Monitoring and Imaging of Bolted Steel Plate Joints Using Ultrasonic Guided Waves

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Jay Kumar Shah ◽  
Abhijit Mukherjee
Keyword(s):  
Piezoelectric Ceramic ◽  
Guided Waves ◽  
Steel Plate ◽  
Steel Structures ◽  
Ultrasonic Waves ◽  
Bolted Joints ◽  
Ultrasonic Guided Waves ◽  
Automated Method ◽  
Non Destructive ◽  
Joint Integrity

Abstract Steel structures with bolted joints are easily dismantled and repurposed. However, maintaining joint integrity is a challenge. This paper reports a non-destructive methodology to monitor steel bolted joints. Piezoelectric ceramic patches have been surface bonded in the joint for transmission and reception of guided ultrasonic waves. Both single and multiple bolted joints have been investigated. It has been demonstrated that the variation in acoustic impedance due at the bolt interface can be discerned and calibrated with bolt torque level. The recorded reflections from interfaces are used as inputs for a newly developed imaging algorithm. The proposed method has the potential to be a reference-free and fully automated method.

Study on Ultrasonic Guided Waves in Fluid-Filled Pipes Surrounded by Water

2006 ◽  
Author(s):  
Shijiu Jin ◽  
Liying Sun ◽  
Guichun Liu ◽  
Yibo Li ◽  
Hong Zhang
Keyword(s):  
Guided Waves ◽  
Guided Wave ◽  
Ultrasonic Waves ◽  
Ultrasonic Guided Waves ◽  
Fluid Loading ◽  
Inspection Method ◽  
Ultrasonic Guided Wave ◽  
Oil Company ◽  
Non Destructive ◽  
Good Agreement

A new non-destructive pipe inspection method, ultrasonic guided wave method as well as the comparison between ultrasonics and guided waves is introduced. An investigation of the guided ultrasonic waves traveling along pipes with fluid loading on the inside and outside of the pipe is described. The effect of inner and outer media has been researched by considering a steel pipe with air and water inside and outside the experimental pipe. Site experiment was carried out on a heating pipe in the resident area of Bohai Oil Company, China. A typical cylindrical guided wave, longitudinal guided wave was used to examine pipes with artificial defects and its propagation characteristics along the pipe were studied. Good agreement has been obtained between the experiments and predictions for pipes with different loading on the pipe.

scholarly journals Non-Destructive Inspection of Impact Damage in Composite Aircraft Panels by Ultrasonic Guided Waves and Statistical Processing

Materials ◽  
2017 ◽  
Vol 10 (6) ◽  
pp. 616 ◽  
Author(s):  
Margherita Capriotti ◽  
Hyungsuk E. Kim ◽  
Francesco Lanza di Scalea ◽  
Hyonny Kim
Keyword(s):  
Guided Waves ◽  
Impact Damage ◽  
Statistical Processing ◽  
Ultrasonic Guided Waves ◽  
Non Destructive ◽  
Aircraft Panels

scholarly journals Application of ultrasonic guided waves for non-destructive testing of large and complex geometry engineering structures

2017 ◽  
Vol 14 ◽  
pp. 87-90 ◽  
Author(s):  
Renaldas Raišutis ◽  
Rymantas Kažys ◽  
Liudas Mažeika ◽  
Egidijus Žukauskas ◽  
Reimondas Šliteris ◽  
...  
Keyword(s):  
Guided Waves ◽  
Complex Geometry ◽  
Ultrasonic Guided Waves ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Engineering Structures ◽  
Non Destructive

Time Reversal Technique for Ultrasonic Guided Wave Inspection

2006 ◽  
Vol 321-323 ◽  
pp. 776-779
Author(s):  
Hak Joon Kim ◽  
Sung Jin Song ◽  
Jung Ho Seo ◽  
Jae Hee Kim ◽  
Heung Seop Eom
Keyword(s):  
Time Delay ◽  
Power Plant ◽  
Time Reversal ◽  
Nuclear Power ◽  
Guided Waves ◽  
Performance Enhancement ◽  
Guided Wave ◽  
Ultrasonic Waves ◽  
Ultrasonic Guided Waves ◽  
Ultrasonic Guided Wave

For the long range inspection of structures in nuclear power plant using array transducers, it is necessary to focus waves on defects under interrogation. To take care of such a need, in this study we adopt a time reversal technique that is claimed to be very robust to focus ultrasonic waves on defects. Specifically, we calculate the appropriate time delay using the time reversal technique and re-generate ultrasonic guided waves that are focusing to an interrogated defect with the calculated time delay. In this paper, we describe the principle of the time reversal technique briefly and present the performance enhancement obtained by the time reversal techniques.

