Journal articles on the topic 'Ultrasonic testing'

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1

WATANABE, Tomotaro. "Ultrasonic Testing." Journal of the Japan Society for Technology of Plasticity 53, no. 618 (2012): 631–35. http://dx.doi.org/10.9773/sosei.53.631.

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2

Ravichandran, S. "Robotic Ultrasonic Testing." Indian Journal of Science and Technology 10, no. 13 (April 1, 2017): 1–3. http://dx.doi.org/10.17485/ijst/2017/v10i13/103338.

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3

American NDT Inc. "Ultrasonic testing instrumentation." NDT & E International 24, no. 1 (February 1991): 61. http://dx.doi.org/10.1016/0963-8695(91)90814-j.

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4

Mulet, A., J. Benedito, J. Bon, and N. Sanjuan. "Review: Low intensity ultrasonics in food technology / Revisión: Ultrasonidos de baja intensidad en tecnología de alimentos." Food Science and Technology International 5, no. 4 (August 1999): 285–97. http://dx.doi.org/10.1177/108201329900500401.

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Ultrasonic applications can be classified into low intensity or high intensity applications. The latter are used to modify a process or product with ultrasonics, while in low intensity applications the process or product modifies the ultrasonic signal, thus providing information about the product. Low inten sity ultrasonics in food technology can be used to monitor a process (liquid level, flowmeters) or to determine the quality of food products. Since ultrasonic techniques are rapid, non-destructive, easy to automate and relatively inexpensive, the number of applications is rapidly growing in this field. Ultrasonics can also be considered for use in laboratory testing devices to determine physical and chemical properties of foods. Ultrasonics has been used to determine texture, composition and physical state in liquid and solid foods. The commonly measured ultrasonic parameters are velocity, attenua tion and frequency spectrum composition. Velocity is the parameter used most since it is the simplest and most reliable measurement. This paper reviews the basic principles of ultrasonics, the most suit able techniques for each type of application, the testing devices needed to make measurements and the most interesting applications.
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5

G. A, Ibe,. "Ultrasonic Wedges for Testing Of Turbine Blade Roots." International Journal of Engineering Research 4, no. 1 (January 1, 2015): 1–3. http://dx.doi.org/10.17950/ijer/v4s1/101.

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6

NGUYEN, Chanh Nghia, Masaki Sugino, Yu Kurokawa, and Hirotsugu Inoue. "OS6-18 Evaluation of Back Surface Roughness Using Ultrasonic Scattering(Measurement Techniques using Ultrasonics (2),OS6 Ultrasonic non-destructive testing and evaluation,MEASUREMENT METHODS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 89. http://dx.doi.org/10.1299/jsmeatem.2015.14.89.

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7

Zhong, Fei, Wei Zhang, Biao Qiang Jiao, and Yue Xian Zhong. "Survey of Materials Testing Using Ultrasonic." Advanced Materials Research 146-147 (October 2010): 412–16. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.412.

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In this paper, ultrasonic materials testing researches are reviewed. The latest progress of ultrasonic testing technology is introduced, including water-squirting ultrasonic C-scan testing, laser ultrasound, ultrasonic feature scan imaging, signal processing and pattern recognition technology in the application of ultrasonic testing.
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8

Kurokawa, Yu, Masaki Sugino, and Hirotsugu Inoue. "OS6-20 2-Dimensional Back-Surface Roughness Evaluation by Ultrasonic Method(Measurement Techniques using Ultrasonics (2),OS6 Ultrasonic non-destructive testing and evaluation,MEASUREMENT METHODS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 91. http://dx.doi.org/10.1299/jsmeatem.2015.14.91.

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9

MURAI, Junichi. "Ultrasonic Phased Array Testing." JOURNAL OF THE JAPAN WELDING SOCIETY 81, no. 4 (2012): 235–38. http://dx.doi.org/10.2207/jjws.81.235.

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10

Friesel, Mark A. "Ultrasonic testing of materials." Materials Science and Engineering: A 160, no. 2 (February 1993): 281–82. http://dx.doi.org/10.1016/0921-5093(93)90457-p.

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11

Dwicahyo Pratomo, Ivan, Abdul Rouf, and Tri Wahyu Supardi. "Pengukuran Jarak Lubang Pada Benda Padat Menggunakan Sensor Ultrasonik." IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) 6, no. 1 (April 30, 2016): 81. http://dx.doi.org/10.22146/ijeis.10774.

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AbstrakProses pembuatan benda padat pada umumnya, tidak tercetak dengan bagus sehingga bagian lubang tidak bisa dilihat langsung secara visual. NDT (Non Desctructive Testing) adalah metode untuk mendeteksi lubang serta menguji kualitas benda padat tanpa merusak benda padat tersebut salah satunya menggunakan ultrasonik untuk mendeteksi lubang benda padat yang terdapat pada bagian internal benda padat. Penelitian ini bertujuan untuk merancang bangun alat untuk mengukur jarak lubang pada benda padat menggunakan sensor ultrasonik dan osiloskop.Metode yang digunakan penulis untuk pengujian merupakan metode pulsa pantul yang menghasilkan keluaran berupa amplitudo gelombang yang ditampilkan osiloskop. AFG sebagai masukkan pulsa 40 KHz ke rangkaian penguat kemudian pulsa tersebut dikuatkan transformator dan dilanjutkan ke transmitter ultrasonik. Transmitter mengeluarkan pulsa ke objek dan mengalami pemantulan karena memiliki lubang pada internal bendanya. Pantulan tersebut diterima oleh receiver dan dikuatkan oleh rangkaian penguat kembali, kemudian gelombang ditampilkan pada osiloskop.Penelitian ini menunjukkan bahwa semakin kecil jarak lubang maka amplitudo gelombang yang diperoleh menjadi semakin besar, ketika jarak lubang semakin besar maka nilai koefisien atenuasi bernilai semakin besar juga. Nilai kesalahan pada pengukuran menggunakan alat yang dibuat sebesar 5 %. Kata kunci— ultrasonik, NDT (Non Destructive Testing), pulsa pantul, amplitudo Abstract The process of making solid object in general, not print with good so that holes can’t be seen directly visually. NDT (Non Destructive Testing) is a method for detecting holes and the quality of solid objects without damaging solid object one uses ultrasonic to detect holes a solid object which there are on internal solid object. This research aims to design an instrument for measuring distances holes of solid body using ultrasonic sensor and oscilloscope.The method used for the testing is the echo pulse which produce output of the wave amplitude shown oscilloscope. Function generator as input pulses 40 KHz to circuit amplifier then the transformator strengthened and continued to ultrasonic transmitter. Transmitter generated pulse to object and the pulse has reflection because it has holes an internal object. The reflection pulse is received by the receiver ultrasonic sensor and amplified by signal amplifier circuit, then the wave displayed on oscilloscope. The research showed that the smaller distance holes testing the wave amplitude obtained becomes larger and when the distance holes a solid object is longer the attenuation coefficient value the greater worth. The value of measurement error in using a tool value made author of 5 %. Keywords— ultrasonic, NDT (Non Destructive Testing), echo pulse, amplitude
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12

Wang, Xufeng, Xuanlin Wang, Jiyao Wang, and Zhongxi Tian. "Feasibility Study and Prospects of Rock Fragmentation Using Ultrasonic Vibration Excitation." Applied Sciences 10, no. 17 (August 25, 2020): 5868. http://dx.doi.org/10.3390/app10175868.

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This paper systematically examines the feasibility of using ultrasonic vibration excitation for rock breakage and fragmentation; it focuses on the failure mechanisms of rock mass under the impact of ultrasonic waves, and the development of ultrasonic technology. Laboratory testing using a self-designed system was conducted in this paper to further validate the efficiency and reliability of rock breakage using ultrasonics. The results show that: (i) under the effects of both the high speed impact of ultrasonic vibration excitation and induced rock vibration excitation, a fracture is initiated and propagates rapidly within and outside of the rock. Under ultrasonic vibration excitation for 140 s, the compressive strength decreased by 45.6%; (ii) under the excitation of ultrasonics, the rock specimens failed completely in a short time from inside to outside, and there are distinct fissures in the internal nucleation of the rock. It is suggested that ultrasonic excitation provides a novel and promising option for rock fragmentation and breakage, which optimises the efficiency of underground hard rock engineering.
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13

Morgan, L. "Testing defects in automated ultrasonic testing and radiographic testing." Insight - Non-Destructive Testing and Condition Monitoring 60, no. 11 (November 1, 2018): 606–12. http://dx.doi.org/10.1784/insi.2018.60.11.606.

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14

Yamashita, Tohru, and Kaoru Furushima. "OS6-14 Noninvasive Measurement of Temperature Distribution in Tissues by Ultrasonic CT(Measurement Techniques using Ultrasonics (1),OS6 Ultrasonic non-destructive testing and evaluation,MEASUREMENT METHODS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 85. http://dx.doi.org/10.1299/jsmeatem.2015.14.85.

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15

Pujono, Pujono, and Endro Wahyu Galih. "Inspeksi Upper Wing Top Skin Panel Menggunakan Phased Array Ultrasonic Testing (PAUT)." Bangun Rekaprima 4, no. 2 (October 1, 2018): 65. http://dx.doi.org/10.32497/bangunrekaprima.v4i2.1202.

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<em>Non Destructive Testing (NDT) adalah cara yang paling ekonomis untuk melakukan inspeksi dan cara untuk menemukan cacat. Salah satu metode inspeksi NDT adalah Ultrasonic Test yang digunakan untuk inspeksi khusus upper wing dengan menggunakan alat ultrasonic phased array di pesawat. Ultrasonic test memiliki keunggulan di atas seluruh metode NDT untuk kedalaman penetrasi dalam mendeteksi defect yang sangat baik, preparasi penggunaan alat dan benda uji yang tidak rumit dan portable, dan dapat menampilkan informasi jarak pada layar CRT atau LED. Tujuan dalam Inspeksi upper wing top skin panel menggunakan ultrasonic phased array adalah untuk mengetahui cacat korosi pada skin pesawat agar dapat dijadikan dasar dalam melakukan tindakan pencegahan dan perawatan body pesawat. Dalam uji ultrasonik ini penulis menggunakan metode phased array ultrasonic testing (PAUT). Phased array merupakan metode NDT yang dapat mendeteksi cacat dengan cepat dan akurat secara optimal dengan waktu pengerjaan yang seminimal mungkin. Metode ini sendiri agak berbeda dengan ultrasonic testing biasa, transducer/probe ultrasonic phased array ini memiliki 64 element. Dengan kata lain tranducer phased array ini dapat megarahkan dan memfokuskan pancaran gelombang ultrasonicnya. Ada 3 area yang dilakukan uji PAUT yaitu (1) trailing edge dan forward fastener row dari rear spar di Rib bay 3 – 4 dan rib bay 9 – 27, (2) trailing edge dan forward fastener row dari false rear spar. (3) forward fastener row dan after fastener row dari rear spar di rib bay 4-5 dan 5-6. Hasil yang diperoleh adalah terjadi korosi pada Rib 26-Rib 27 pada wing bagian kanan. Korosi ini terjadi pada baut dari rear spar, hal ini karena Mikroorganisme terdapat pada air yang berada pada tanki bahan bakar pesawat, air ini dapat berisi oksida besi dan garam mineral.</em>
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16

Guo, Huan, Osamu Saito, Masatoshi Kubo, Fengming Yu, Qi Wu, and Yoji Okabe. "OS6-5 Ultrasonic Evaluation of Debonding Damage in CFRP Structures with a Finite Width(Acoustic Emission and Ultrasonic Testing of Plates (2),OS6 Ultrasonic non-destructive testing and evaluation,MEASUREMENT METHODS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 76. http://dx.doi.org/10.1299/jsmeatem.2015.14.76.

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17

Zhang, Ji Tang, and C. L. Ning. "Research about Automatic Ultrasonic Testing Technology for the Ring Welding Line of Middling and Small Modulus Gear." Key Engineering Materials 392-394 (October 2008): 347–50. http://dx.doi.org/10.4028/www.scientific.net/kem.392-394.347.

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In order to resolve the problem of being unable to test the ring welding line of middling and small modulus gear by handwork ultrasonic testing due to small size, the automatic ultrasonic testing technology is studied and the automatic ultrasonic testing system has be studied. Normal beam testing adopts the radial incident detection methods from the inside hole surface using a higher frequency focus probe and the better testing result is obtained. The automatic ultrasonic testing system is made up of ultrasonic testing subsystem, mechanism scan subsystem, control subsystem, ultrasonic testing signal processing and display subsystem, and system calibration test pieces .The result of testing can be displayed on the computer screen or printed in the form of curve and statistical data.
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18

Ishii, Hitoshi, Yohei Taguchi, Kazuo Ishii, and Hirofumi Akagi. "OS11W0239 Ultrasonic bending fatigue testing method for thin sheet materials." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2003.2 (2003): _OS11W0239. http://dx.doi.org/10.1299/jsmeatem.2003.2._os11w0239.

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19

Sanimani, Muhammad Nur Farhan, and Ikuo Ihara. "OS6-19 Development of Ultrasonic Method for Roughness Evaluation of Non-Gaussian Surface(Measurement Techniques using Ultrasonics (2),OS6 Ultrasonic non-destructive testing and evaluation,MEASUREMENT METHODS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 90. http://dx.doi.org/10.1299/jsmeatem.2015.14.90.

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20

Zhang, Ji Tang, C. Tan, and X. G. Shen. "A Study on Computer Aided Ultrasonic Testing Scheme Planning." Key Engineering Materials 474-476 (April 2011): 1249–54. http://dx.doi.org/10.4028/www.scientific.net/kem.474-476.1249.

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On the basis of proposing the general ultrasonic testing system, this paper discusses the concept and the composite module of computer aided ultrasonic testing scheme planning. By the thought of ultrasonic testing part family and modularization parameterization design, and the paper induces the needed study to solute the theory question and each key technologies of ultrasonic testing scheme. Finally, it simply introduced the developed computer aided ultrasonic testing scheme planning system of rotational parts.
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21

Kong, Wensheng, Qi Wu, Fengming Yu, and Yoji Okabe. "OS6-2 Evaluation of Fatigue Damages in Aluminum Plates by Nonlinear Ultrasonics Observed by Phase-shifted Fiber Bragg Grating(Acoustic Emission and Ultrasonic Testing of Plates (1),OS6 Ultrasonic non-destructive testing and evaluation,MEASUREMENT METHODS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 73. http://dx.doi.org/10.1299/jsmeatem.2015.14.73.

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22

Mishra, Anjay Kumar. "Analysis of the Variation in Different Nondestructive Testing and Standards." Journal of Advanced Research in Civil and Environmental Engineering 9, no. 1&2 (May 11, 2022): 1–11. http://dx.doi.org/10.24321/2393.8307.202201.

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Non Destructive Testing (NDT) methods are used to review or measure the materials or designs without annihilating their surface, item uprightness and future handiness. The overall objective of the research is to assess the strength of concrete in existing structures using Nondestructive Tests at Kachankawal Rural Municipality, Jhapa District of Nepal.Rebound hammer test and ultrasonic pulse velocity tests were used for determining the compressive strength of concrete. The existing Reinforced Concrete Cement culverts were used for 9 existing structures. Average rebound number were taken and calculated from each sample. From the average rebound number were taken to determine the grade of concrete along with corresponding compressive strength. Similarly, the Ultrasonic Pulse Velocity tests were done on same existing structures and path length and time were noted for assessing the corresponding compressive strength and the quality of concrete. Triangulation among rebound hammer test, ultrasonic pulse velocity test and proposed initial grading were validated using chi square test. Relation between compressive strength with rebound hammer and ultrasonic pulse velocity were analyzed using linear regression model. Chi square confirms variation in compressive strength between calculated compressive strength and standard compressive strength. The relation of compressive strength (y) at R² = 1 with rebound number (x) and ultrasonic pulse velocity (x) could be expressed as y = 0.9306x - 2.7233 and y = 2.904 x + 10.119 respectively. The study is a guiding tool for concern authority and professionals to make effective decision regarding further structural development and budget allocation of the existing structures.
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Feng Qin, Yaojin Wu, Hualing Guo, Bin Zheng, and Hui Liu. "Laser Ultrasonic Nondestructive Testing Based on Nonlinear Ultrasonic Coefficient." Russian Journal of Nondestructive Testing 56, no. 3 (March 2020): 209–21. http://dx.doi.org/10.1134/s1061830920030043.

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24

Fitzka, Michael, Ulrike Karr, Maximilian Granzner, Tomáš Melichar, Martin Rödhammer, Alfred Strauss, and Herwig Mayer. "Ultrasonic fatigue testing of concrete." Ultrasonics 116 (September 2021): 106521. http://dx.doi.org/10.1016/j.ultras.2021.106521.

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25

Hirose, Sadao, and Hiroshi Uragaki. "Remarks when applying ultrasonic testing." Journal of the Japan Welding Society 54, no. 1 (1985): 28–34. http://dx.doi.org/10.2207/qjjws1943.54.28.

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26

HIRASAWA, Hideyuki. "Advanced Technology of Ultrasonic Testing." Journal of the Japan Welding Society 70, no. 4 (2001): 405–8. http://dx.doi.org/10.2207/qjjws1943.70.4_405.

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27

Tatarinov, A. "Ultrasonic testing of the ilium." Journal of Biomechanics 31 (July 1998): 36. http://dx.doi.org/10.1016/s0021-9290(98)80074-2.

