Ultrasonic quality control of press-fit joints

• Published in: Russian journal of nondestructive testing Vol. 45; no. 8; pp. 575 - 581
• Main Authors: Budenkov, G. A., Ivannikov, V. P., Kabakova, A. V., Strizhak, V. A.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01-08-2009
• Subjects: Acoustic Methods; Amplitudes; Characterization and Evaluation of Materials; Chemistry and Materials Science; Echo surveys; Materials Science; Mathematical analysis; Nondestructive testing; Reflection; Reflection coefficient; Structural Materials; Ultrasonic testing; Ultrasound; Nondestructive Test; Free Ring; Ultrasonic Wave; Wheel Pair; Maximum Absolute Error
• ISSN: 1061-8309; 1608-3385
• DOI: 10.1134/S1061830909080105

A technique for quantitatively evaluating the quality of interference-fit joints by the echopulse method is proposed. A formula is obtained for calculating the value of the coefficient of ultrasound reflection from the site of the joint fit from the measured amplitudes of echo pulses in a free ring and in an assembled joint. It is shown that the reflection coefficient is the main parameter characterizing the quality of an interference-fit joint, i.e., its ability to withstand loads, determined by the maximum value of the torque transferred by a pressure joint, because the reflection coefficient is related to the normal stresses at the contacting surfaces of the joint. To optimize the process of studying the quality of a joint, it is noted that the automation of the testing procedure using the proposed technique is possible and desirable.