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| 2011 | Multitechnology tool for metal loss inspection of gas pipelines providing quantitative wall thickness measurement capabilities
Willems, H.; Niese, Frank; Jaskolla, B.; Sickinger, T.; Rieth-Hoerst, S.; Barbian, O.A. | Presentation |
| 2010 | Advanced possibilities for corrosion inspection of gas pipelines using EMAT-technology
Willems, H.; Jaskolla, B.; Sickinger, T.; Barbian, O.A.; Niese, F. | Conference Paper |
| 2010 | Ein neues Prüfsystem für die Korrosionsprüfung von Gaspipelines mit kombinierter Ultraschall-, Wirbelstrom- und Streuflussmessung
Willems, H.; Niese, F.; Jaskolla, B.; Sickinger, T.; Barbian, O.A. | Conference Paper |
| 2010 | A new ILI tool for metal loss inspection of gas pipelines using a combination of ultrasound, eddy current and MFL
Willems, H.; Jaskolla, B.; Sickinger, T.; Barbian, O.-A.; Niese, F. | Conference Paper |
| 2009 | New possibilities for non-destructive testing of pipelines with intelligent pigs
Willems, H.; Niese, F.; Jaskolla, B.; Barbian, O.-A. | Conference Paper |
| 2009 | Ultraschall-Wanddickenmessung - Vergleichende Untersuchungen unter Verwendung piezoelektrischen und EMUS-Prüfköpfen
Willems, H.; Niese, F. | Conference Paper |
| 2008 | State of the art of inline non-destructive weld inspection of pipelines by ultrasonics
Dobmann, G.; Barbian, O.A.; Willems, H. | Journal Article |
| 2008 | Wall thickness measurement sensor for pipeline inspection using EMAT technology in combination with pulsed eddy current and MFL
Dobmann, G.; Niese, F.; Willems, H.; Yashan, A. | Journal Article |
| 2007 | Fortschrittliche Konzepte für die Ultraschall-Prüfung von Rohrleitungen
Willems, H.; Bähr, W.; Werle, M. | Conference Paper |
| 2007 | New approaches for the quantitative wall thickness measurement in gas pipelines
Niese, F.; Willems, H.; Barbian, O.-A. | Conference Paper |
| 2007 | State of the art of in-line nondestructive weld inspection of pipelines by ultrasonics
Dobmann, G.; Barbian, O.A.; Willems, H. | Journal Article |
| 2007 | Verfahren und System zur zerstoerungsfreien Pruefung eines metallischen Werkstuecks
Yashan, A.; Willems, H.; Niese, F. | Patent |
| 2006 | Wall-thickness measurement sensor for pipeline inspection using EMAT technology in combination with pulsed eddy current and MFL
Niese, F.; Yashan, A.; Willems, H. | Conference Paper |
| 2004 | Vorrichtung zur Pruefung von ferromagnetischen Materialien
Willems, H.; Barbian, O.A.; Huebschen, G. | Patent |
| 2003 | Moderne Konzepte der automatisierten Ultraschallprüfung am Beispiel der Inspektion von Fernrohrleitungen
Willems, H.; Barbian, O.; Bähr, W. | Conference Paper |
| 2000 | Numerical Time Domain Modeling of the Ultrasonic NDT with Electromagnetic Acoustic and Piezoelectric Transducers
Marklein, R.; Langenberg, K.J.; Hübschen, G.; Willems, H. | Conference Paper |
| 1999 | Ultraschallprüfung mit piezoelektrischen Ultraschallwandlern gegenüber elektromagnetischen Ultraschallwandlern (EMUS)
Marklein, R.; Kaczorowski, T.; Langenberg, K.J.; Hübschen, G.; Willems, H. | Conference Paper |
| 1997 | Prüfung auf Risse in Fernrohrleitungen - Aufgabe und Lösung
Barbian, O.A.; Willems, H.; Stripf, H.; Gries, H.; Neumann, R. | Conference Paper |
| 1996 | Vorrichtung zum zerstoerungsfreien Messen der Dicke einer Haerteschicht
