TY - CHAP
AU - Eikermann, Larissa
ED - Ströter-Bender, Jutta
ID - 45276
SN - 9783828876668
T2 - Das Erbe der Kinder: Provenienzforschung und Sammlungsgeschichte von Kinder- und Jugendzeichnungen: Museen, Archive, private Kollektionen und "verschwundene Sammlungen" = The children's heritage: provenance research and the history of children's and youth drawings collections: museums, archives, private holdings and "lost collections"
TI - Children´s drawings on Pippi & Co. - A visit to the Astrid Lindgren Archive in the Royal Library of Stockholm. Sweden
VL - Bd. 30
ER -
TY - CHAP
AU - Kamcili-Yildiz, Naciye
ED - Espelage, Christian
ED - Mohagheghi, Hamideh
ED - Schober, Michael
ID - 42096
T2 - Interreligiöse Öffnung durch Begegnung. Grundlagen - Erfahrungen - Perspektiven im Kontext des christlich-islamischen Dialogs
TI - Begegnungslernen in den Kerncurricula des islamischen Religionsunterrichts
VL - 43
ER -
TY - BOOK
AU - Kamcili-Yildiz, Naciye
ID - 42058
SN - 973-3830942958
TI - Zwischen Glaubensvermittlung und Reflexivität: Eine quantitative Studie zu professionellen Kompetenzen von islamischen ReligionslehrerInnen
VL - 682
ER -
TY - JOUR
AU - Mustafa, Abdul Rahman
ID - 42265
IS - 8
JF - Political Theology
TI - Supernatural, Unnatural, Queer: Gratitude and Nature in Islamic Political Theology
VL - 22
ER -
TY - JOUR
AU - Aghaei Abrandabadi, Seyed Ali
AU - Marx, Michel
ID - 42224
IS - 1
JF - Journal of Iranian National Museum
TI - Carbon Dating of Seven Parchment Qurʾān Manuscripts and One Syriac Bible of the National Museum of Iran
VL - 2
ER -
TY - JOUR
AU - Ghaffar, Zishan
ID - 42341
IS - 2
JF - Der Islam
TI - Kontrafaktische Intertextualität im Koran und die exegetische Tradition des syrischen Christentums
VL - 98
ER -
TY - CHAP
AU - Tatari, Muna
ED - Khalfaoui, Mouez
ED - Ehret, Jean
ID - 37120
SN - 9783451391439
T2 - Islamische Theologie in Deutschland. Ein Modell für Europa und die Welt
TI - Islamische systematische Theologie in Deutschland: Konturen eines jungen Faches
ER -
TY - BOOK
AU - Tatari, Muna
AU - von Stosch, Klaus
ID - 37035
SN - 3451389649
TI - Prophetin - Jungfrau - Mutter: Maria im Koran
ER -
TY - GEN
AU - Nassery, Idris
ID - 42479
T2 - Frankfurter Allgemeine Zeitung
TI - Die unerwünschte Empfehlung, Hybris: Woran der Westen in Afghanistan tatsächlich gescheitert ist
ER -
TY - JOUR
AU - Kulgemeyer, Christoph
AU - Kempin, Maren
AU - Weißbach, Anna
AU - Borowski, Andreas
AU - Buschhüter, David
AU - Enkrott, Patrick
AU - Reinhold, Peter
AU - Riese, Josef
AU - Schecker, Horst
AU - Schröder, Jan
AU - Vogelsang, Christoph
ID - 45177
IS - 18
JF - International Journal of Science Education
KW - Education
SN - 0950-0693
TI - Exploring the impact of pre-service science teachers’ reflection skills on the development of professional knowledge during a field experience
VL - 43
ER -
TY - CONF
AU - Große-Heilmann, Rike Isabel
AU - Burde, Jan-Philipp
AU - Riese, Josef
AU - Schubatzky, Thomas
AU - Weiler, David
ID - 45407
T2 - PhyDid B-Didaktik der Physik-Beiträge zur DPG-Frühjahrstagung 2021
TI - Erwerb und Messung physikdidaktischer Kompetenzen zum Einsatz digitaler Medien
ER -
TY - CONF
AU - Weiler, David
AU - Burde, Jan-Philipp
AU - Große-Heilmann, Rike Isabel
AU - Lachner, Andreas
AU - Riese, Josef
AU - Schubatzky, Thomas
ID - 45408
T2 - PhyDid B-Didaktik der Physik-Beiträge zur DPG-Frühjahrstagung 2021
TI - Entwicklung eines Seminars zur Förderung des Konzeptverständnisses mittels digitaler Medien
ER -
TY - CHAP
AU - Haghani Fazl, Mohammad
ED - Grössl, Johannes
ED - von Stosch, Klaus
ID - 45436
T2 - Impeccability and Temptation: Understanding Christ's Divine and Human Will
TI - The Scope of ‘iṣma and Qur’anic Evidence
ER -
TY - JOUR
AU - Hein, Maxwell
AU - Hoyer, Kay-Peter
AU - Schaper, Mirko
ID - 41511
IS - 7
JF - Materialwissenschaft und Werkstofftechnik
KW - Mechanical Engineering
KW - Mechanics of Materials
KW - Condensed Matter Physics
KW - General Materials Science
SN - 0933-5137
TI - Additively processed TiAl6Nb7 alloy for biomedical applications
VL - 52
ER -
TY - JOUR
AB -
Purpose
The currently existing restrictions regarding the deployment of additively manufactured components because of poor surface roughness, porosity and residual stresses as well as their influence on the low-cycle fatigue (LCF) strength are addressed in this paper.
Design/methodology/approach
This study aims to evaluating the effect of different pre- and post-treatments on the LCF strength of additively manufactured 316L parts. Therefore, 316L specimens manufactured by laser powder bed fusion were examined in their as-built state as well as after grinding, or coating with regard to the surface roughness, residual stresses and LCF strength. To differentiate between topographical effects and residual stress-related phenomena, stress-relieved 316L specimens served as a reference throughout the investigations. To enable an alumina coating of the 316L components, atmospheric plasma spraying was used, and the near-surface residual stresses and the surface roughness are measured and investigated.
Findings
The results have shown that the applied pre- and post-treatments such as stress-relief heat treatment, grinding and alumina coating have each led to an increase in LCF strength of the 316L specimens. In contrast, the non-heat-treated specimens predominantly exhibited coating delamination.
Originality/value
To the best of the authors’ knowledge, this is the first study of the correlation between the LCF behavior of additively manufactured uncoated 316L specimens in comparison with additively manufactured 316L specimens with an alumina coating.
AU - Garthe, Kai-Uwe
AU - Hoyer, Kay-Peter
AU - Hagen, Leif
AU - Tillmann, Wolfgang
AU - Schaper, Mirko
ID - 41507
IS - 5
JF - Rapid Prototyping Journal
KW - Industrial and Manufacturing Engineering
KW - Mechanical Engineering
SN - 1355-2546
TI - Correlation between pre- and post-treatments of additively manufactured 316L parts and the resulting low cycle fatigue behavior
VL - 28
ER -
TY - JOUR
AB - Processing aluminum alloys employing powder bed fusion of metals (PBF-LB/M) is becoming more attractive for the industry, especially if lightweight applications are needed. Unfortunately, high-strength aluminum alloys such as AA7075 are prone to hot cracking during PBF-LB/M, as well as welding. Both a large solidification range promoted by the alloying elements zinc and copper and a high thermal gradient accompanied with the manufacturing process conditions lead to or favor hot cracking. In the present study, a simple method for modifying the powder surface with titanium carbide nanoparticles (NPs) as a nucleating agent is aimed. The effect on the microstructure with different amounts of the nucleating agent is shown. For the aluminum alloy 7075 with 2.5 ma% titanium carbide nanoparticles, manufactured via PBF-LB/M, crack-free samples with a refined microstructure having no discernible melt pool boundaries and columnar grains are observed. After using a two-step ageing heat treatment, ultimate tensile strengths up to 465 MPa and an 8.9% elongation at break are achieved. Furthermore, it is demonstrated that not all nanoparticles used remain in the melt pool during PBF-LB/M.
AU - Heiland, Steffen
AU - Milkereit, Benjamin
AU - Hoyer, Kay-Peter
AU - Zhuravlev, Evgeny
AU - Kessler, Olaf
AU - Schaper, Mirko
ID - 41506
IS - 23
JF - Materials
KW - General Materials Science
SN - 1996-1944
TI - Requirements for Processing High-Strength AlZnMgCu Alloys with PBF-LB/M to Achieve Crack-Free and Dense Parts
VL - 14
ER -
TY - JOUR
AB - Implants often overtake body function just for a certain time and remain as an unnecessary foreign body or have to be removed. Thus, resorbable implants are highly beneficial to reduce patient burden. Besides established materials, Iron-(Fe)-based alloys are in focus due to superior mechanical properties and good biocompatibility. However, their degradation rate needs to be increased. Phases with high electrochemical potential could promote the dissolution of residual material based on the galvanic coupling. Silver (Ag) is promising due to its high electrochemical potential (+0.8 V vs. SHE), immiscibility with Fe, biocompatibility, and anti-bacterial properties. But to prevent adverse consequences the Ag-particles, remaining after dissolution of the matrix, need to dissolve. Thus, a bioresorbable Ag-alloy is required. Regarding the electrochemical potential and degradation behavior of binary alloys, Cerium (Ce) and Lanthanum (La) are well-suited considering their biocompatibility and antibacterial behavior. Accordingly, this research addresses AgCe and AgCeLa alloys as additives for Fe-based materials with adapted degradation behavior. Furthermore, degradable Ag-alloys combined with inert implant materials could enable the controlled release of antibacterial active Ag-ions.
AU - Krüger, Jan Tobias
AU - Hoyer, Kay-Peter
AU - Schaper, Mirko
ID - 24790
JF - Materials Letters
SN - 0167-577X
TI - Bioresorbable AgCe and AgCeLa alloys for adapted Fe-based implants
VL - 306
ER -
TY - JOUR
AU - Tillmann, Wolfgang
AU - Lopes Dias, Nelson Filipe
AU - Franke, Carlo
AU - Kokalj, David
AU - Stangier, Dominic
AU - Filor, Viviane
AU - Mateus-Vargas, Rafael Hernán
AU - Oltmanns, Hilke
AU - Kietzmann, Manfred
AU - Meißner, Jessica
AU - Hein, Maxwell
AU - Pramanik, Sudipta
AU - Hoyer, Kay-Peter
AU - Schaper, Mirko
AU - Nienhaus, Alexander
AU - Thomann, Carl Arne
AU - Debus, Jörg
ID - 41516
JF - Surface and Coatings Technology
KW - Materials Chemistry
KW - Surfaces
KW - Coatings and Films
KW - Surfaces and Interfaces
KW - Condensed Matter Physics
KW - General Chemistry
SN - 0257-8972
TI - Tribo-mechanical properties and biocompatibility of Ag-containing amorphous carbon films deposited onto Ti6Al4V
VL - 421
ER -
TY - JOUR
AU - Andreiev, Anatolii
AU - Hoyer, Kay-Peter
AU - Dula, Dimitri
AU - Hengsbach, Florian
AU - Grydin, Olexandr
AU - Frolov, Yaroslav
AU - Schaper, Mirko
ID - 41512
JF - Materials Science and Engineering: A
KW - Mechanical Engineering
KW - Mechanics of Materials
KW - Condensed Matter Physics
KW - General Materials Science
SN - 0921-5093
TI - Laser beam melting of functionally graded materials with application-adapted tailoring of magnetic and mechanical performance
VL - 822
ER -
TY - JOUR
AU - Pramanik, Sudipta
AU - Andreiev, Anatolii
AU - Hoyer, Kay-Peter
AU - Schaper, Mirko
ID - 41510
JF - International Journal of Fatigue
KW - Industrial and Manufacturing Engineering
KW - Mechanical Engineering
KW - Mechanics of Materials
KW - General Materials Science
KW - Modeling and Simulation
SN - 0142-1123
TI - Quasi in-situ analysis of fracture path during cyclic loading of double-edged U notched additively manufactured FeCo alloy
VL - 153
ER -