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2021
Journal of Pressure Vessel Technology
Buried Pipe Modeling With Initial Imperfections2004 •
A formulation using the finite element method is presented in this paper to analyze stresses and displacements of underground pipelines with initial imperfections. The formulation includes both thermal expansion of the pipeline and internal pressure. The method is based on large deformation beam theory with the finite element formulation based on Euler-Bernoulli beam elements of constant cross-section. The pipe-soil interaction is modeled as a nonlinear elastic foundation in the problem formulation. The resulting nonlinear finite element model with appropriate boundary conditions is solved using full Newton-Raphson as the iterative procedure. Numerical examples are provided to show the application of the methodology and to demonstrate the effect of the initial imperfections in the stress distribution of a buried pipe. The results show that initial imperfections have a considerable influence on the stress distribution of buried pipelines, leading in some cases to stress levels above ...
IEEE Transactions on Geoscience and Remote Sensing
Analysis of the distorted Born approximation for subsurface reconstruction: truncation and uncertainties effects2003 •
Measurement Science and Technology
Electrical resistance tomography to detect leaks from buried pipes2001 •
Le Centre pour la Communication Scientifique Directe - HAL - Université Francois Rabelais - Tours
A wave finite element strategy based on time of flight analysis to localize defects in networks of pipes2022 •
Structural Health Monitoring-an International Journal
Passive Tomography by Elastic Guided Wave for Corrosion Detection in Pipelines2019 •
Corrosion presents a major challenge for various industries, especially for petrochemical and nuclear industry. Estimating accurate wall thickness maps of pipes or pressure vessels is of great importance for detecting corrosion damage in these structures and assessing its remaining lifetime. Guided wave tomography provides a solution for this problem in which pipe-like structures have a high diameter to thickness ratio, by sending guided waves through the region of interest, then using tomographic imaging [1, 2] to reconstruct the thickness map, significantly eliminating the need to take measurements at all points across the surface. The Structural Health Monitoring (SHM) process involves the observation of a structure over time by using measurements from sensors embedded in this structure in order to monitor its current state of health and hence taking at the right time corrective action to prevent further rupture or leakage. It is essential to use a small number of sensors to limi...
Progress In Electromagnetics Research
BISTATIC TOMOGRAPHIC GPR IMAGING FOR INCIPIENT PIPELINE LEAKAGE EVALUATION2010 •
Journal of Petroleum and Gas Engineering
Pipe irregularities mapping using tomographic instrumentation system2021 •
2019 •
Pipes that carry gas into residential buildings are one of the most important infrastructures in cities. These pipes are prone to corrosion after a period of time because of different environmental factors. In order to avoid any pipe rupture that may cause explosion, the integrity of such pipes much be checked on a regular basis. Ultrasonic guided wave is an effective method for structural health monitoring of plate like structures and pipes. However, the signals that are obtained from guided waves can be very difficult to interpret due to mode conversion, overlapped modes and dispersion effect. In order to extract meaningful information of guided wave signals, using advanced signal processing methods are inevitable. The problem of dispersion effect is taken care by the method called matching pursuit. The separation of overlapped modes is contributed by another method called smooth empirical mode decomposition. Dispersion means that the velocity of the propagating wave is a function...
Дурново Н.Н. Русские рукописи XI и XII в. как памятники старославянского языка : [Окончание] / Николай Дурново. – Београд, 1926-1927. – С. 93-117. – Отдельный оттиск из: Jужнословенски филолог, кн. 6.
Н.Н. Дурново. Русские рукописи XI и XII в. как памятники старославянского языка. [Окончание]Gradjevinski materijali i konstrukcije
Lateral capacity and deformations of vertical piles loaded by horizontal forcesDiscurso, Cultura e Psicanálise (NASCIMENTO, J; CHAVES, R. orgs)
Entre sujeito, sentido e história: artimanhas entre uma análise do discurso e uma psicanálise2024 •
Studies in History and Philosophy of Science
A tale of a threshing machine: Images of the Voigt-Leibniz mathematical-agricultural machine at the beginning of the 18th century2024 •
Journal of Nursing and Health
Reinterpretando as plantas medicinais a partir do referencial yin-yang da Medicina Tradicional ChinesaPtolemy's Science of the Stars in the Middle Ages
Revamping Ptolemy's Proof for the Sphericity of the Heavens: Three Arabic Commentaries on Almagest I.3 Y. Tzvi lanGermann2020 •
Contrastes. Revista Internacional de Filosofía
Del vacío clásico al vacío cuánticoAnalisi e Diritto
Non-Application and Justified Violation of Norms. A Proposal for the Study of Defeasibility in the Theory of Law2023 •
Trade and Seafaring in Antiquity Red Sea – Persian Gulf – Indian Ocean Proceedings of the 1st Muziris Workshop, Trier, 28th May 2021 Edited by Stefan Baumann, Kerstin Droß-Krüpe, Sebastian Fink, Sven Günther and Patrick Reinard
Patterns or Topoi? Modes of Socio-Economic Behavior of the Seres as Perceived by Greek and Latin Sources in Augustan Times2023 •
American Journal of Surgical Pathology
Handling and Staging of Renal Cell Carcinoma2013 •
International Journal of Cosmetic Science
Study of sensory properties of emollients used in cosmetics and their correlation with physicochemical properties2005 •
Science and Innovations
The choice of scaffold and conditions for mesenchymal stem cells differentiation for the bone repair2019 •
TÜRKİYE'DE ASGARİ ÜCRETİN GELİŞİMİ, MEVZUAT
YILDIRIM KOÇ, TÜRKİYE’DE ASGARİ ÜCRETİN GELİŞİMİ, MEVZUAT2012 •
Water Resources Research
Extending Theis' solution: Using transient pumping tests to estimate parameters of aquifer heterogeneity2016 •
Transactions of the Charles S. Peirce Society
Trading on Shifting Grounds: Risse and Wollner's On Trade Justice2024 •
Studia Linguistica Universitatis Iagellonicae Cracoviensis
Some Remarks on the Language of Modern Tajik Public Inscriptions (Part I)2018 •
International Journal of Molecular Sciences
Laparoscopic Sleeve Gastrectomy in Patients with Severe Obesity Restores Adaptive Responses Leading to Nonalcoholic Steatohepatitis2022 •