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28

Daw, J., B. Tittmann, B. Reinhardt, G. Kohse, P. Ramuhalli, R. Montgomery, H. T. Chien, J. F. Villard, J. Palmer, and J. Rempe. "Irradiation Testing of Ultrasonic Transducers." IEEE Transactions on Nuclear Science 61, no. 4 (August 2014): 2279–84. http://dx.doi.org/10.1109/tns.2014.2335613.

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29

Silk, M. G., and J. P. Weight. "Ultrasonic transducers for nondestructive testing." NDT International 18, no. 4 (August 1985): 219–20. http://dx.doi.org/10.1016/0308-9126(85)90093-8.

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30

Barkhatov, V. A., and R. Ya Valieva. "Ultrasonic testing complex. Synchronization unit." Russian Journal of Nondestructive Testing 36, no. 2 (February 2000): 87–96. http://dx.doi.org/10.1007/bf02759402.

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31

Saka, Masumi. "Ultrasonic Testing of Closed Cracks." Key Engineering Materials 51-52 (January 1991): 489–94. http://dx.doi.org/10.4028/www.scientific.net/kem.51-52.489.

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32

Yan, Xiaoling, Houpu Wang, and Xiaozhi Fan. "Research Progress in Nonlinear Ultrasonic Testing for Early Damage in Metal Materials." Materials 16, no. 6 (March 8, 2023): 2161. http://dx.doi.org/10.3390/ma16062161.

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There are some limitations when conventional ultrasonic testing methods are used for testing early damage in metal parts. With the continuous development of acoustics and materials science, nonlinear ultrasonic nondestructive testing technology has been used for testing of early damage in metal materials. In order to better understand the basic theory and research progress of the nonlinear ultrasonic testing technology, the classical nonlinear ultrasonic theoretical models, including the dislocation monopole model, dislocation dipole model, precipitate-dislocation pinning model, and contact nonlinear ultrasonic theory-microcrack model, are analyzed in depth. This paper introduces the application and research progress of nonlinear ultrasonic detection technology, which is derived from different acoustic nonlinear effects, such as higher harmonic, wave mixing and modulation, sub-harmonic, resonance frequency spectrum analysis, and non-linear ultrasonic phased array imaging. The key technologies and problems are summarized to provide a reference for the further development and promotion of nonlinear ultrasonic non-destructive testing technology.
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33

Gu, Jun Bin. "Analysis on the Nondestructive Testing Method of Concrete Strength." Applied Mechanics and Materials 578-579 (July 2014): 987–90. http://dx.doi.org/10.4028/www.scientific.net/amm.578-579.987.

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Preliminary study the damage of concrete beam by the ultrasonic-rebound method.The contents of the ultrasonic-rebound method are shown below: the concrete rebound value was determined by Rebound method and the ultrasound propagation time in concrete beam was determined by ultrasonic meter to calculate the ultrasonic velocity value in concrete, finally based on the concrete rebound value and the ultrasonic velocity value to confirm the strength of concrete beam.Because of a single rebounding or ultrasonic method is limit in theory and application, and lead to the defect in the application. But the ultrasonic-rebound synthetic method is much better than the above two methods respectively, and it improves the testing precision to apply to the engineering practice.
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34

Mikhaylov, I. V., A. N. Razygraev, and N. P. Razygraev. "Ultrasonic testing through a thickened cladding." Дефектоскопия, no. 10 (December 15, 2023): 76–78. http://dx.doi.org/10.31857/s0130308223100093.

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This paper presents the results of studies of the effect of thickened repair anti-corrosion surfacing on pre-operational and in-service ultrasonic testing (UT) of the reactor vessel metal through anti-corrosion cladding in comparison with ultrasonic testing through standard surfacing provided for by the design documentation [1]. The paper estimates the distortion of acoustic fields of transducers of transverse and longitudinal waves and the detectability of defects during ultrasonic testing through cladding of different thicknesses and cladding with an inclined fusion zone from a thickness of 11 mm to a thickness of 18 mm
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35

Brezak, Danijel, and Dalibor Filipović-Grčić. "Ultrasonic method for testing of power transformers." Journal of Energy - Energija 63, no. 1-4 (July 4, 2022): 114–23. http://dx.doi.org/10.37798/2014631-4169.

