Search Results - "Prager, Jens"

Localization of Transient Events Threatening Pipeline Integrity by Fiber-Optic Distributed Acoustic Sensing by Hussels, Maria-Teresa, Chruscicki, Sebastian, Arndt, Detlef, Scheider, Swen, Prager, Jens, Homann, Tobias, Habib, Abdel Karim

“…Pipe integrity is a central concern regarding technical safety, availability, and environmental compliance of industrial plants and pipelines. A condition…”
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Towards Interpretable Machine Learning for Automated Damage Detection Based on Ultrasonic Guided Waves by Schnur, Christopher, Goodarzi, Payman, Lugovtsova, Yevgeniya, Bulling, Jannis, Prager, Jens, Tschöke, Kilian, Moll, Jochen, Schütze, Andreas, Schneider, Tizian

“…Data-driven analysis for damage assessment has a large potential in structural health monitoring (SHM) systems, where sensors are permanently attached to the…”
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Analysis of Guided Wave Propagation in a Multi-Layered Structure in View of Structural Health Monitoring by Lugovtsova, Yevgeniya, Bulling, Jannis, Boller, Christian, Prager, Jens

“…Guided waves (GW) are of great interest for non-destructive testing (NDT) and structural health monitoring (SHM) of engineering structures such as for oil and…”
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A Machine Learning Based-Guided Wave Approach for Damage Detection and Assessment in Composite Overwrapped Pressure Vessels by Charmi, Amir, Mustapha, Samir, Yilmaz, Bengisu, Heimann, Jan, Prager, Jens

“…The applications of composite overwrapped pressure vessels (COPVs) in extreme conditions, such as storing hydrogen gases at very high pressure, impose new…”
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Guided wave ultrasonic feature determination in Type IV composite overwrapped pressure vessels towards the digital twin by Yilmaz, Bengisu, Heimann, Jan, Mustapha, Samir, Charmi, Amir, Prager, Jens

“…The digitalization of quality control processes and the underlying data infrastructures for safety relevant components, such as hydrogen pressure vessels,…”
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Guided Waves Propagation in Composite Overwrapped Pressure Vessel by Mustapha, Samir, Yilmaz, Bengisu, Heimann, Jan, Prager, Jens, Brence, Blaz

“…The application of composite overwrapped pressure vessels (COPV) to store hydrogen and other compressed gases, especially when operating at high pressures,…”
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Determination of isotropic elastic constants from dispersion images based on ultrasonic guided waves by using neural networks by Held, Mathias, Bulling, Jannis, Lugovtsova, Yevgeniya, Prager, Jens

“…•Analyzing material properties using sound waves.•Elastic properties determined through advanced image analysis and neural networks.•Measure materials using…”
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A numerical approach for the computation of dispersion relations for plate structures using the Scaled Boundary Finite Element Method by Gravenkamp, Hauke, Song, Chongmin, Prager, Jens

“…In this paper, a method is presented for the numerical computation of dispersion properties and mode shapes of guided waves in plate structures. The…”
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Damage quantification in an aluminium-CFRP composite structure using guided wave wavenumber mapping: Comparison of instantaneous and local wavenumber analyses by Lugovtsova, Yevgeniya, Bulling, Jannis, Mesnil, Olivier, Prager, Jens, Gohlke, Dirk, Boller, Christian

“…Composite-overwrapped pressure vessels (COPV) are increasingly used in the transportation industry due to their high strength to mass ratio. Throughout the…”
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Impact of H2-enrichment on the response of a partially premixed CH4–air flame to velocity and equivalence ratio fluctuations by Garcia, Alex M., Le Bras, Sophie, Prager, Jens, Boxx, Isaac, Polifke, Wolfgang

“…The dynamics of hydrogen-enriched partially premixed methane–air flames are investigated, focusing on the frequency response to velocity and equivalence ratio…”
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Impact of H 2 -enrichment on the response of a partially premixed CH 4 –air flame to velocity and equivalence ratio fluctuations by Garcia, Alex M., Le Bras, Sophie, Prager, Jens, Boxx, Isaac, Polifke, Wolfgang

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The computation of dispersion relations for three-dimensional elastic waveguides using the Scaled Boundary Finite Element Method by Gravenkamp, Hauke, Man, Hou, Song, Chongmin, Prager, Jens

“…In this paper, a numerical approach for the computation of dispersion relations for three-dimensional waveguides with arbitrary cross-section is proposed. The…”
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A threshold soot index-based fuel surrogate formulation methodology to mimic sooting tendency of real fuels in 3D-CFD simulations by Del Pecchia, Marco, Fontanesi, Stefano, Prager, Jens, Kralj, Cedomir, Lehtiniemi, Harry

“…•A new methodology to estimate sooting tendency of real fuels is presented.•Threshold Soot Index is used as a metric to quantify sooting tendency.•Surrogates…”
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Application of deep learning for structural health monitoring of a composite overwrapped pressure vessel undergoing cyclic loading by Charmi, Amir, Heimann, Jan, Duffner, Eric, Hashemi, Seyedreza, Prager, Jens

“…Structural Health Monitoring (SHM) using ultrasonic-guided waves (UGWs) enables continuous monitoring of components with complex geometries and provides…”
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How structural health monitoring can be embedded in a digital quality infrastructure: an example by Heimann, Jan, Charmi, Amir, Karapanagiotis, Christos, Hashemi, Seyedreza, Prager, Jens

“…The digital Quality Infrastructure (QI) initiative “QI-Digital” in Germany is focusing on implementing new technologies and approaches to ensure that the task…”
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Guided Wave Behavior in Type IV Composite Overwrapped Pressure Vessels Under Fatigue Loading by Hashemi, Seyedreza, Heimann, Jan, Charmi, Amir, Prager, Jens

“…Innovative Ultrasonic Guided Wave Approach for Structural Health Monitoring of Type IV Composite Overwrapped Pressure Vessels Seyedreza Hashemi, Jan Heimann,…”
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Approximate reconstruction of sound fields close to the source surface using spherical nearfield acoustical holography by Prager, Jens

“…This paper presents an investigation of the reconstruction of sound field parameters close to the surface of arbitrarily shaped sound sources. The field is…”
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Uncertainty quantification in the ab initio rate-coefficient calculation for the CH3CH(OH)CH3+OH→CH3C(OH)CH3+H2O reaction by Prager, Jens, Najm, Habib N., Zádor, Judit

“…Theoretical methods to obtain rate coefficients are essential to fundamental combustion chemistry research, yet the associated uncertainties are largely…”
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Uncertainty quantification of reaction mechanisms accounting for correlations introduced by rate rules and fitted Arrhenius parameters by Prager, Jens, Najm, Habib N., Sargsyan, Khachik, Safta, Cosmin, Pitz, William J.

“…We study correlations among uncertain Arrhenius rate parameters in a chemical model for hydrocarbon fuel–air combustion. We consider correlations induced by…”
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Structural health monitoring of hydrogen pressure vessels using distributed fiber optic sensing by Karapanagiotis, Christos, Schukar, Marcus, Breithaupt, Mathias, Duffner, Eric, Ulbricht, Alexander, Prager, Jens, Krebber, Katerina

“…We report on distributed fiber optic sensing-based monitoring of hydrogen composite overwrapped pressure vessels (COPV) to simultaneously increase the…”
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