[{"doi":"10.1007/978-3-030-97675-0_9","title":"A Damage Model for Corrosion Fatigue Due to Hydrogen Embrittlement","author":[{"first_name":"Yuhao","last_name":"Shi","full_name":"Shi, Yuhao"},{"last_name":"Harzheim","full_name":"Harzheim, Sven","first_name":"Sven"},{"first_name":"Martin","full_name":"Hofmann, Martin","last_name":"Hofmann"},{"last_name":"Wallmersperger","full_name":"Wallmersperger, Thomas","first_name":"Thomas"}],"date_created":"2022-12-05T20:53:13Z","publisher":"Springer International Publishing","date_updated":"2023-01-02T11:10:26Z","citation":{"ama":"Shi Y, Harzheim S, Hofmann M, Wallmersperger T. A Damage Model for Corrosion Fatigue Due to Hydrogen Embrittlement. In: <i>Material Modeling and Structural Mechanics</i>. Springer International Publishing; 2022. doi:<a href=\"https://doi.org/10.1007/978-3-030-97675-0_9\">10.1007/978-3-030-97675-0_9</a>","chicago":"Shi, Yuhao, Sven Harzheim, Martin Hofmann, and Thomas Wallmersperger. “A Damage Model for Corrosion Fatigue Due to Hydrogen Embrittlement.” In <i>Material Modeling and Structural Mechanics</i>. Cham: Springer International Publishing, 2022. <a href=\"https://doi.org/10.1007/978-3-030-97675-0_9\">https://doi.org/10.1007/978-3-030-97675-0_9</a>.","ieee":"Y. Shi, S. Harzheim, M. Hofmann, and T. Wallmersperger, “A Damage Model for Corrosion Fatigue Due to Hydrogen Embrittlement,” in <i>Material Modeling and Structural Mechanics</i>, Cham: Springer International Publishing, 2022.","apa":"Shi, Y., Harzheim, S., Hofmann, M., &#38; Wallmersperger, T. (2022). A Damage Model for Corrosion Fatigue Due to Hydrogen Embrittlement. In <i>Material Modeling and Structural Mechanics</i>. Springer International Publishing. <a href=\"https://doi.org/10.1007/978-3-030-97675-0_9\">https://doi.org/10.1007/978-3-030-97675-0_9</a>","mla":"Shi, Yuhao, et al. “A Damage Model for Corrosion Fatigue Due to Hydrogen Embrittlement.” <i>Material Modeling and Structural Mechanics</i>, Springer International Publishing, 2022, doi:<a href=\"https://doi.org/10.1007/978-3-030-97675-0_9\">10.1007/978-3-030-97675-0_9</a>.","bibtex":"@inbook{Shi_Harzheim_Hofmann_Wallmersperger_2022, place={Cham}, title={A Damage Model for Corrosion Fatigue Due to Hydrogen Embrittlement}, DOI={<a href=\"https://doi.org/10.1007/978-3-030-97675-0_9\">10.1007/978-3-030-97675-0_9</a>}, booktitle={Material Modeling and Structural Mechanics}, publisher={Springer International Publishing}, author={Shi, Yuhao and Harzheim, Sven and Hofmann, Martin and Wallmersperger, Thomas}, year={2022} }","short":"Y. Shi, S. Harzheim, M. Hofmann, T. Wallmersperger, in: Material Modeling and Structural Mechanics, Springer International Publishing, Cham, 2022."},"year":"2022","place":"Cham","publication_status":"published","publication_identifier":{"issn":["1869-8433","1869-8441"],"isbn":["9783030976743","9783030976750"]},"language":[{"iso":"eng"}],"keyword":["Hydrogen embrittlement","Fatigue","Continuum damage mechanics","Numerical simulation","Multi-field problem"],"user_id":"14931","department":[{"_id":"630"}],"project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"name":"TRR 285 - B: TRR 285 - Project Area B","_id":"132"},{"_id":"142","name":"TRR 285 – B03: TRR 285 - Subproject B03"}],"_id":"34209","status":"public","abstract":[{"lang":"eng","text":"Predicting the durability of components subjected to mechanical load under environmental conditions leading to corrosion is one of the most challenging tasks in mechanical engineering. The demand for precise predictions increases with the desire of lightweight design in transportation due to environmental protection. Corrosion with its manifold of mechanisms often occurs together with the production of hydrogen by electrochemical reactions. Hydrogen embrittlement is one of the most feared damage mechanisms for metal constructions often leading to early and unexpected failure. Until now, predictions are mostly based on costly experiments. Hence, a rational predictive model based on the fundamentals of electrochemistry and damage mechanics has to be developed in order to reduce the costs. In this work, a first model approach based on classical continuum damage mechanics is presented to couple both, the damage induced by the mechanical stress and the hydrogen embrittlement. An elaborated two-scale model based on the selfconsistent theory is applied to describe the mechanical damage due to fatigue. The electrochemical kinetics are elucidated through the Langmuir adsorption isotherm and the diffusion equation to consider the impact of hydrogen embrittlement on the fatigue. The modeling of the mechanism of hydrogen embrittlement defines the progress of damage accumulation due to the electrochemistry. The durability results like the S-N diagram show the influence of hydrogen embrittlement by varying, e.g. the fatigue frequency or the stress ratio."}],"type":"book_chapter","publication":"Material Modeling and Structural Mechanics"},{"quality_controlled":"1","issue":"1","year":"2022","publisher":"MDPI AG","date_created":"2022-01-10T08:25:58Z","title":"Low Cycle Fatigue Performance of Additively Processed and Heat-Treated Ti-6Al-7Nb Alloy for Biomedical Applications","publication":"Metals","abstract":[{"lang":"eng","text":"In biomedical engineering, laser powder bed fusion is an advanced manufacturing technology, which enables, for example, the production of patient-customized implants with complex geometries. Ti-6Al-7Nb shows promising improvements, especially regarding biocompatibility, compared with other titanium alloys. The biocompatible features are investigated employing cytocompatibility and antibacterial examinations on Al2O3-blasted and untreated surfaces. The mechanical properties of additively manufactured Ti-6Al-7Nb are evaluated in as-built and heat-treated conditions. Recrystallization annealing (925 °C for 4 h), β annealing (1050 °C for 2 h), as well as stress relieving (600 °C for 4 h) are applied. For microstructural investigation, scanning and transmission electron microscopy are performed. The different microstructures and the mechanical properties are compared. Mechanical behavior is determined based on quasi-static tensile tests and strain-controlled low cycle fatigue tests with total strain amplitudes εA of 0.35%, 0.5%, and 0.8%. The as-built and stress-relieved conditions meet the mechanical demands for the tensile properties of the international standard ISO 5832-11. Based on the Coffin–Manson–Basquin relation, fatigue strength and ductility coefficients, as well as exponents, are determined to examine fatigue life for the different conditions. The stress-relieved condition exhibits, overall, the best properties regarding monotonic tensile and cyclic fatigue behavior.</jats:p>"}],"file":[{"file_size":6222748,"access_level":"closed","file_id":"29197","file_name":"Hein et al - 2022 - Low Cycle Fatigue Performance of Additively Processed and Heat-Treated Ti-6Al-7Nb Alloy for Biomedical Applications.pdf","date_updated":"2022-01-10T08:27:11Z","date_created":"2022-01-10T08:27:11Z","creator":"maxhein","success":1,"relation":"main_file","content_type":"application/pdf"}],"ddc":["620"],"keyword":["General Materials Science","Metals and Alloys","laser powder bed fusion","Ti-6Al-7Nb","titanium alloy","biomedical engineering","low cycle fatigue","microstructure","nanostructure"],"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["2075-4701"]},"has_accepted_license":"1","citation":{"chicago":"Hein, Maxwell, David Kokalj, Nelson Filipe Lopes Dias, Dominic Stangier, Hilke Oltmanns, Sudipta Pramanik, Manfred Kietzmann, et al. “Low Cycle Fatigue Performance of Additively Processed and Heat-Treated Ti-6Al-7Nb Alloy for Biomedical Applications.” <i>Metals</i> 12, no. 1 (2022). <a href=\"https://doi.org/10.3390/met12010122\">https://doi.org/10.3390/met12010122</a>.","ieee":"M. Hein <i>et al.</i>, “Low Cycle Fatigue Performance of Additively Processed and Heat-Treated Ti-6Al-7Nb Alloy for Biomedical Applications,” <i>Metals</i>, vol. 12, no. 1, Art. no. 122, 2022, doi: <a href=\"https://doi.org/10.3390/met12010122\">10.3390/met12010122</a>.","ama":"Hein M, Kokalj D, Lopes Dias NF, et al. Low Cycle Fatigue Performance of Additively Processed and Heat-Treated Ti-6Al-7Nb Alloy for Biomedical Applications. <i>Metals</i>. 2022;12(1). doi:<a href=\"https://doi.org/10.3390/met12010122\">10.3390/met12010122</a>","apa":"Hein, M., Kokalj, D., Lopes Dias, N. F., Stangier, D., Oltmanns, H., Pramanik, S., Kietzmann, M., Hoyer, K.-P., Meißner, J., Tillmann, W., &#38; Schaper, M. (2022). Low Cycle Fatigue Performance of Additively Processed and Heat-Treated Ti-6Al-7Nb Alloy for Biomedical Applications. <i>Metals</i>, <i>12</i>(1), Article 122. <a href=\"https://doi.org/10.3390/met12010122\">https://doi.org/10.3390/met12010122</a>","bibtex":"@article{Hein_Kokalj_Lopes Dias_Stangier_Oltmanns_Pramanik_Kietzmann_Hoyer_Meißner_Tillmann_et al._2022, title={Low Cycle Fatigue Performance of Additively Processed and Heat-Treated Ti-6Al-7Nb Alloy for Biomedical Applications}, volume={12}, DOI={<a href=\"https://doi.org/10.3390/met12010122\">10.3390/met12010122</a>}, number={1122}, journal={Metals}, publisher={MDPI AG}, author={Hein, Maxwell and Kokalj, David and Lopes Dias, Nelson Filipe and Stangier, Dominic and Oltmanns, Hilke and Pramanik, Sudipta and Kietzmann, Manfred and Hoyer, Kay-Peter and Meißner, Jessica and Tillmann, Wolfgang and et al.}, year={2022} }","mla":"Hein, Maxwell, et al. “Low Cycle Fatigue Performance of Additively Processed and Heat-Treated Ti-6Al-7Nb Alloy for Biomedical Applications.” <i>Metals</i>, vol. 12, no. 1, 122, MDPI AG, 2022, doi:<a href=\"https://doi.org/10.3390/met12010122\">10.3390/met12010122</a>.","short":"M. Hein, D. Kokalj, N.F. Lopes Dias, D. Stangier, H. Oltmanns, S. Pramanik, M. Kietzmann, K.-P. Hoyer, J. Meißner, W. Tillmann, M. Schaper, Metals 12 (2022)."},"intvolume":"        12","oa":"1","date_updated":"2023-04-27T16:42:19Z","author":[{"last_name":"Hein","orcid":"0000-0002-3732-2236","id":"52771","full_name":"Hein, Maxwell","first_name":"Maxwell"},{"first_name":"David","last_name":"Kokalj","full_name":"Kokalj, David"},{"first_name":"Nelson Filipe","full_name":"Lopes Dias, Nelson Filipe","last_name":"Lopes Dias"},{"last_name":"Stangier","full_name":"Stangier, Dominic","first_name":"Dominic"},{"full_name":"Oltmanns, Hilke","last_name":"Oltmanns","first_name":"Hilke"},{"last_name":"Pramanik","full_name":"Pramanik, Sudipta","first_name":"Sudipta"},{"full_name":"Kietzmann, Manfred","last_name":"Kietzmann","first_name":"Manfred"},{"last_name":"Hoyer","id":"48411","full_name":"Hoyer, Kay-Peter","first_name":"Kay-Peter"},{"first_name":"Jessica","last_name":"Meißner","full_name":"Meißner, Jessica"},{"first_name":"Wolfgang","full_name":"Tillmann, Wolfgang","last_name":"Tillmann"},{"first_name":"Mirko","last_name":"Schaper","id":"43720","full_name":"Schaper, Mirko"}],"volume":12,"main_file_link":[{"open_access":"1","url":"https://www.mdpi.com/2075-4701/12/1/122"}],"doi":"10.3390/met12010122","type":"journal_article","status":"public","_id":"29196","user_id":"43720","department":[{"_id":"158"}],"article_type":"original","article_number":"122","file_date_updated":"2022-01-10T08:27:11Z"},{"quality_controlled":"1","year":"2021","date_created":"2021-03-22T14:15:22Z","publisher":"Elsevier","title":"Experimental failure analysis of adhesively bonded steel/CFRP joints under quasi-static and cyclic tensile-shear and peel loading","publication":"International Journal of Adhesion and Adhesives","language":[{"iso":"eng"}],"keyword":["Epoxy adhesive","fatigue strength","shear","peel","Steel-CFRP joints"],"publication_status":"published","publication_identifier":{"issn":["0143-7496"]},"citation":{"bibtex":"@article{Kowatz_Teutenberg_Meschut_2021, title={Experimental failure analysis of adhesively bonded steel/CFRP joints under quasi-static and cyclic tensile-shear and peel loading}, volume={107}, DOI={<a href=\"https://doi.org/10.1016/j.ijadhadh.2021.102851\">10.1016/j.ijadhadh.2021.102851</a>}, number={102851}, journal={International Journal of Adhesion and Adhesives}, publisher={Elsevier}, author={Kowatz, Jannik and Teutenberg, Dominik and Meschut, Gerson}, year={2021} }","mla":"Kowatz, Jannik, et al. “Experimental Failure Analysis of Adhesively Bonded Steel/CFRP Joints under Quasi-Static and Cyclic Tensile-Shear and Peel Loading.” <i>International Journal of Adhesion and Adhesives</i>, vol. 107, 102851, Elsevier, 2021, doi:<a href=\"https://doi.org/10.1016/j.ijadhadh.2021.102851\">10.1016/j.ijadhadh.2021.102851</a>.","short":"J. Kowatz, D. Teutenberg, G. Meschut, International Journal of Adhesion and Adhesives 107 (2021).","apa":"Kowatz, J., Teutenberg, D., &#38; Meschut, G. (2021). Experimental failure analysis of adhesively bonded steel/CFRP joints under quasi-static and cyclic tensile-shear and peel loading. <i>International Journal of Adhesion and Adhesives</i>, <i>107</i>, Article 102851. <a href=\"https://doi.org/10.1016/j.ijadhadh.2021.102851\">https://doi.org/10.1016/j.ijadhadh.2021.102851</a>","chicago":"Kowatz, Jannik, Dominik Teutenberg, and Gerson Meschut. “Experimental Failure Analysis of Adhesively Bonded Steel/CFRP Joints under Quasi-Static and Cyclic Tensile-Shear and Peel Loading.” <i>International Journal of Adhesion and Adhesives</i> 107 (2021). <a href=\"https://doi.org/10.1016/j.ijadhadh.2021.102851\">https://doi.org/10.1016/j.ijadhadh.2021.102851</a>.","ieee":"J. Kowatz, D. Teutenberg, and G. Meschut, “Experimental failure analysis of adhesively bonded steel/CFRP joints under quasi-static and cyclic tensile-shear and peel loading,” <i>International Journal of Adhesion and Adhesives</i>, vol. 107, Art. no. 102851, 2021, doi: <a href=\"https://doi.org/10.1016/j.ijadhadh.2021.102851\">10.1016/j.ijadhadh.2021.102851</a>.","ama":"Kowatz J, Teutenberg D, Meschut G. Experimental failure analysis of adhesively bonded steel/CFRP joints under quasi-static and cyclic tensile-shear and peel loading. <i>International Journal of Adhesion and Adhesives</i>. 2021;107. doi:<a href=\"https://doi.org/10.1016/j.ijadhadh.2021.102851\">10.1016/j.ijadhadh.2021.102851</a>"},"intvolume":"       107","author":[{"full_name":"Kowatz, Jannik","id":"32252","last_name":"Kowatz","orcid":"0000-0002-4972-4718","first_name":"Jannik"},{"last_name":"Teutenberg","full_name":"Teutenberg, Dominik","id":"537","first_name":"Dominik"},{"first_name":"Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut","id":"32056","full_name":"Meschut, Gerson"}],"volume":107,"date_updated":"2023-01-16T10:18:26Z","doi":"10.1016/j.ijadhadh.2021.102851","type":"journal_article","status":"public","user_id":"32252","department":[{"_id":"157"}],"_id":"21549","article_type":"original","article_number":"102851"},{"keyword":["adhesion","circuit reliability","deformation","diffusion","fatigue cracks","friction","interconnections","lead bonding","van der Waals forces","Cu","adhering process","adhesion process","ampacity improvement","bond quality improvement","cleaning process","diffusing process","fatigue fracture failure","friction energy","friction model","heat dissipation","mechanical strength","piezoelectric triaxial force sensor","predeforming process","size 500 mum","total contact area","van der Waals forces","wedge copper wire bonding","Bonding","Copper","Finite element analysis","Force","Friction","Substrates","Wires"],"language":[{"iso":"eng"}],"_id":"9868","user_id":"55222","department":[{"_id":"151"}],"abstract":[{"lang":"eng","text":"In order to increase mechanical strength, heat dissipation and ampacity and to decrease failure through fatigue fracture, wedge copper wire bonding is being introduced as a standard interconnection method for mass production. To achieve the same process stability when using copper wire instead of aluminum wire a profound understanding of the bonding process is