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Ultrasonic method of detecting PD is based on the fact that the electrical energy of the PD transforms in a mechanical energy, an ultrasonic acoustic wave that spreads through the transformer to the tank wall. From time difference of wave detection on different sensors, a possible location of the source can be estimated. Ultrasonic method can detect other transformer deficiencies such as loose contacts and local overheating of oil (T>200°C). Three case studies are given in this paper. The first case was where DGA indicates the thermal problem in the oil and the result of ultrasonic testing points at OLTC contacts. In the second case an ultrasonic method was performed after electrical method detected high levels of PD at voltages much lower than the nominal. Ultrasonic method detected non-grounded parts of the returning limb electrostatic screen. In the third case, a failure of transformer, namely a breakdown from the HV bushing end shield, initiated a series of tests on similar transformers installed at the same substation. The assumption was that PD occurred in the shied epoxy insulation and eventually caused the breakdown.
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36

Gong, Qing. "Study on Ultrasonic Testing Equipment EMATEST-BB." Applied Mechanics and Materials 256-259 (December 2012): 2379–82. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.2379.

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EMATEST-BB is a set of ultrasonic testing equipment for automated final examination of bars. The important specific of the equipment (eddy current system +ultrasonic testing system) is that the combined test station allows one to perform acceptance examination of the whole bar: body + surface, at the same testing position. This Paper mainly describes installation, setting-up and operation of software of ultrasonic testing equipment (UTE) computer system.
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37

Wang, Xuerui. "System of ultrasonic non-destructive testing of carbon fiber composite defects." Functional materials 25, no. 1 (March 28, 2018): 180–83. http://dx.doi.org/10.15407/fm25.01.180.

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38

Huang, Yaming, Haoxiang Wu, Yuan Yao, Hongwei Zhao, and Hu Huang. "An Ultrasonic Vibration Scratch Tester for Studying the Scratch Characteristics of Materials under Ultrasonic Vibration Contact Status." Actuators 13, no. 7 (July 11, 2024): 262. http://dx.doi.org/10.3390/act13070262.

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Ultrasonic vibration-assisted machining is a promising technique for improving the removability of materials, especially for difficult-to-machine materials, but the material removal mechanism under ultrasonic vibration status is still far from clear. Scratch testing is generally employed to study the material removal mechanism, but currently, there is a lack of instruments capable of performing scratch testing under ultrasonic vibration. To address this gap, this study developed an ultrasonic vibration scratch tester that can perform quantitative ultrasonic vibration-assisted scratch (UVAS) testing of materials. A prototype was designed and fabricated, followed by characterizing its performance parameters. Comparative experiments of conventional scratch (CS) testing and UVAS testing were performed on AL1050 to investigate the effects of ultrasonic vibration on scratch characteristics, such as the scratch depth and coefficient of friction. It was found that compared to CS testing, UVAS testing, with an amplitude of 1.45 µm and a frequency of 20 kHz, achieved a maximum reduction in the coefficient of friction of approximately 22.5% and a maximum increase in the depth of the residual scratch of approximately 175%. These findings confirm the superiority of ultrasonic vibration-assisted machining and demonstrate the requirement for the development of ultrasonic vibration scratch testers.
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39

Gao, Feng, Gui Ling Liu, and Feng Xian Wang. "Concrete Compression Strength Non-Destruction Detecting with Rebounding and Ultrasonic Synthesis Method." Applied Mechanics and Materials 357-360 (August 2013): 1488–91. http://dx.doi.org/10.4028/www.scientific.net/amm.357-360.1488.

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Regional materials and mixing ratio in Datong region are used to make the concrete testing blocks. The rebounding and ultrasonic non-destruction detecting testing for concrete compression strength were done by using the six types of strength grades concrete standard specimens according to the technical regulation. By using the common software Matlab7.0, the mathematical models between rebounding values, ultrasonic velocity values, rebounding- ultrasonic method values and concrete compression strength were set up by three kinds of functions’ regression analysis. The error analysis showed that the rebounding-ultrasonic non-destruction detecting testing method had higher precision results and was used firstly when the conditions were permitted, compared with the rebounding testing method or the ultrasonic testing method.
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40

Liu, Fuping. "Application of Ultrasonic Phased Array Technology in the Inspection of Small Diameter Pipe Welds on the Heating Surface of Circulating Fluidized Bed Boilers." Journal of Physics: Conference Series 2442, no. 1 (February 1, 2023): 012005. http://dx.doi.org/10.1088/1742-6596/2442/1/012005.

