Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
20193D Reconstruction of Handheld Data by SAFT and the Influence of Measurement Inaccuracies
Krieg, Fabian; Kodera, Sayako; Kirchhof, Jan; Römer, Florian; Ihlow, Alexander; Lugin, Sergey; Osman, Ahmad; Del Galdo, Giovanni
Conference Paper
2019Digitalisation and Fingerprint Identification of Roman Terra Sigillata Pottery
Albert-Weiss, Dominique; Osman, Ahmad; Valeske, Bernd
Book Article
2019DRAU: Dual Recurrent Attention Units for Visual Question Answering
Osman, A.; Samek, W.
Journal Article
2019Evaluating Thermal Properties of Sugarcane Bagasse-Based Composites by Using Active Infrared Thermography and Terahertz Imaging
Chulkov, Arseny Olegovich; Sfarra, Stefano; Zhang, Hai; Osman, Ahmad; Szielasko, Klaus; Stumm, Christopher; Sarasini, Fabrizio; Fiorelli, Juliano; Maldague, Xavier P.V.; Vavilov, Vladimir Platonovich
Journal Article
2019Hören, was nicht stimmt - Akustisches Sensorsystem mit kognitiver Signalanalyse
Groß, Daniel; Heinrich, Matthias; Osman, Ahmad; Waschkies, Thomas; Wei, Ziang
Journal Article
2019Nondestructive Evaluation and Monitoring Technologies, Documentation, Diagnosis and Preservation of Cultural Heritage
: Osman, Ahmad (Ed.); Moropoulou, Antonia (Ed.)
Book
2019Ein portabler, vielfältig einsetzbarer 3D-Positionierer für Synthetik-Apertur-Ultraschallmessungen in der ZfP
Groß, Philipp; Ihlow, Alexander; Böttcher, René; Bessert, Steffen; Pandey, Rick; Kirchhof, Jan; Krieg, Fabian; Römer, Florian; Osman, Ahmad; Galdo, Giovanni del
Conference Paper
2019Robotized Line-Scan Thermographic Mid-Wave Infrared Vision for Artwork Inspection: A Study on Famous Mock-Ups
Zhang, Hai; Sfarra, Stefano; Osman, Ahmad; Ibarra-Castanedo, Clemente; Maldague, Xavier P.V.
Book Article
2019SAFT Processing for Manually Acquired Ultrasonic Measurement Data with 3D SmartInspect
Krieg, Fabian; Kirchhof, Jan; Kodera, Sayako; Lugin, Sergey; Ihlow, Alexander; Schwender, Thomas; Galdo, Giovanni del; Römer, Florian; Osman, Ahmad
Journal Article
2018Defect Detection from 3D Ultrasonic Measurements Using Matrix-free Sparse Recovery Algorithms
Semper, Sebastian; Kirchhof, Jan; Wagner, Christoph; Krieg, Fabian; Römer, Florian; Osman, Ahmad; Galdo, Giovanni del
Conference Paper
2018Design and prototyping of a 3-D positioner for ultrasound quality control measurements
Groß, Philipp; Ihlow, Alexander; Böttcher, René; Bessert, Steffen; Krieg, Fabian; Kirchhof, Jan; Römer, Florian; Osman, Ahmad; Galdo, Giovanni del
Conference Paper
2018Eddy current pulsed thermography for ballistic impact evaluation in basalt-carbon hybrid composite panels
Zhang, Hai; Sfarra, Stefano; Osman, Ahmad; Sarasini, Fabrizio; Netzelmann, Udo; Perilli, Stefano; Ibarra-Castanedo, Clemente; Maldague, Xavier P.V.
Journal Article
2018Enhanced Infrared Image Processing for Impacted Carbon/Glass Fiber-Reinforced Composite Evaluation
Zhang, Hai; Avdelidis, Nicolas P.; Osman, Ahmad; Ibarra-Castanedo, Clemente; Sfarra, Stefano; Fernandes, Henrique; Matikas, Theodore E.; Maldague, Xavier P.V.
Journal Article
2018Infrared and Terahertz time-domain imaging for evaluation of impacted thick homogeneous particleboards of sugarcane bagasse
Zhang, Hai; Sfarra, Stefano; Osman, Ahmad; Szielasko, Klaus; Stumm, Christopher; Sarasini, Fabrizio; Maldague, Xavier P.V.
Conference Paper
2018An infrared-induced terahertz imaging modality for foreign object detection in lightweight honeycomb structure
Zhang, Hai; Sfarra, Stefano; Osman, Ahmad; Szielasko, Klaus; Stumm, Christopher; Genest, Marc; Maldague, Xavier P.V.
Journal Article
2018Nondestructive evaluation of low-velocity impact-induced damage in basalt-carbon hybrid composite laminates using eddy current-pulsed thermography
Zhang, Hai; Sfarra, Stefano; Osman, Ahmad; Sarasini, Fabrizio; Netzelmann, Udo; Valeske, Bernd; Avdelidis, Nicolas P.; Ibarra-Castanedo, Clemente; Maldague, Xavier P.V.
Journal Article
2018Nondestructive evaluation using eddy current pulsed thermographic imaging of basalt-carbon hybrid fiber-reinforced composite laminates subjected to low-velocity impact loadings
Zhang, Hai; Sfarra, Stefano; Osman, Ahmad; Sarasini, Fabrizio; Valeske, Bernd; Netzelmann, Udo; Avdelidis, Nicolas P.; Ibarra-Castanedo, Clemente; Maldague, Xavier
Conference Paper
2018Progressive online 3-D SAFT processing by matrix structure exploitation
Krieg, Fabian; Pandey, Rick; Kirchhof, Jan; Ihlow, Alexander; Römer, Florian; Del Galdo, Giovanni; Osman, Ahmad
Conference Paper
2018SAFT Processing for Manually Acquired Ultrasonic Measurement Data with 3D Smartinspect
Krieg, Fabian; Lugin, Sergey; Kirchhof, Jan; Ihlow, Alexander; Schwender, Thomas; Galdo, Giovanni del; Römer, Florian; Osman, Ahmad
Conference Paper
2018Terahertz Amplitude Polynomial Principle Component Regression for Aramid-Basalt Hybrid Composite Laminate Inspection
Zhang, Hai; Sfarra, Stefano; Osman, Ahmad; Szielasko, Klaus; Stumm, Christopher; Sarasini, Fabrizio; Santulli, Carlo; Maldague, Xavier P.V.
Journal Article
2018Terahertz Image Improvement for an Environmentally Friendly Sandwich Structure
Zhang, Hai; Sfarra, Stefano; Maldague, Xavier; Osman, Ahmad; Szielasko, Klaus; Stumm, Christopher; Sarasini, Fabrizio; Tirillò, Jacopo
Conference Paper
2018An ultrasonic non-destructive testing method for evaluating resistance spot welding quality
Wu, Yupeng; Wei, Ziang; Osman, Ahmad; Zhang, Xiaodan; Zhang, Baojun; Cai, Guixi; Han, Xiaohui; Zhou, Qingxiang; Zhao, Yang
Conference Paper
2018Vergleich und Anpassung von 3D-SAFT-Implementierungen im Zeit- und Frequenzbereich für die schnelle Grobblechprüfung
Krieg, Fabian; Kirchhof, Jan; Römer, Florian; Ihlow, Alexander; Del Galdo, Giovanni; Osman, Ahmad
Conference Paper
20173D-SAFT auf vorverarbeiteten Ultraschallsignalen - schneller messen bei verbesserter Auflösung
Kirchhof, Jan; Krieg, Fabian; Römer, Florian; Ihlow, Alexander; Osman, Ahmad; Galdo, Giovanni del
Abstract, Poster
2017Automated detection of geometric defects on connecting rod via acoustic resonance testing
Zheng, Y.; Heinrich, M.; Osman, A.; Valeske, B.