Non-Destructive Test of the Steel Bar by Using Piezoceramics Sheets

2013 ◽  
Vol 718-720 ◽  
pp. 692-697 ◽  
Author(s):  
Zhu Peng Zheng ◽  
Ying Lei ◽  
Xue Peng Cui ◽  
Song Yu
Keyword(s):  
Guided Waves ◽  
Piezoelectric Ceramics ◽  
Ultrasonic Guided Waves ◽  
Destructive Test ◽  
Steel Bar ◽  
Non Destructive

Piezoelectric ceramics sheets are used to excite and receive ultrasonic guided waves in a steel bar. The multi-modes and disperse characteristics of guided waves within that are investigated theoretically and experimentally. The results show that ultrasonic guided waves can be generated and received by piezoelectric ceramics sheets which can be used to measure the length of the steel bar and detect the defection in it.

scholarly journals Assessment of the Structural Integrity of Timber Utility Poles Using Ultrasonic Waves

2021 ◽  
Keyword(s):  
Wave Propagation ◽  
Guided Waves ◽  
Structural Integrity ◽  
Numerical Data ◽  
Ultrasonic Waves ◽  
Propagation Characteristics ◽  
Utility Pole ◽  
Utility Poles ◽  
Non Destructive ◽  
Wave Modes

Abstract. In this study, guided stress waves were used to evaluate the conditions of a timber utility pole experimentally and numerically using COMSOL Multiphysics. Macro Fiber Composites (MFCs), due to their flexibility and convenience to install on curved surfaces, were used to actuate and sense guided waves along the tested specimens. Based on the wave propagation characteristics in these types of structures, an MFC actuator ring, which was developed in the previous work, was applied to tune and enhance the propagating wave modes of interest. The designed ring was used to excite longitudinal ultrasonic wave modes, mainly L(0,1), for the purpose of determining the embedded length of the pole. For the damage localization a single MFC excitation was used which proved to be more efficient than the actuator ring. Embedding the timber in soil had minimum impact on the wave propagation characteristics, given that the waves were confined in the timber pole with minimal leakage to the surrounding. The embedded length was determined accurately for sound and damage timber, using both experimental and numerical data with an error of less than 3 %. The deterioration in the timber structure, within the embedded region, was also evaluated with high accuracy of 93 %. Based on the obtained results, guided waves have high potential to be used as a non-destructive tool for the assessment and evaluation of timber utility poles.

An analytical study of the scattering of ultrasonic guided waves at a delamination-like discontinuity in a plate

2017 ◽  
Vol 231 (16) ◽  
pp. 2947-2960 ◽  
Author(s):  
Christoph Schaal ◽  
Suzhou Zhang ◽  
Himadri Samajder ◽  
Ajit Mal
Keyword(s):  
Rayleigh Wave ◽  
Analytical Study ◽  
Guided Waves ◽  
Lamb Waves ◽  
Transversely Isotropic ◽  
Analytical Framework ◽  
Ultrasonic Waves ◽  
Ultrasonic Guided Waves ◽  
The Individual ◽  
Wave Conversion

Interface delaminations between individual plies in a composite, or disbonds of face sheets in honeycomb structures often remain undetected. Using guided ultrasonic waves (Rayleigh and Lamb waves) such hidden defects can be detected. In this work, an analytical framework that considers propagating, nonpropagating and evanescent waves to analyze the scattering of an incident ultrasonic wave at a delamination-like discontinuity is presented. Wave conversion at the interface of the damage is quantified in terms of the power flows of the individual waves. The analytical solutions are compared with results from numerical simulations. For an incident Lamb wave, excellent agreement is found. However, it is shown that the analytical solution for an incident Rayleigh wave has significant differences from the numerical results, due to the incomplete nature of the Rayleigh wave-field in the half-space. Even though this study is performed for isotropic waveguides, the method can be extended to transversely isotropic laminates by substituting the corresponding expressions for the dispersion equations, as well as displacement and stress fields.

Application of ultrasonic guided waves for non-destructive testing of defective CFRP rods with multiple delaminations

2010 ◽  
Vol 43 (5) ◽  
pp. 416-424 ◽  
Author(s):  
Renaldas Raišutis ◽  
Rymantas Kažys ◽  
Egidijus Žukauskas ◽  
Liudas Mažeika ◽  
Alfonsas Vladišauskas
Keyword(s):  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Non Destructive
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