needed. Due to the higher hardness of copper compared to aluminum wire it is more difficult to approach the surfaces of wire and substrate to a level where van der Waals forces are able to arise between atoms. Also, enough friction energy referred to the total contact area has to be generated to activate the surfaces. Therefore, a friction model is used to simulate the joining process. This model calculates the resulting energy of partial areas in the contact surface and provides information about the adhesion process of each area. The focus here is on the arising of micro joints in the contact area depending on the location in the contact and time. To validate the model, different touchdown forces are used to vary the initial contact areas of wire and substrate. Additionally, a piezoelectric tri-axial force sensor is built up to identify the known phases of pre-deforming, cleaning, adhering and diffusing for the real bonding process to map with the model. Test substrates as DBC and copper plate are used to show the different formations of a wedge bond connection due to hardness and reaction propensity. The experiments were done by using 500 $\\mu$m copper wire and a standard V-groove tool."}],"status":"public","type":"conference","publication":"Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th","title":"Improving the bond quality of copper wire bonds using a friction model approach","doi":"10.1109/ECTC.2014.6897500","date_updated":"2019-09-16T10:57:58Z","date_created":"2019-05-20T12:11:44Z","author":[{"first_name":"Simon","full_name":"Althoff, Simon","last_name":"Althoff"},{"last_name":"Neuhaus","full_name":"Neuhaus, Jan","first_name":"Jan"},{"last_name":"Hemsel","full_name":"Hemsel, Tobias","id":"210","first_name":"Tobias"},{"full_name":"Sextro, Walter","id":"21220","last_name":"Sextro","first_name":"Walter"}],"year":"2014","citation":{"apa":"Althoff, S., Neuhaus, J., Hemsel, T., &#38; Sextro, W. (2014). Improving the bond quality of copper wire bonds using a friction model approach. In <i>Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th</i> (pp. 1549–1555). <a href=\"https://doi.org/10.1109/ECTC.2014.6897500\">https://doi.org/10.1109/ECTC.2014.6897500</a>","bibtex":"@inproceedings{Althoff_Neuhaus_Hemsel_Sextro_2014, title={Improving the bond quality of copper wire bonds using a friction model approach}, DOI={<a href=\"https://doi.org/10.1109/ECTC.2014.6897500\">10.1109/ECTC.2014.6897500</a>}, booktitle={Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th}, author={Althoff, Simon and Neuhaus, Jan and Hemsel, Tobias and Sextro, Walter}, year={2014}, pages={1549–1555} }","mla":"Althoff, Simon, et al. “Improving the Bond Quality of Copper Wire Bonds Using a Friction Model Approach.” <i>Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th</i>, 2014, pp. 1549–55, doi:<a href=\"https://doi.org/10.1109/ECTC.2014.6897500\">10.1109/ECTC.2014.6897500</a>.","short":"S. Althoff, J. Neuhaus, T. Hemsel, W. Sextro, in: Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th, 2014, pp. 1549–1555.","ieee":"S. Althoff, J. Neuhaus, T. Hemsel, and W. Sextro, “Improving the bond quality of copper wire bonds using a friction model approach,” in <i>Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th</i>, 2014, pp. 1549–1555.","chicago":"Althoff, Simon, Jan Neuhaus, Tobias Hemsel, and Walter Sextro. “Improving the Bond Quality of Copper Wire Bonds Using a Friction Model Approach.” In <i>Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th</i>, 1549–55, 2014. <a href=\"https://doi.org/10.1109/ECTC.2014.6897500\">https://doi.org/10.1109/ECTC.2014.6897500</a>.","ama":"Althoff S, Neuhaus J, Hemsel T, Sextro W. Improving the bond quality of copper wire bonds using a friction model approach. In: <i>Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th</i>. ; 2014:1549-1555. doi:<a href=\"https://doi.org/10.1109/ECTC.2014.6897500\">10.1109/ECTC.2014.6897500</a>"},"page":"1549-1555","quality_controlled":"1"}]