Willems, H.; Neumann, R. | Patent |
| 1994 | Material characterization by contactless measurement of ultrasonic absorption using laser ultrasound
Haberer, B.; Paul, M.; Willems, H.; Arnold, W. | Conference Paper |
| 1994 | Measurement of internal friction in polycrystalline materials using laser-generated ultrasound
Haberer, B.; Arnold, W.; Willems, H.; Paul, M. | Conference Paper |
| 1994 | Ultrasonic backscattering as a fingerprint technique for identity and integrity verification of components
Wogatzki, E.; Willems, H. | Conference Paper |
| 1994 | Vorrichtung zur Untersuchung des Gefuegezustandes
Willems, H.; Wilbrand, A. | Patent |
| 1993 | Nondestructive characterization of materials by ultrasonic and micromagnetic techniques for strength and toughness prediction and the detection of early creep damage
Dobmann, G.; Kröning, M.; Theiner, W.; Willems, H. | Conference Paper |
| 1993 | Nondestructive evaluation of creep-induced material degradation in low alloy ferritic steels
Willems, H.; Koble, T.D.; Kröning, M. | Conference Paper |
| 1993 | Zerstörungsfreie Früherkennung von Kriechschäden
Willems, H.; Dobmann, G.; Koble, T. | Conference Paper |
| 1992 | Bestimmung des Einflusses von Kriechschädigungen auf die Rayleighwellengeschwindigkeit an der Legierung Alloy 800 H mittels Akustischer Rastermikroskopie
Wertsman, N.; Arnold, W.; Pangraz, S.; Willems, H. | Conference Paper |
| 1992 | Evaluation of creep damage by ultrasonic velocity measuremets
Willems, H. | Conference Paper |
| 1992 | Früherkennung von Kriechschäden - Zum Stand fortschrittlicher Zerstörungsfreier Prüfverfahren
Dobmann, G.; Koble, T.D.; Kröning, M.; Willems, H. | Conference Paper |
| 1992 | Mastering quality by integration of nondestructive testing tools into quality assurance
Dobmann, G.; Kröning, M.; Theiner, W.; Willems, H. | Conference Paper |
| 1992 | On-line measurement of hardening depth during induction hardening using ultrasonic backscattering
Kröning, M.; Neumann, R.; Willems, H. | Conference Paper |
| 1991 | Automatisierte Messung der Einhärtungstiefe an induktionsgehärteten Komponenten mittels Ultraschall
Neumann, R.; Willems, H. | Conference Paper |
| 1991 | Influence of microstructure on ultrasonic velocity in Nimonic alloy PE16
Jayakumar, T.; Raj, B.; Arnold, W.; Willems, H. | Conference Paper |
| 1990 | NDT assessment of a residual life of fatigued damage alloy 800H
Bressers, J.; Hessler, W.; Hildebrandt, U.W.; Willems, H. | Conference Paper |
| 1990 | Nondestructive determination of hardening depth in induction hardened components by ultrasonic backscattering
Willems, H. | Conference Paper |
| 1990 | Nondestructive evaluation of elastic parameters of sintered iron powder compacts
Panakkal, J.P.; Arnold, W.; Willems, H. | Journal Article |
| 1990 | Nondestructive stress and microstructure analysis by ultrasonic
Höller, P.; Schneider, E.; Willems, H. | Conference Paper |
| 1989 | Assessment of creep damage by NDT
Willems, H. | Conference Paper |
| 1989 | Nondestructive characterization of material properties by an automated ultrasonic technique
Panakkal, J.P.; Peukert, H.; Willems, H. | Conference Paper |
| 1989 | Nondestructive monitoring of fabrication parameters of sintered iron powder compacts using ultrasonics
Panakkal, J.P.; Willems, H. | Journal Article |
| 1989 | Ultrasonic attenuation measurement using backscattering technique