Conference Paper
2017Characterization of speckle noise in three dimensional ultrasound data of material components
Osman, Ahmad; Kaftandjian, Valérie
Journal Article
2017Implementation issues of 3D SAFT in time and frequency domain for the fast inspection of heavy plates
Krieg, Fabian; Kirchhof, Jan; Römer, Florian; Ihlow, Alexander; Galdo, Giovanni del; Osman, Ahmad
Conference Paper
2017Implementation of sparse signal recovery on FPGA for ultrasonic NDT
Grandinetti, C.; Kirchhof, J.; Krieg, F.; Roemer, F.; Ihlow, A.; Delgaldo, G.; Theado, H.; Osman, A.
Conference Paper
2017Quantitative Einordnung von Gas-Leckagen durch Mustererkennung mittels Neuronaler Netze in Aufnahmen der Gasfahne
Schuh, Joachim
: Osman, Ahmad (Betreuer)
Master Thesis
2017Sparse signal recovery for ultrasonic detection and reconstruction of shadowed flaws
Kirchhof, Jan; Krieg, Fabian; Römer, Florian; Ihlow, Alexander; Osman, Ahmad; Galdo, Giovanni del
Conference Paper
2017Ultraschall Datenreduktion zur Integration in intelligente Sensorik/Sensor-Elektronik
Grandinetti, Christian
: Osman, Ahmad
Master Thesis
2016Speeding up 3D SAFT for ultrasonic NDT by sparse deconvolution
Kirchhof, Jan; Krieg, Fabian; Römer, Florian; Ihlow, Alexander; Osman, Ahmad; Galdo, Giovanni del
Conference Paper
2016Verfahren und Anordnung zur überwachten, räumlich-aufgelösten Prüfung eines dreidimensionalen Objektes
Lugin, Sergey; Osman, Ahmad; Valeske, Bernd
Patent
2015Automated segmentation of ultrasonic volumetric data of composite materials
Osman, Ahmad; Hassler, Ulf; Kaftandjian, Valérie; Hornegger, Joachim
Journal Article
2014Application of belief functions theory to non destructive testing of industrial pieces
Osman, A.; Kaftandjian, V.; Hassler, U.
Conference Paper
2014Improving the Reliability of NDT Inspection through Information Fusion Applications in X-Ray and Ultrasound Modalities
Osman, Ahmed; Kaftandjian, Valérie; Hassler, Ulf
Conference Paper
2014Simulation study for optimization of X-ray inspection setup applied to CFRP aerostructures
Tigkos, Konstantinos; Bliznakova, Kristina; Dermitzakis, Aris; Ducro, Nicolas; Haßler, Ulf; Kamarianakis, Zacharias; Osman, Ahmad; Rebuffel, Veronique; Tartare, Mathieu
Conference Paper
2013Quantitative evaluation of optical lock-in and pulsed thermography for aluminum foam material
Duan, Yuxia; Huebner, Stefanie; Hassler, Ulf; Osman, Ahmad; Ibarra-Castanedo, Clemente; Maldague, Xavier P.V.
Journal Article
2012An automated data processing method dedicated to 3D ultrasonic non destructive testing of composite pieces
Osman, A.; Hassler, U.; Kaftandjian, V.; Hornegger, J.
Journal Article, Conference Paper
2012Automatic classification of three-dimensional segmented computed tomography data using data fusion and support vector machine
Osman, A.; Kaftandjian, V.; Hassler, U.
Journal Article
2011Automatic classification of 3D segmented CT data using data fusion and support vector machine
Osman, A.; Kaftandjian, V.; Hassler, U.
Conference Paper
2011Improvement of X-ray castings inspection reliability by using Dempster-Shafer data fusion theory
Osman, A.; Kaftandjian, V.; Haßler, U.
Journal Article
2011Interest of data fusion for improvement of classification in X-ray inspection
Osman, A.; Haßler, U.; Kaftandjian, V.
Conference Paper
2010Application of data fusion theory and support vector machine to x-ray castings inspection
Haßler, U.; Kaftandjian, V.; Osman, A.
Conference Paper
2010Steps toward automated 3D evaluation of ultrasound data
Osman, A.; Hassler, U.; Rehak, M.; Hanke, R.; Kaftandjian, V.
Conference Paper