@article{MokhtariContiBhogarajuetal.2019, author = {Mokhtari, Omid and Conti, Fosca and Bhogaraju, Sri Krishna and Meier, Markus and Schweigart, Helmut and Tetzlaff, Ulrich and Elger, Gordon}, title = {Characterization of tin-oxides and tin-formate crystals obtained from SnAgCu solder alloy under formic acid vapor}, volume = {43}, journal = {New Journal of Chemistry}, number = {26}, publisher = {RSC}, address = {London}, issn = {1369-9261}, doi = {https://doi.org/10.1039/C9NJ02135C}, pages = {10227 -- 10231}, year = {2019}, language = {en} } @article{GottwaltKubaschinskiWaltzetal.2022, author = {Gottwalt, Albin and Kubaschinski, Paul and Waltz, Manuela and Glatzel, Uwe and Tetzlaff, Ulrich}, title = {An experimental setup for fatigue testing of thin electrical steel sheets}, volume = {2022}, pages = {106987}, journal = {International Journal of Fatigue}, number = {162}, publisher = {Elsevier}, address = {Oxford}, issn = {0142-1123}, doi = {https://doi.org/10.1016/j.ijfatigue.2022.106987}, year = {2022}, abstract = {In this study, the fatigue behavior of thin electrical steel sheets under cyclic loading is investigated. Results from strain-controlled and stress-controlled fatigue tests with different specimen geometries and different test setups are presented and compared with conventional testing methods. The results imply that conventional testing methods should be adjusted for testing thin electrical steel sheets because the fatigue life depends significantly on the test setup as well as the specimen geometry. Therefore, this study proposes an improved specimen geometry and test setup for stress- and strain-controlled fatigue tests of thin electrical steel sheets depending on the desired testing parameters.}, language = {en} } @article{ThambiSchiesslWaltzetal.2017, author = {Thambi, Joel Luther and Schiessl, Andreas and Waltz, Manuela and Lang, Klaus-Dieter and Tetzlaff, Ulrich}, title = {Modified Constitutive Creep Laws With Micromechanical Modeling of Pb-Free Solder Alloys}, volume = {139}, pages = {031002}, journal = {Journal of Electronic Packaging}, number = {3}, publisher = {The American Society of Mechanical Engineers}, address = {New York}, issn = {1528-9044}, doi = {https://doi.org/10.1115/1.4035850}, year = {2017}, language = {en} } @article{ThambiTetzlaffSchiessletal.2016, author = {Thambi, Joel Luther and Tetzlaff, Ulrich and Schiessl, Andreas and Lang, Klaus-Dieter and Waltz, Manuela}, title = {High cycle fatigue behaviour and generalized fatigue model development of lead-free solder alloy based on local stress approach}, journal = {Microelectronics Reliability}, number = {66}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0026-2714}, doi = {https://doi.org/10.1016/j.microrel.2016.10.004}, pages = {98 -- 105}, year = {2016}, language = {en} } @article{CorreadaSilvaVolpatoFredeletal.2019, author = {Corr{\^e}a da Silva, Cau{\^e} and Volpato, Guilherme and Fredel, M{\´a}rcio Celso and Tetzlaff, Ulrich}, title = {Low-pressure processing and microstructural evaluation of unidirectional carbon fiber-reinforced aluminum-nickel matrix composites}, volume = {2019}, journal = {Journal of Materials Processing Technology}, number = {269}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0924-0136}, doi = {https://doi.org/10.1016/j.jmatprotec.2019.01.032}, pages = {10 -- 15}, year = {2019}, language = {en} } @inproceedings{VolpatoFredelTetzlaff2019, author = {Volpato, Guilherme and Fredel, M{\´a}rcio Celso and Tetzlaff, Ulrich}, title = {Dry Sliding Wear and Fe Contamination of Investment-cast SiC Foam Reinforced Aluminum Matrix Composites}, booktitle = {EuroBrake 2019 Conference Proceedings}, publisher = {FISITA}, address = {Bishops Stortford}, isbn = {978-0-9572076-3-9}, year = {2019}, language = {en} } @article{LemosFredelPyczaketal.2019, author = {Lemos, Georges and Fredel, M{\´a}rcio Celso and Pyczak, Florian and