Amplitude-frequency spectrum of acoustic signal from the model crack

I.O. Shaymardanova, A.I. Pshenichnyuk show affiliations and emails
Received: 29 November 2012; Revised: 30 November 2012; Accepted: 19 December 2012
This paper is written in Russian
Citation: I.O. Shaymardanova, A.I. Pshenichnyuk. Amplitude-frequency spectrum of acoustic signal from the model crack. Lett. Mater., 2012, 2(4) 222-226


In this paper we propose a variant of the crack, where it could be visible in the amplitude-frequency spectrum of the signal. In our opinion, the main drawback of the standard model of crack formation is the assumption that it was an instant halt. We propose to look for a crack in her characteristic radiation associated with inertial effects, manifested in the variation of the crack in its disclosure.

References (7)

1. L. Yang, Y.C. Zhou, W.G. Mao, C. Lu, Real-time acousticemission testing based on wavelet transform for thefailure process of thermal barrier coatings, Appliedphysics letters 93, 231906(2008).
2. J.D.Achenbach, Wave propagation in elastic solids, North-Holland Publishing Company. (1973).
3. C.-K.Fang. Journal of Nondestructive Evaluation, 16 (4), 175 (1997).
4. A.N.Ceranoglu, Ph.D. thesis Acoustic emission propagationof elastic pulses in a plate, (1979).
5. P.B.Bogert, PhD thesis Transient waves from emissionsources in isotropic plates using a higher order extensionaland bending theory. Raleigh, North Carolina, 145 (2010).
6. Ch.Zhang, D.Gross. Computational mechanics publicationsSouth Hampton, UK, Boston, USA, (1998).
7. L.D. Landau, E.M. Livshic, Theory of elasticity, Moscow«Nauka», (1987). (in Russian) [Л.Д.Ландау, Е.М.Лившиц, Теория упругости, Москва «Наука», (1987).