TY - CONF A1 - Becker, Ben T1 - Influence of sample size and distribution function N2 - Influence of sample size and statistical distribution function on the safety evaluation of composite pressure cylinder. T2 - Follow-up Workshop on Statistical Safety Assessment of Composite Cylinders CY - Berlin, Germany DA - 05.10.2016 KW - Statistic KW - Composite KW - Pressure KW - Cylinder PY - 2016 AN - OPUS4-37976 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Ben T1 - Determination of consequences and accepted failure rates N2 - Evaluation of probability and consequence of critical failures of composite cylinders. T2 - Follow-up Workshop on Statistical Safety Assessment of Composite Cylinders CY - Berlin, Germany DA - 05.10.2016 KW - Failure KW - Composite KW - Pressure KW - Cylinder KW - Consequence KW - Rate PY - 2016 AN - OPUS4-37977 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Ben T1 - General aspects of risk based safety evaluation N2 - Comparison of methods for safety assessment of composite cylinders by statistical simulations. T2 - Follow-up Workshop on Statistical Safety Assessment of Composite Cylinders CY - Berlin, Germany DA - 05.10.2016 KW - Monte-carlo simulation KW - Composite KW - Pressure KW - Cylinder PY - 2016 AN - OPUS4-37978 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grunwald, Daniel A1 - Beck, Uwe A1 - Hielscher, Stefan A1 - Rietz, U. T1 - Determining the influence of preparation and measurement conditions on bonding strength using CAT-Technology N2 - The paper addresses the ‘Determining the influence of preparation and measurement conditions on bonding strength using CAT-Technology’ and the follow points are discussed in more detail: Motivation, CAT – Technology, Influence of bonding area on bonding strength, Influence of storing & measurement temperatures and Influence of substrate thickness and coating support. T2 - LUM, International Workshop Dispersion Analysis & Materials Testing 2016 CY - Berlin, Germany DA - 26.10.2016 KW - Tensile strength KW - Centrifuge technology KW - Bonding KW - Composite KW - Substrate PY - 2016 AN - OPUS4-37856 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Cabeza, Sandra A1 - Bruno, Giovanni A1 - Mishurova, Tatiana T1 - Characterization of multiphase metal matrix composites by means of CT and neutron diffraction N2 - The present study examines the relationship between the microstructure of multiphase MMC and their damage mechanisms. The matrix AlSi12CuMgNi was combined with 15% vol. Al2O3 (short fibres) and with 7% vol. Al2O3 + 15% vol. SiC (short fibres and whiskers, respectively). The experimental approach encompasses 3D microstructure characterization by means of computed tomography of samples (a) as-received, (b) after heat treatment, and (c) after compression tests at room temperature. The volume fraction of different phases, their distribution, their orientation and the presence of defects and damage are studied. Influence of addition of SiC whiskers on mechanical properties of composite was investigated. Phase-specific load partition analysis for samples with fibre plane parallel to load was perform by using neutron diffraction measurements during in-situ compression. It shows damage in the Si phase, while Al2O3 short fibres carry load without damage until failure. The computed tomography observations confirm the load partition analysis. T2 - World Non Destructive Testing CY - München, Germany DA - 11.06.2016 KW - CT KW - Neutron diffraction KW - Aluminium KW - Composite PY - 2016 AN - OPUS4-38395 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Elabshihy, Karim T1 - Nano-mechanical characterization of epoxy/Cu interphase N2 - Characterization of the mechanical properties of interphases is essential when designing multicomponent materials such as fiber-reinforced matrices, protective coatings or multi-layered structures for integrated circuits. It can provide vital information about the durability of the finished product as a composite because failure is often initiated in the interfacial region induced by internal or external stress during fabrication or service. Nanoindentation is a powerful tool for investigating mechanical properties on the micro/nano scale. However, there are some challenges associated with conducting nanoindentation near interface regions. One main challenge is that the small thickness of the interphase region (typically 1-2µm) makes it difficult to apply several adjacent indents without overlap. Another issue is that the indentations are usually restricted by local reinforcement, and it becomes difficult to isolate the change in mechanical properties due solely to interphase formation. In this study we try to gauge the feasibility of nanoindentation for characterizing epoxy/Cu interphases. We develop a sample preparation method and optimize nanoindentation parameters in an attempt to avoid the restrictions mentioned above. Atomic force microscopy (AFM) and finite element analysis are employed as reference techniques to evaluate the effectiveness of our technique. We show the influence of preparation method and nanoindentaion parameters on measurements of interphase properties and how they relate the mentioned challenges. T2 - Nanobrücken 2016 CY - Saarbrücken, Germany DA - 02.03.2016 KW - Composite KW - Epoxy KW - Interphase KW - Nanoindentation PY - 2016 AN - OPUS4-35496 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schoppa, André T1 - BAM-P200 Prüfverfahren für statistische Auswertungen N2 - Der Vortrag beschreibt die Besonderheiten bei der Durchführung von hydraulischen Prüfverfahren im Hinblick auf die Prüffristenfestlegung von Composite-Druckbehältern. Es werden die langsame hydraulische Berstprüfung und die hydraulische Lastwechselprüfung bei Umgebungstemperatur näher erläutert. T2 - Informationsveranstaltung P200 zur wiederkehrenden Prüfung von Druckgefaeßen,Prueffristenfestlegung und Lebensdauerbetrachtung von Composite-Druckgefaeßen CY - Berlin, Germany DA - 08.04.2016 KW - Statistik KW - Composite KW - Lastwechselprüfung KW - Berstprüfung KW - Druckbehälter KW - Prüffristenfestlegung PY - 2016 AN - OPUS4-35828 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -