TY - GEN A1 - Brekow, Gerhard A1 - Barbian, O. A. A1 - Bilgram, R. A1 - Deutsch, W. A. K. A1 - Eggers, H. A1 - Kappers, W. A1 - Kreier, P. A1 - Larsen, B. A1 - Reimann, R. A1 - Schlengermann, U. A1 - Staudt, J. A1 - Willems, H. T1 - Handbuch - Automatische Ultraschall-Prüfsysteme KW - ortsbezogener Messdateneinzug KW - Kenngrößen automatischer Prüfsysteme KW - Beispiele industriell angew. automat KW - Ultraschall-Prüfsysteme PY - 2003 SN - 3-931381-54-4 SP - 1 EP - 121 PB - Verlag für Schweißen und Verwandte Verfahren, DVS-Verlag CY - Berlin AN - OPUS4-3127 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Barbian, O. A. A1 - Bilgram, R. A1 - Brekow, Gerhard A1 - Deutsch, W. A. K. A1 - Eggers, H. A1 - Eser, B. A1 - Kappes, W. A1 - Kreier, P. A1 - Larsen, B. A1 - Reimann, R. A1 - Schlengermann, U. A1 - Staudt, J. A1 - Willems, H. T1 - Handbook automated ultrasonic testing systems - IIW handbook KW - Test-Related Technical Objectives and Conditons KW - Components and Performance of a Test Equipment KW - Performance of Tests KW - Examples PY - 2004 SN - 3-87155-953-9 SP - 1 EP - 119 PB - Verlag für Schweißen und Verwandte Verfahren, DVS-Verlag CY - Düsseldorf AN - OPUS4-4987 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Schumacher, Gerhard A1 - Chen, Weiye A1 - Frohberg, G. A1 - Wahi, R. P. ED - Chandra, T. T1 - Evolution of microstructure and its effect on creep behavior of single crystal superalloy SC16 under creep fatigue loading T2 - International Conference on Processing & Manufacturing of Advanced Materials T2 - International Conference on Processing & Manufacturing of Advanced Materials - Processing, Fabrication, Properties, Applications ; THERMEC 2000 CY - Las Vegas, NV, USA DA - 2000-12-04 KW - Superalloy KW - Single crystal KW - SC16 KW - Creep fatigue KW - Rafting KW - Creep behavior PY - 2000 SN - 0-08-044026-6 PB - Elsevier Science AN - OPUS4-949 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Schumacher, Gerhard A1 - Chen, S. H. A1 - Wahi, R. P. A1 - Mukherji, D. A1 - Frohberg, G. T1 - Deformation Substructures in a Near Gamma-TiAl Alloy With Duplex Microstructure JF - Journal of materials processing technology KW - Titanium Aluminides KW - Stacking faults KW - Faulted dipoles KW - Lattice parameters PY - 2000 SN - 0924-0136 SN - 1873-4774 SP - 1(?) EP - 6(?) PB - Elsevier CY - Amsterdam AN - OPUS4-950 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Frübing, P. A1 - Krüger, H. A1 - Goering, Harald A1 - Gerhard-Multhaupt, R. T1 - Relaxation behaviour of thermoplastic polyurethanes with covalently attached nitroaniline dipoles JF - Polymer N2 - Thermoplastic polyurethanes with covalently attached nitroaniline chromophores exhibit a strong high-temperature relaxation associated with a glass transition rather than the typical frequency-independent loss due to the aggregation of polymer chains via hydrogen bonds. This relaxation behaviour suggests the formation of an amorphous structure without separation into soft-segment and hard-segment phases. In such a structure, a field-induced orientation of molecular dipoles is stabilised by the high viscosity of the material below its glass transition. The dipole orientation yields a pyroelectric effect caused by dipole-density changes upon thermal expansion and contraction. The changes in phase separation are investigated by varying the chain length of the soft-phase component and studying its influence on the calorimetric, dynamic-mechanical, and dielectrical properties. Good correlation was found between differential scanning calorimetry, dynamic-mechanical analysis and dielectric spectroscopy as well as measured and calculated pyroelectric coefficients. This leads to a uniform picture of the structural changes caused by the incorporation of nitroaniline chromophores into the polyurethane structure. KW - Thermoplastic polyurethane KW - Nitroaniline chromophore KW - Dielectric relaxation PY - 2002 DO - https://doi.org/10.1016/S0032-3861(02)00075-7 SN - 0032-3861 SN - 1873-2291 VL - 43 IS - 9 SP - 2787 EP - 2794 PB - Springer CY - Berlin AN - OPUS4-2062 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Becker, Gerhard