Tetzlaff, Ulrich}, title = {Influence of distinct manufacturing processes on the microstructure of Ni-based metal matrix composites submitted to long thermal exposure}, volume = {2019}, journal = {Key Engineering Materials}, number = {809}, publisher = {Trans Tech Publications}, address = {Baech}, issn = {1662-9795}, doi = {https://doi.org/10.4028/www.scientific.net/KEM.809.79}, pages = {79 -- 86}, year = {2019}, language = {en} } @inproceedings{GuldenReinholdGramstatetal.2019, author = {Gulden, Florian and Reinhold, B. and Gramstat, Sebastian and Tetzlaff, Ulrich and H{\"o}ppel, Heinz Werner}, title = {Investigation of the run-in and corrosion behavior of a PEO-coated aluminum brake disc}, booktitle = {10th International Munich Chassis Symposium 2019: chassis.tech plus}, editor = {Pfeffer, Peter E.}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-26435-2}, doi = {https://doi.org/10.1007/978-3-658-26435-2_43}, pages = {611 -- 631}, year = {2019}, language = {en} } @inproceedings{GuldenStichGramstatetal.2018, author = {Gulden, Florian and Stich, Anton and Gramstat, Sebastian and H{\"o}ppel, Heinz Werner and Tetzlaff, Ulrich}, title = {Investigations of the third body using pin-on-disc and brake dynamometer on all-MMC brake rotors}, booktitle = {EuroBrake 2018 Conference Proceedings}, publisher = {FISITA}, address = {Bishops Stortford}, isbn = {978-1-5108-7963-8}, pages = {401 -- 407}, year = {2018}, language = {en} } @article{BenedetDutraTetzlaffVieiradaCunhaetal.2022, author = {Benedet Dutra, Gabriel and Tetzlaff, Ulrich and Vieira da Cunha, Tiago and dos Santos, Carlos Eduardo and Lemos, Georges}, title = {Microstructural Characterization of an ERNiCrMo-3 and Grey Cast Iron Interface Obtained via TIG Welding}, volume = {53}, journal = {Metallurgical and Materials Transactions B}, number = {4}, publisher = {Springer Nature}, address = {Cham}, issn = {1073-5615}, doi = {https://doi.org/10.1007/s11663-022-02549-8}, pages = {2534 -- 2546}, year = {2022}, language = {en} } @article{KubaschinskiGottwaltTetzlaffetal.2023, author = {Kubaschinski, Paul and Gottwalt, Albin and Tetzlaff, Ulrich and Altenbach, Holm and Waltz, Manuela}, title = {Modelling and simulation of the hardness profile and its effect on the stress-strain behaviour of punched electrical steel sheets}, volume = {54}, journal = {Materials Science \& Engineering Technology}, number = {4}, publisher = {Wiley}, address = {Weinheim}, issn = {0933-5137}, doi = {https://doi.org/10.1002/mawe.202200283}, pages = {512 -- 526}, year = {2023}, abstract = {The shear cutting of electrical steel sheets has a significant influence on the magnetic and mechanical material properties. Due to plastic deformation and strain hardening in the area of the punched edge, the electrical steel sheets exhibit a characteristic hardness profile. This study deals with the modelling of the resulting hardness profile by means of finite-element simulations. Elastic-plastic material properties are obtained from spherical nanoindentation testing as a function of the local hardness. In particular, representative stress-strain values are determined by applying Tabor's concept of indentation stress-strain curves. The choice of the appropriate stress- and strain-constraint factors is discussed with respect to the nanoindentation test setup used. Following this, the representative stress-strain values are analytically described to determine true stress-strain curves for the local assignment of different material models depending on the hardness. The implementation of the modelling approach in a finite-element simulation is presented for a punched electrical steel sheet specimen under monotonic loading. The simulation results are basically in good agreement with experimental data and confirm the expected influence on the mechanical material behaviour due to the shear cutting process.}, language = {en} }