Goebbels, K.; Willems, H. | Conference Paper |
| 1988 | Characterization of creep damage by means of ultrasonic techniques
Willems, H. | Conference Paper |
| 1987 | Früherkennung von Kriechschädigung mittels Ultraschall-Verfahren
Willems, H. | Conference Paper |
| 1987 | The influence of high-temperature creep on the ultrasonic velocity in alloy 800H
Willems, H. | Conference Paper |
| 1987 | Investigation of creep damage in alloy 800H using ultrasonic velocity measurements
Willems, H. | Conference Paper |
| 1987 | Korngrößenbestimmung in polykristallinen Werkstoffen mit Ultraschallverfahren
Arnold, W.; Willems, H. | Book Article |
| 1987 | Möglichkeiten der zerstörungsfreien Charakterisierung von Zeitstandbeanspruchung mittels Ultraschall
Willems, H.; Degischer, H.P. | Conference Paper |
| 1987 | A new method for the measurement of ultrasonic absorption in polychristalline materials
Willems, H. | Conference Paper |
| 1987 | Nondestructive evaluation of creep damage in service exposed 14 MoV 6 3 steel
Bendick, W.; Weber, H.; Willems, H. | Conference Paper |
| 1987 | Photoakustische Mikroskopie als Mikro-ZfP-Verfahren
Hoffmann, B.; Arnold, W.; Willems, H. | Conference Paper |
| 1987 | Vorrichtung zur Messung der Korngroesse in polykristallinen Werkstoffen
Pongratz, H.J.; Willems, H.; Arnold, W. | Patent |
| 1986 | Crack depth estimation by photoacoustic microscopy
Hoffmann, B.; Willems, H.; Arnold, W. | Journal Article |
| 1986 | The potential of NDT-methods in predicting the residual lifetime of turbine components
Hildebrand, U.W.; Schneider, K.; Willems, H.; Persch, H. | Conference Paper |
| 1985 | Zerstoerungsfreie Gefuegeanalyse mittels Ultraschall-Rueckstreuung
Goebbels, K.; Willems, H. | Book Article |
| 1984 | Determination of microstructural parameters by magnetic and ultrasonic quantitative NDE
Theiner, W.A.; Willems, H. | Book Article |
| 1984 | Nachweis, Interpretation und Bewertung schwach wechselwirkender Risse mit Hilfe zerstoerungsfreier Pruefverfahren und bruchmechanischer Analysen unter besonderer Beruecksichtigung von unter Druck stehenden Rissflaechen
Schneider, E.; Baudendistel, E.; Mueller, W.; Walter, F.; Willems, H.; Becker, R.; Dobmann, G.; Goebbels, K.; Hollstein, T.; Huebschen, G.; Pfeiffer-Vollmar, H.W. | Book |
| 1984 | The use of ultrasound in the determination of microstructure
Goebbels, K.; Hirsekorn, S.; Willems, H. | Conference Paper |
| 1983 | Numerical filtering of ultrasonic backscattered signals
Pongratz, H.J.; Arnold, W.; Willems, H. | Book Article |
| 1983 | Numerical smoothing of ultrasonic back-scattered signals by convolution
Pongratz, H.J.; Arnold, W.; Willems, H. | Journal Article |
| 1982 | Characterisation de la structure des materiaux polycristallins par retrodiffusion ultrasonore
Goebbels, K.; Willems, H. | Journal Article |
| 1982 | Characterization of microstructure by scattered ultrasonic waves
Goebbels, K.; Willems, H. | Conference Paper |
| 1982 | Structure analysis by ultrasonic backscattering measurements
Goebbels, K.; Willems, H. | Book Article |
| 1981 | Characterization of microstructure by backscattered ultrasonic waves
Goebbels, K.; Willems, H. | Journal Article |
| 1980 | Gefuegebeurteilung durch die Ultraschallrueckstreuung von Oberflaechenwellen
Goebbels, K.; Willems, H. | Journal Article |