TY - JOUR A1 - Eberle, Arno A1 - Sievert, Rainer A1 - Schiller, Wolfgang Arno T1 - Flip-Chip-Lotbumps thermisch-zyklisch belastet - Einfluß des Substratmaterials auf das viskoplastische Verhalten von Flip-Chip-Lotbumps PY - 1998 SN - 0025-5300 VL - 40 IS - 9 SP - 350 EP - 352 PB - Carl Hanser Verlag CY - München AN - OPUS4-33715 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eberle, Arno A1 - Sievert, Rainer A1 - Schiller, Wolfgang Arno T1 - Numerical investigation on the influence of different substrate materials on the viscoplastic behaviour of flip chip solder bumps N2 - The finite element method was used to simulate the thermo-mechanical behaviour of a flip chip under thermocyclic loading between -55°C (-67°F) and 125°C (257°F). In order to simulate realistically the inelastic material response of the solder bump, Chaboche's viscoplastic material model instead of a classical ORNL-theory was implemented into the finite element code ABAQUS and applied to a flip chip configuration. This so-called unified constitutive model is able to describe the Bauschinger effect as well as the creep/plasticity interaction. Herewith the influence of the substrate material on the inelastic deformation behaviour of a tin-lead solder bump was analysed. A comparison is given with respect to the influence of the two substrate materials namely Al2O3 and our self-developed Low Temperature Co-fired Ceramics (LTCC) on the inelastic response of the Sn60Pb40 eutectic solder material. It may be shown that the thermoelastic behaviour of the LTCC substrate significantly reduces the cyclic stresses in the bump compared to Al2O3 as well as the cumulative inelastic strain which is responsible for the development of damage and hence flip chip failure T2 - International symposium on advanced packaging materials 2000 CY - Braselton, Georgia, USA DA - 06.03.2000 PY - 2000 SN - 0-930815-59-9 U6 - https://doi.org/10.1109/ISAPM.2000.869253 SP - 112 EP - 117 AN - OPUS4-33716 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eberle, Arno A1 - Sievert, Rainer T1 - Verifizierung von Flip-Chip-Demonstratoren unter Verwendung belastbarer Materialkennwerte T2 - Öffentliches Status-Seminar "Projekt SIMIKO" CY - München, Deutschland DA - 2000-09-29 PY - 2000 AN - OPUS4-976 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Eberle, Arno A1 - Klingbeil, Dietmar A1 - Schicker, Johannes T1 - The calculation of dynamic JR-curves from the finite element analysis of a Charpy test using a rate-dependent damage model N2 - A two-dimensional analysis of the Charpy V-notch specimen subjected to impact loading, according to the standard DIN EN 10045-1, is carried out, using a transient explicit dynamic finite element program. An elastic-viscoplastic, temperature dependent, constitutive relation for a porous plastic solid based on the Gurson damage model is developed. Ductile fracture of the matrix material will be described by the nucleation and subsequent growth of voids to coalescence. An updated Lagrange–Jaumann formulation is employed accounting for large strain and rotation. The discretization is based on four-node plane strain solid elements with one Gauss point. The equations of motion are integrated numerically by an explicit integration algorithm utilising a lumped mass matrix. The predictions of the numerical analysis in terms of force deflection response, crack resistance behaviour and deformation energy absorbtion are compared with results from Charpy tests which were carried out according to the low-blow technique. PY - 2000 SN - 0029-5493 SN - 1872-759X VL - 198 IS - 1-2 SP - 75 EP - 87 PB - North-Holland Publ. Co. CY - Amsterdam AN - OPUS4-995 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Klingbeil, Dietmar A1 - Eberle, Arno A1 - Baer, Wolfram A1 - Wossidlo, Peter A1 - Häcker, Ralf ED - François, D. ED - Pineau, A. T1 - The calculation of dynamic JR-curves from 2D and 3D finite element analyses of a charpy test using a rate-dependent damage model T2 - Charpy Centenary Conference CY - Poitiers, France DA - 2001-01-02 PY - 2001 SN - 0-08-043970-5 SN - 1566-1369 N1 - Serientitel: ESIS publication – Series title: ESIS publication IS - 30 SP - 403 EP - 410 PB - Elsevier CY - Amsterdam AN - OPUS4-1928 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bösel, Dieter A1 - Baer, Wolfram A1 - Eberle, Arno A1 - Klingbeil, Dietmar T1 - Stand der Entwicklung von Key Curve Einprobenverfahren zur Ermittlung dynamischer Risswiderstandskurven an duktilen Gusseisenwerkstoffen KW - Dynamische Bruchmechanik KW - Risswiderstandskurve KW - Einprobentechnik KW - Gusseisen mit Kugelgraphit KW - Dynamic fracture mechanics KW - Crack resistance curve KW - Single specimen method KW - Ductile cast iron PY - 2008 SN - 1616-4687 SP - 73 EP - 81 AN - OPUS4-16709 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Baer, Wolfram A1 - Bösel, Dieter A1 - Eberle, Arno A1 - Klingbeil, Dietmar ED - Jaroslav Pokluda, ED - Petr Lukás, ED - Pavel Sandera, ED - Ivo Dlouhý, T1 - On the development of key curve methods for the determination of dynamic crack resistance curves of ductile cast iron (DCI) T2 - 17th European Conference on Fracture (ECF17) - Multilevel Approach to Fracture of Materials, Components and Structures CY - Brno, Czech Republic DA - 2008-09-02 KW - Dynamic crack resistance curve KW - Key curve method KW - Ductile cast iron PY - 2008 SN - 978-80-214-3692-3 SP - 492 EP - 498 PB - VUTIUM Brno AN - OPUS4-17909 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bettge, Dirk A1 - Klinger, Christian A1 - Ell, Matthias A1 - Klingbeil, Dietmar A1 - von Oppel, Kay A1 - Singh, Kai A1 - Eberle, Arno A1 - Engelhardt, Monika A1 - Bogel, Bärbel A1 - Saliwan Neumann, Romeo T1 - Schadensanalyse an Rohrbögen von Dampferzeugeranlagen T2 - VGB-Fachtagung "Dampferzeuger, Industrie und Heizkraftwerke 2006" CY - Würzburg, Deutschland DA - 2006-09-04 KW - Schadensanalyse KW - Brüche KW - Dampferzeuger KW - Transportschaden PY - 2006 PB - VGB PowerTech e.V. CY - Essen AN - OPUS4-12817 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Baer, Wolfram A1 - Bösel, Dieter A1 - Eberle, Arno A1 - Klingbeil, Dietmar T1 - Determination of dynamic crack resistance of ductile cast iron using the compliance ratio key curve method KW - Dynamic crack resistance curve KW - Ductile cast iron KW - Single-specimen method KW - Key curve KW - Compliance ratio method PY - 2010 U6 - https://doi.org/10.1016/j.engfracmech.2009.06.015 SN - 0013-7944 SN - 1873-7315 VL - 77 SP - 374 EP - 384 PB - Elsevier Science CY - Kidlington AN - OPUS4-20822 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Baer, Wolfram A1 - Eberle, Arno A1 - Klingbeil, Dietmar ED - Klingbeil, D. ED - Vormwald, M. ED - Eulitz, K.-G. T1 - The impact of ductile cast iron fracture behaviour on dynamic fracture mechanics R-curve testing using key curve methods N2 - Dynamic fracture mechanics characteristics are required for design and safety proof of advanced ductile cast iron (DCI) components. In this paper, the analytical compliance ratio (CR) and numerical finite element (FE) key curve methods were investigated for dynamic Rcurve testing. Two DCI materials, a purely ferritic and a ferritic one with 18 % of pearlite, were tested at room temperature (RT) and -40 °C. The special focus is on the impact of the materials damage and fracture behaviour on performance and limitations of the investigated methods. Systematic metallographic and fractographic microstructural analyses were performed accompanying the test program. Summarizing systematics of the specific damage behaviour and fracture mechanisms were developed taking microstructure, loading rate, specimen geometry and test temperature into account. There has been a change from ductile to brittle fracture mechanism observed at -40 °C with ferritic DCI and even at RT with ferritic-pearlitic DCI. The ferritic-pearlitic DCI did not show Rcurve behaviour at -40 °C and only single Juc values could be determined. Furthermore, with ferritic-pearlitic DCI, random pearlite shares in the ligament caused the relation between loading rate, force-deflection record and crack extension not to remain uniquely defined. Therefore, the FE key curve method proofed not to be applicable since the FE model was based on homogeneous isotropic material and ductile failure mode only. The analytical CR key curve method worked well only with selected combinations of microstructure, specimen geometry and temperature. In summary it has to be concluded that a robust, accurate and sufficiently simple dynamic key curve method that was suited for application in quality control of industrial relevant DCI qualities cannot be provided currently. T2 - 18th European conference on fracture (ECF 18) - Fracture of materials and structures from micro to macro scale CY - Dresden, Germany DA - 2010-08-30 KW - Damage and fracture behaviour KW - Ductile cast iron KW - Dynamic crack resistance curve KW - Key curve PY - 2010 SN - 978-3-00-031802-3 IS - Paper 160 SP - 1 EP - 8 AN - OPUS4-22273 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -