Blockage detection in pressurized water-filled pipe using high frequency acoustic waves

Nasraoui, Saber; Louati, Moez; Ghidaoui, Mohamed Salah

doi:10.1016/j.ymssp.2022.109817

Cited by 8 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Addressing this issue holds substantial relevance in practical scenarios. For instance, it assists in detecting anomalies in pipeline infrastructures [29,30] and accurately locating acoustic sources in the domain of oceanography [9].…”

Section: Introductionmentioning

confidence: 99%

Adaptive anadromic regularization method for the Cauchy problem of the Helmholtz equation

Omri,

Jday

2023

Inverse Problems

View full text Add to dashboard Cite

In this research work, we investigate the Cauchy problem for the Helmholtz equation. Considering the completion data problem in a bounded cylindrical domain with Neumann and Dirichlet conditions on a part of the boundary. An immediate approximation of missing boundary data is obtained using a method that factorizes the boundary value problem. This factorization uses the Neumann to Dirichlet (NtD) or Dirichlet to Neumann (DtN) operators that satisfy the Riccati equation. Some singularities appear in the solution of the Riccati equation for a particular length of the waveguide of the Helmholtz equation. We elaborate a new numerical method called "adaptive anadromic regularization method" that can solve these operators beyond the singularity. In addition, we introduce a scaling matrix technique to the linear matrix equations associated with the Riccati equations to generate normalized solutions. Our numerical procedure not only approximates missing boundary data, but also provides an error estimate that allows efficient time stepping. Numerical tests proved to confirm the theory even in the presence of high noise levels.

show abstract

Section: Introductionmentioning

confidence: 99%

Adaptive anadromic regularization method for the Cauchy problem of the Helmholtz equation

Omri,

Jday

2023

Inverse Problems

View full text Add to dashboard Cite

show abstract

“…In order to inspect pipelines, different approaches have been proposed, such as magnetic particle testing (MT) [4], eddy current testing (ET) [5], acoustic wave testing (AT) [6], radiographic testing (RT) [7] and, penetration testing (PT) [8]. Among the commonly applied non-destructive testing methods, MT and PT can only be used for surface crack detection [9,10].…”

Section: Introductionmentioning

confidence: 99%

Research on the 3D Reverse Time Migration Technique for Internal Defects Imaging and Sensor Settings of Pressure Pipelines

Peng,

She,

Zheng

et al. 2023

Sensors

View full text Add to dashboard Cite

Although pressure pipelines serve as a secure and energy-efficient means of transporting oil, gas, and chemicals, they are susceptible to fatigue cracks over extended periods of cyclic loading due to the challenging operational conditions. Their quality and efficiency directly affect the safe operation of the project. Therefore, a thorough and precise characterization approach towards pressure pipelines can proactively mitigate safety risks and yield substantial economic and societal benefits. At present, the current mainstream 2D ultrasound imaging technology faces challenges in fully visualizing the internal defects and topography of pressure pipelines. Reverse time migration (RTM), widely employed in geophysical exploration, has the capability to visualize intricate geological structures. In this paper, we introduced the RTM into the realm of ultrasonic non-destructive testing, and proposed a 3D ultrasonic RTM imaging method for internal defects and sensor settings of pressure pipelines. To accurately simulate the extrapolation of wave field in 3D pressure pipelines, we set the absorbing boundary and double free boundary in cylindrical coordinates. Subsequently, using the 3D ultrasonic RTM approach, we attained higher-precision 3D imaging of internal defects in the pressure pipelines through suppressing imaging artifacts. By comparing and analyzing the imaging results of different sensor settings, the design of the observation system is optimized to provide a basis for the imaging and interpretation of actual data. Both simulations and actual field data demonstrate that our approach delivers top-notch 3D imaging of pipeline defects (with an imaging range accuracy up to 97.85%). This method takes into consideration the complexities of multiple scattering and mode conversions occurring at the base of the defects as well as the optimal sensor settings.

show abstract

Composite pipelines: Analyzing defects and advancements in non-destructive testing techniques

Waqar,

Memon,

Sabih

et al. 2024

Engineering Failure Analysis

View full text Add to dashboard Cite

Blockage detection in pressurized water-filled pipe using high frequency acoustic waves

Cited by 8 publications

References 21 publications

Adaptive anadromic regularization method for the Cauchy problem of the Helmholtz equation

Adaptive anadromic regularization method for the Cauchy problem of the Helmholtz equation

Research on the 3D Reverse Time Migration Technique for Internal Defects Imaging and Sensor Settings of Pressure Pipelines

Composite pipelines: Analyzing defects and advancements in non-destructive testing techniques

Contact Info

Product

Resources

About