Calculation of DGS diagrams for elliptic flat-bottom holes
Source abstract
Abstract
The DGS diagrams for a normal transducer and a model of a reflector—an elliptic flat-bottom hole—have been calculated via numerical calculation of the integral representation of the normalized amplitude of a detected signal. The boundary of the reflecting surface is specified by the angular-coordinate-dependent distance from the center to the current point on the contour. Examples of calculations are presented. An effect of the shape of the hole on the change in the DGS curves, which is especially pronounced in the near-field zone, has been established.
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Research context
OpenAlex topics: Engineering Diagnostics and Reliability · Metal Forming Simulation Techniques · Mechanical stress and fatigue analysis
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References (12)
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1. Ermolov, I.N., Kontrol’ ul’trazvukom (kratkii spravochnik) (Ultrasonic Testing: Concise Handbook), Moscow: NPO “TsNIITMASh”, 1992.
2. Ermolov, I.N., Vopilkin, A.Kh., and Badalyan, V.G., Raschety v ul’trazvukovoi defektoskopii (kratkii spravochnik) (Calculations in Ultrasonic Flaw Detection: Concise Handbook), Moscow: NPTs NK “EKhO+”, 2000.
3. Ermolov, I.N. and Lange, Yu.V., Nerazrushayushchii kontrol’. T. 3. Ul’trazvukovoi kontrol’. Spravochnik (Nondestructive Testing. Ultrasonic Testing: A Handbook), Moscow: Mashinostroenie, 2004, vol. 3.
4. Ermolov, I.N. and Vopilkin, A.Kh., Calculation of Equivalent Sizes for Certain Simulated Defects, Defektoskopiya, 1998, no. 4, pp. 3–10.
5. Danilov, V.N. and Ermolov, I.N., Calculation of DGS Diagrams, Defektoskopiya, 2000, no. 7, pp. 35–43 [Rus. J. Nondestr. Test. (Engl. Transl.), 2000, vol. 36, no. 7, pp. 491–498].
6. Danilov, V.N. and Ermolov, I.N., Calculation of DGS Diagrams from the Echo-Signal Maximum, Defektoskopiya, 2000, no. 12, pp. 35–42 [Rus. J. Nondestr. Test. (Engl. Transl.), 2000, vol. 36, no. 12, pp. 889–895].
7. Yamshchikov, V.S., Danilov, V.N., and Shkuratnik, V.L., Features of Excitation and Reception of Elastic Waves in a Solid by a Piston-Type Transducer, Defektoskopiya, 1983, no. 3, pp. 16–23.
8. Danilov, V.N., Calculation of Echo Signals from a Flat-Bottom Hole for Normal Transducers, Defektoskopiya, 2007, no. 11, pp. 23–33 [Rus. J. Nondestr. Test. (Engl. Transl.), 2000, vol. 36, no. 11, pp. 724–732].10.1134/S1061830907110034 ↗
9. Bronshtein, I.N. and Semendyaev, K.A., Spravochnik po matematike dlya inzhenerov i ichashchikhsya vuzov (Handbook on Mathematics for Engineers and Students of Higher Engineering Schools), Moscow: Nauka, 1964.
10. Prudnikov, A.P., Brychkov, Yu.A., and Marichev, O.I., Integraly i ryady. Elementarnye funktsii (Integrals and Series. Elementary Functions), Moscow: Nauka, 1981.
11. Beitmen, G. and Erdein, A., Vysshie transtsendentnye funktsii, (Higher Transcendent Functions), Moscow: Nauka, 1974, vol. 2.
12. Ermolov, I.N., Teoriya i praktika ul’trazvukovogo kontrolya (Theory and Practice of Ultrasonic Testing), Moscow: Mashinostroenie, 1981.