-Shift Keyed (PSK) Signals, known from Radio Engineering, and to determine echo signal time delay by the maximum of compressed PSK pulse. In order to improve the measurement accuracy US PSK Huffman encoding signals (M-signals) should be used in the continuous repetition mode, providing simultaneously high measurement accuracy and the greatest possible control sensitivity for a given period of repetition of probing pulses.

Keywords

Phase-Shift Keyed Signals, Polymeric Composite Materials, Measurement Accuracy, Ultrasonic Thickness Measurement
User

Abstract Views: 159

PDF Views: 0




  • The use of Phase-Shift Keyed Signals to Increase Thickness Measurement Accuracy of Large-Sized Products Made of Polymeric Composite Materials

Abstract Views: 159  |  PDF Views: 0

Authors

Vladimir K. Kachanov
National Research University, Moscow Power Engineering Institute,Electrical Engineering Faculty, Moscow, Russian Federation
Igor V. Sokolov
National Research University, Moscow Power Engineering Institute,Electrical Engineering Faculty, Moscow, Russian Federation
Alexey A. Sinitsyn
National Research University, Moscow Power Engineering Institute,Electrical Engineering Faculty, Moscow, Russian Federation
Maksim B. Fedorov
National Research University, Moscow Power Engineering Institute,Electrical Engineering Faculty, Moscow, Russian Federation

Abstract


It is shown that to improve the accuracy of Ultrasonic (US) thickness measurements of the large-sized products made of polymeric composite materials it is required to use Phase-Shift Keyed (PSK) Signals, known from Radio Engineering, and to determine echo signal time delay by the maximum of compressed PSK pulse. In order to improve the measurement accuracy US PSK Huffman encoding signals (M-signals) should be used in the continuous repetition mode, providing simultaneously high measurement accuracy and the greatest possible control sensitivity for a given period of repetition of probing pulses.

Keywords


Phase-Shift Keyed Signals, Polymeric Composite Materials, Measurement Accuracy, Ultrasonic Thickness Measurement



DOI: https://doi.org/10.17485/ijst%2F2015%2Fv8i29%2F122254