A mathematical model of the ultrasonic detection of three-dimensional cracks

✍ Scribed by Ye.V. Glushkov; N.V. Glushkova; A.V. Yekhlakov

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 855 KB
• Volume: 66
• Category: Article
• ISSN: 0021-8928
• DOI: 10.1016/s0021-8928(02)00019-9

✦ Synopsis

A mathematical model of the main stages of the process of ultrasonic detection of deep three-dimensional cracks of arbitrary orientation in a uniform medium and of horizontal interfacial cracks is developed using a single boundary-integral approach. A description of the construction of the asymptotic form of the source field and of the calculation of both the energy scattering coefficient and the generalized Auld electromechanical coupling coefficient is given. Numerical results are presented which show how the scan-image of the crack depends on the ratio of its dimensions to the wavelength, on the form and orientation in space, and also the effect of the ratio of the elastic properties of the materials on the scattering coefficient of an interfacial crack situated between them. 0