Πλοήγηση ανά Θέμα "Pipelines"

Analysis and Behavior of Steel Pipe Welded Lap Joints in Geohazard Areas

Karamanos S.A., Koritsa E., Keil B., Card R.J. (2015)

Using advanced finite element simulation tools, which account for both geometric and material nonlinearities, the bending capacity of welded lap pipeline joints is investigated. Following the analysis of plain pipes, ...

Analysis and design of buried steel water pipelines in seismic areas

Karamanos S.A., Sarvanis G.C., Keil B.D., Card R.J. (2017)

This paper offers an overview of available methodologies and provisions for the structural analysis and mechanical design of buried welded steel water pipelines subjected to earthquake action. Both transient (wave-shaking) ...

Analytical methodologies for buried pipeline design in geohazard areas

Sarvanis G.C., Karamanos S.A. (2016)

In geohazard areas, buried pipelines are subjected to permanent ground deformations, which constitute major threats for their structural safety. Geohazards include seismic fault movement, liquefaction-induced lateral ...

Analytical model for the strain analysis of continuous buried pipelines in geohazard areas

Sarvanis G.C., Karamanos S.A. (2017)

In geohazard areas, buried pipelines are subjected to permanent ground-induced deformations, which constitute major threats for their structural safety. Geohazards include seismic fault movement, liquefaction-induced lateral ...

ASML: Algorithm-Agnostic Architecture for Scalable Machine Learning

Diamantis D.E., Iakovidis D.K. (2021)

Machine Learning (ML) applications are growing in an unprecedented scale. The development of easy-to-use machine-learning application frameworks has enabled the development of advanced artificial intelligence (AI) applications ...

Automated Recognition of healthy Anterior Cruciate Ligament in Sagittal MR images using Lightweight Deep Learning

Siouras A., Moustakidis S., Giannakidis A., Chalatsis G., Malizos K.N., Hantes M., Tasoulis S., Tsaopoulos D. (2022)

Anterior cruciate ligament (ACL) tears are very common among athletes. The success of enhanced ACL injury therapy hinges on accurate and cost-effective detection. Deep learning-based techniques have recently dominated ACL ...

Bending response of lap welded steel pipeline joints

Sarvanis G.C., Chatzopoulou G., Fappas D., Karamanos S.A., Keil B.D., Lucier G., Gobler F., Mielke R.D. (2020)

The paper presents a combined experimental and numerical investigation of the bending response of lap welded joints in pressurized steel water pipelines. It is motivated by the structural performance of large-diameter steel ...

Buckling of internally-pressurized spiral-welded steel pipes under bending

Papadaki C.I., Chatzopoulou G., Sarvanis G.C., Karamanos S.A. (2018)

The mechanical behavior of spiral-welded large-diameter steel pipes is simulated, with the purpose of defining their bending deformation capacity against local buckling. The steel pipes are candidates for hydrocarbon onshore ...

Buckling of unconfined and confined thin-walled steel cylinders under external pressure

Vasilikis, D.; Karamanos, S. A. (2008)

The present paper investigates the structural stability of thin-walled steel cylinders subjected to uniform external pressure. A brief discussion of unconfined steel cylinder buckling is presented first. Subsequently, ...

Buried steel pipelines crossing strike-slip faults

Vazouras, P.; Karamanos, S. A.; Dakoulas, P. (2012)

The paper examines the behaviour of buried steel pipelines crossing active strike-slip faults. The vertical fault plane is crossed by the pipeline at an angle ranging between zero and 45 degrees, causing significant plastic ...

CFRP strengthening of steel pipe elbows subjected to cyclic loading

Skarakis I., Chatzopoulou G., Tsouvalis N.G., Karamanos S.A., Pournara A.E. (2016)

In order to ensure safe operation and structural integrity of pipeline and piping systems, it is sometimes necessary to strengthen specific sections of pipelines and piping systems. Recognizing the variety of mode failures ...

Cheminformatics-aided discovery of small-molecule Protein-Protein Interaction (PPI) dual inhibitors of Tumor Necrosis Factor (TNF) and Receptor Activator of NF-κB Ligand (RANKL)

Melagraki G., Ntougkos E., Rinotas V., Papaneophytou C., Leonis G., Mavromoustakos T., Kontopidis G., Douni E., Afantitis A., Kollias G. (2017)

We present an in silico drug discovery pipeline developed and applied for the identification and virtual screening of small-molecule Protein-Protein Interaction (PPI) compounds that act as dual inhibitors of TNF and RANKL ...

Comparative performance analysis of vulkan implementations of computational applications

Gkeka M.R., Bellas N., Antonopoulos C.D. (2019)

The recent introduction of the Vulkan API and the SPIR-V intermediate-level language by the Khronos Group provides a new GPU programming model in an effort to combine the advantages of its predecessors, OpenGL for 3D ...

Diana-map: Analyzing mirna from raw ngs data to quantification

Alexiou A., Zisis D., Kavakiotis I., Miliotis M., Koussounadis A., Karagkouni D., Hatzigeorgiou A.G. (2021)

microRNAs (miRNAs) are small non-coding RNAs (~22 nts) that are considered central post-transcriptional regulators of gene expression and key components in many pathological conditions. Next-Generation Sequencing (NGS) ...

The effect of spiral cold-bending manufacturing process on pipeline mechanical behavior

Chatzopoulou G., Sarvanis G.C., Papadaki C.I., Karamanos S.A. (2016)

Large-diameter spiral-welded pipes are employed in demanding hydrocarbon pipeline applications, which require an efficient strain-based design framework. In the course of a large European project, numerical simulations on ...

Experimental Investigation of Steel Lap Welded Pipe Joint Performance under Severe Axial Loading Conditions in Seismic or Geohazard Areas

Keil B.D., Lucier G., Karamanos S.A., Mielke R.D., Gobler F., Fappas D., Sarvanis G.C., Chatzopoulou G., Card R.J. (2020)

Welded lap joints are commonly used in large-diameter steel pipelines for water transmission. Their structural performance constitutes a key consideration for safeguarding pipeline integrity with no loss of pressure ...