Wilhelm A1 - Menger, R. T1 - Technik im Dienste des Menschen JF - VDI-Nachrichten PY - 1980 SN - 0042-1758 VL - 34 IS - 52 SP - 1 PB - VDI-Verl. CY - Düsseldorf AN - OPUS4-9240 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kreutzbruck, Marc A1 - Brekow, Gerhard A1 - Böhm, R. A1 - Montag, Hans-Joachim A1 - Allweins, K. A1 - Strackbein, C. A1 - Bernau, H. T1 - Visualization of material defects - modern approaches in acoustical and electrical NDE-methods T2 - ICAMT 2008 - International Conference on Advances in Manufacturing Technology for Young Engineers N2 - Increasing demands in materials quality and cost effectiveness have led to advanced standards in manufacturing technology. Especially when dealing with high quality standards in conjunction with high throughput quantitative NDE techniques are vital to provide reliable and fast quality control systems. Fast NDE-systems using a high degree of automatisation can be used for both determining the degree of integrity of the components under test and indicating a change of production parameters as well. However, independently of the applied NDE method and the underlying physical principle a reliable visualisation of hidden defects within the component under test is based on a sufficient high signal to noise ratio (SNR) and a high spatial resolution. In this talk we illuminate two standard NDT methods such as Ultrasonic Testing and Eddy Current Testing and show their physical principles also discussing the interaction between sound waves or induced eddy currents with different kinds of material defects. This introduction substantiates the attainable SNR and spatial resolution of both methods with respect to defect sizing and defect classification. As a first future prospect we report on the SAFT-algorithm to improve SNR and spatial resolution paving the way for a flaw sizing approach in ultrasonic inspection. As a second modern NDE approach we represent the use of small magnetoresistance sensor arrays for EC testing of Al-laser welds or for testing superconducting wires. The high sensitivity and small extent of GMR sensors results in a remarkably SNR and spatial resolution offering new visualisation techniques for defect localisation, defect characterization and tomography-like mapping techniques. T2 - ICAMT 2008 - International Conference on Advances in Manufacturing Technology for Young Engineers CY - Madras, Chennai, India DA - 2008-02-06 PY - 2008 IS - CD-ROM (A.4 / I-1) SP - 1 PB - Indian National Academy of Engineering (INAE) CY - Madras, Chennai, India AN - OPUS4-17622 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Pastuska, Gerhard A1 - Krüger, Renate A1 - Höhn, R. T1 - Analytische Untersuchungen zum Nachweis einer Grubengerbung nach altem Verfahren JF - Das Leder PY - 1966 SN - 0024-0176 VL - 17 IS - 8 SP - 207 EP - 213 PB - Roether CY - Darmstadt AN - OPUS4-10514 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Müller, Christina A1 - Pavlovic, Mato A1 - Takahashi, Kazunori A1 - Ewert, Uwe A1 - Rosenthal, Martina A1 - Brekow, Gerhard A1 - Böhm, R. A1 - Ronneteg, U. A1 - Pitkänen, J. T1 - POD Evaluation of NDE Techniques for Canister-Components for Risk Assessment of Nuclear Waste Encapsulation T2 - 6th International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurised Components, October 8-10, 2007, Budapest, Hungary (Proceedings) - JRC Scientific and Technical Reports T2 - 6th International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurised Components CY - Budapest, Hungary DA - 2007-10-08 KW - Zerstörungsfreie Prüfung KW - Zuverlässigkeit KW - POD PY - 2008 SN - 978-92-79-08897-1 DO - https://doi.org/10.2790/1274 SN - 1018-5593 SP - 168 EP - 179 AN - OPUS4-18589 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Pastuska, Gerhard A1 - Lützow, Wolfgang A1 - Wissmann, R. T1 - Konstitution und Eigenschaften von Erzeugnissen aus Recyclingmaterial JF - FH-Texte T2 - Recycling von Kunststoffabfällen : 10. Kolloquium CY - Aachen, Germany DA - 03.12.1982 PY - 1982 SN - 0172-7818 VL - 34 SP - 59 EP - 80 CY - Aachen AN - OPUS4-36190 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -