Calculation and optimization of waveguide geometry for acoustic emission signals

• Autorzy: Skalsky V. , Serhiyenko O. , Selivonchyk T. , Tolopko Y.
• Języki publikacji: EN

Abstrakty

EN

Optimization of geometrical sizes of the waveguide of elastic acoustic emission (AE) waves, which is used in the search of hydrogen induced cracking during thermal cycling of structure alloys in a gaseous hydrogen environment, is considered. A waveguide is considered as on acoustic system that has the discrete spectrum of eigenfrequencies. Distribution of temperature field along the waveguide is calculated, decay of elastic AE waves is estimated. Basing on the obtained results the design implementation of the waveguide is carried out.

Słowa kluczowe

EN

acoustic emission; finite elements method; waveguide; energy losses; temperature distribution

PL

emisja akustyczna; metoda elementów skończonych; strata energii; temperatura; falowód

• Wydawca: Polskie Towarzystwo Diagnostyki Technicznej
• Czasopismo: Diagnostyka
• Rocznik: 2009
• Tom: nr 1(49)
• Strony: 3--6
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Skalsky V.

autor

Serhiyenko O.

autor

Selivonchyk T.

autor

Tolopko Y.

• H. V. Karpenko Physico-Mechanical Institute of National Academy of Sciences of Ukraine, Lviv, Naukova Str 5., Lviv, 79601, Ukraine,

Bibliografia

• [1] Skalsky V. R., Koval P. M.: Acoustic emission in fracture of materials, wares and structures. Methodological aspects of selection and processing of information. Lviv, Spolom, 2005.
• [2] Imenitova V., Chernyshev B. V., Shegai V. V.: On the calculation of free vibrations of elastic cylinders of finite length Reports of Academy of Sciences of USSR. 1976, Vol. 226, No.2, P. 315.
• [3] Grinchenko V. Т.: Equilibrium and steady-state vibration of elastic bodies of finite sizes. Kiev, Naukova Dumka, 1978.
• [4] Lysak M. V., Skalsky V. R., Serhiyenko O. M.: Investigation of waveguide effect on the change in parameters of acoustic emission signals. Physico-chemical mechanics of materials. 1994, No 2, P. 64.
• [5] Andreykiv A. Е.: Spatial problems of crack theory. Kiev, Naukova Dumka, 1982.
• [6] Kikuchi Е.: Ultrasonic transducers Moscow, Mir, 1972.
• [7] Zinkevich О. К.: Finite element method in engineering. Moscow, Mir, 1975.
• [8] Skalsky V. R., Koval P. M., Serhiyenko O. M., Lototsky Yu. L.: Research of hardening of concrete using the signals of acoustic emission. Physico-chemical mechanics of materials, 2004, No 5, P.104.
• [9] Skalsky V. R.: Some methodological grounds of devise development for transferring acoustic emission, Engineering Science, 2001, No7, P.49.
• [10] Skalsky V. R., Augutis V. N., Vainman A. B.: Devices for selection of acoustic emission signals, Proc. of Karpenko Physico-Mechanical Institute of National Academy of Sciences of Ukraine “Physical methods and devices for testing environments, materials and wares”, Kyiv - Lviv, 2001. Vol.6, P. 77.
• [11] Tripalin A. S., Builo S. I.: Acoustic emission: Physico-mechanical aspects. Rostov-on-Don: Publ. House of Rostov State University, 1986.