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Abstract As a new type of testing technology, ultrasonic phased array testing technology can achieve the efficiency and quality that other testing methods cannot achieve. This paper gives a comprehensive overview of the application of ultrasonic phased array technology in the inspection of small diameter pipe welds of circulating fluidized bed boiler, analyzes the difficulties in the inspection process, and summarizes the possible non-relevant indications generated by the ultrasonic phased array. This paper can provide a reference for the application of ultrasonic phased array testing technology in the detection of small diameter pipe welds of circulating fluidized bed boilers and has practical significance for the relevant research of ultrasonic phased array testing technology.
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41

Dong, Wei, Zi Wei Zhou, and Zheng Gan Zhou. "Application of Phase-Sensitivity Detector in Air-Coupled Ultrasonic Testing." Applied Mechanics and Materials 170-173 (May 2012): 3125–29. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.3125.

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The signal to noise ration of air-coupled ultrasonic testing is very poor and there is long time pulse residue, so it need adopt appropriate signal processing method to enhancing the SNR of received signal. Factors, which affect the received signal in ultrasonic testing process, is analyzed, phase sensitivity detection technology is presented to process the received signal, and ultrasonic testing information can be acquired by the calculation of phase signal. The principle of super-heterodyne receiver and phase sensitivity detector is introduced; some problem which should be pay attention in ultrasonic testing process is explained. Based on the research result, air-coupled ultrasonic testing system with phase sensitivity detector is constituted. Experiment results of image testing on carbon fiber reinforced plastic plate indicated that, phase sensitivity detection technology can improved signal to noise ratio of system and testing effect in evidence.
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42

Rawicki, Łukasz, and Jacek Słania. "Selected Aspects of Ultrasonic Testing of Difficult Materials." Biuletyn Instytutu Spawalnictwa, no. 5 (October 2020): 33–42. http://dx.doi.org/10.17729/ebis.2020.5/4.

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Welding is considered as a “Special Process”, which means that its quality cannot be readily verified and its successful application requires specialist management, personnel and procedures. It is important to conduct proper testing of the welded joints, including volumetric testing. In this case there are conducted ultrasonic testing, which enable detecting volumetric discontinuities. Ultrasonic testing meets many problems while testing joints with large anisotropy. The problems are caused by the physical phenomena, e.g. transformation, dispersion and absorption of the wave. It is connected with the structure of the material, which cause different propagation of the ultrasonic beam. The article presents the review of the factors affecting the quality of ultrasonic testing.
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G., Gokulnath, Govindaraj R., Mahendran S., and Eazhil K.M. "Testing an FSW Welded Joint of AA2024 and AA6082 Aluminium Plate using Ultrasonic and Penetrant Testing Method." Bonfring International Journal of Industrial Engineering and Management Science 8, no. 1 (March 30, 2018): 09–11. http://dx.doi.org/10.9756/bijiems.8359.

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44

Stachurski, M. "Modern ultrasonic transducers and methods for ultrasonic testing of materials." Welding International 22, no. 4 (April 2008): 218–24. http://dx.doi.org/10.1080/09507110802121794.

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45

Slavin, A. V., M. A. Dalin, I. A. Dikov, A. S. Boychuk, and V. Yu Chertishchev. "CURRENT TRENDS IN DEVELOPMENT OF ACOUSTIC NON-DESTRUCTIVE TESTING METHODS IN AVIATION INDUSTRY (review)." Proceedings of VIAM, no. 12 (2021): 96–106. http://dx.doi.org/10.18577/2307-6046-2021-0-12-96-106.

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The document includes the below main trends in development of acoustic non-destructive testing methods in aviation industry: automation and enhancement of the sensitivity the testing, development of Procedures for acoustic non-destructive testing methods for products in case of repair and use of products, probabilistic assessment of the outcomes of the ultrasonic non-destructive testing, mathematic simulation of the ultrasonic non-destructive testing, development of the ultrasonic non-destructive testing by applying state-of-the-art technologies, development of the low-frequency acoustic testing methods, development of a Procedure on training of specialists who conduct NDT. The experience of NRC «Kurchatov institute» – VIAM is pointed out to show an example on the implementation of main trends on ultrasonic testing development.
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46

Honda, Haruki, Seung-Wook Han, Sang-Jae Yoon, Nak-Sam Choi, and Kazuo Arakawa. "OS6-4 Fracture Evaluation of Laminated CFRP using Acoustic Emission(Acoustic Emission and Ultrasonic Testing of Plates (2),OS6 Ultrasonic non-destructive testing and evaluation,MEASUREMENT METHODS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 75. http://dx.doi.org/10.1299/jsmeatem.2015.14.75.

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47

Kowalczyk, Jakub, Marian Jósko, Daniel Wieczorek, Kamil Sędłak, and Michał Nowak. "The Influence of the Hardness of the Tested Material and the Surface Preparation Method on the Results of Ultrasonic Testing." Applied Sciences 13, no. 17 (September 1, 2023): 9904. http://dx.doi.org/10.3390/app13179904.

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Non-destructive ultrasonic testing can be used to assess the properties and condition of real machine elements during their operation, with limited (one-sided) access to these elements. A methodological question then arises concerning the influence of the material properties of such elements and the condition of their surfaces on the result of ultrasonic testing. This paper attempts to estimate the influence of material hardness and surface roughness on the result of such testing study area testing machine or plant components of unknown exact thickness. Ultrasonic testing was carried out on specially prepared steel samples. These samples had varying surface roughness (Ra from 0.34 to 250.73 µm) of the reflection surface of the longitudinal ultrasonic wave (the so-called reflectors) and hardness (32 and 57 HRC). The ultrasonic measures were the attenuation of the wave, estimated by the decibel drop in the gain of its pulses, and the propagation velocity of the longitudinal ultrasonic wave. Ultrasonic transducers (probes) of varying frequencies (from 2 to 20 MHz), excited by a laboratory and industrial defectoscope were used as the source of such a wave. The results of our research provide a basis for the recommendation of two considered ultrasonic quantities for assessing the material properties of the tested element. This is of particular importance when testing machines or plant components of unknown exact thickness and unknown roughness of inaccessible surfaces, which are the reflectors of the longitudinal ultrasonic wave used for testing. It has been demonstrated that by using the ultrasonic echo technique, it is possible to evaluate the roughness and hardness of the tested elements.
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Morimitsu, T., T. Yabuta, T. Tsujimura, and T. Nakayama. "Nondestructive Testing of Resin Mortar Using Ultrasonic Pulses." Journal of Vibration and Acoustics 107, no. 2 (April 1, 1985): 229–34. http://dx.doi.org/10.1115/1.3269249.

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A quick-setting resin mortar has been developed to accomplish a new small diameter shield tunneling method. A nondestructive testing method employing ultrasonic pulses is used for estimating the strength of resin mortar. Young’s modulus, the density, the strength, and the ultrasonic velocity of resin mortar of varying contents are measured. The experimental and theoretical results show the possibility of nondestructive testing of resin mortar strength properties by using ultrasonic pulses.
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49

Hopko, Sandra N., I. Charles Ume, and Dathan S. Erdahl. "Development of a Flexible Laser Ultrasonic Probe." Journal of Manufacturing Science and Engineering 124, no. 2 (April 29, 2002): 351–57. http://dx.doi.org/10.1115/1.1379369.

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Ultrasonics is a widely used nondestructive testing technique, which is often applied off-line for weld quality inspection. Laser ultrasonic (LU) inspection systems have the potential for on-line application, providing the means to identify unacceptable welds as they are formed. Because LU systems are non-contacting, they can be used for testing moving specimens or for operation in hazardous and/or high temperature environments. A highly versatile system can be created when an optical fiber delivery system is incorporated into the design. Introduction of a focusing objective increases the allowable working distance and permits stronger generation using material ablation as the generating mechanism. This paper describes the development of a laser ultrasonic probe using an optical fiber delivery system with a distal end, focusing objective. The optical fiber delivery system can be configured as a single fiber source, a linear array (fiber bundle) or a phased array. Results include experimentally obtained directivity patterns demonstrating ultrasonic generation using ablation sources. Thermoelastic source results are also included. This paper demonstrates the potential of the fiber tool and presents an overview of the weld control scheme.
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Boychuk, A. S., I. A. Dikov, A. S. Generalov, and V. Yu Chertishchev. "ULTRASONIC TESTING OF SPESIMENS AT THE DEVELOPMENT AND TESTING PROCESS OF NEW CFRP GRADES." Proceedings of VIAM, no. 12 (2021): 86–95. http://dx.doi.org/10.18577/2307-6046-2021-0-12-86-95.

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Nondestructive testing results of carbon fiber reinforced plastics (CFRP) specimens at the development and testing process are given at that paper. Ultrasonic pulse-echo technique is the most applicable for CFRP monolithic panels and curved beam specimens testing. It is shown that ultrasonic testing allows optimizing the mode in the process of developing molding modes for new CFRP grades. At the test stages it allows to exclude defective specimens from the testing process and estimate the sorts and damage sizes after the tests.
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