BOOKS

PATENTS

Falldorf, C; Müller, A F; Bergmann, R B; Rukin, I

Verfahren und Vorrichtung zum Wiedergeben von holografischen Bildern

Quelle: Offenlegungsschrift DE 10 2023 134 338A1 (2024)

Kügler, H; Woizeschke, P; Seefeld, T

Quelle: Patentschrift DE 10 2015 115 183 B4 (2024)

PUBLICATIONS

Agour, M; Falldorf, C; Bergmann R B

Lensless Depth Discrimination Based on Speckle Contrast in Holographic Imaging

Quelle: 7th International Conference on Optics, Photonics and Lasers (OPAL' 2024) Palma de Mallorca (7th International Conference on Optics, Photonics and Lasers (OPAL' 2024) 15-17 May 2024, Palma de Mallorca (Balearic Islands), Spain (ISBN: 978-84-09-61372-4)

Agour, M; Falldorf, C; Bergmann R B

Extended-Aperture Shape Measurements Using Spatially Partially Coherent Illumination (ExASPICE)

Quelle: Sensors (2024) 24, 3072. https://doi.org/10.3390/s24103072

Agour, M; Thiemicke, F; Müller, A F; Bergmann, R B; Falldorf, C

Lensless multi-spectral holographic interferometry for optical inspection

Quelle: Frontiers in Photonics (DOI 10.3389/fphot.2024.1416347)

Bohlen, A; Seefeld, T

Influence of the Inner Roughness of Powder Channels on the Powder Propagation Behavior in Laser Metal Deposition

Quelle: Journal of Laser Applications 36, 042007 (2024); doi: 10.2351/7.0001570

Bohlen, A; Seefeld, T

Adaptive powder nozzle setup for enhanced efficiency in laser metal deposition

Quelle: Journal of Laser Applications 36 (2024) 012017-1-11; doi: 10.2351/7.0001183

Bouraoui, Y; Rathmann, L; Niehaves, C; Mikulewitsch, M; Fischer, A

Material removal in laser chemical processing with modulated laser power

Quelle: Journal of Laser Applications 36 (2024) 012013-1-8; doi: 10.2351/7.0001109

Falldorf, C; Müller A F; Bergmann, R B

Beyond Lenses: Unlocking the potential of Digital Holography for Optical Inspection

Quelle: 7th International Conference on Optics, Photonics and Lasers (OPAL' 2024) Palma de Mallorca (7th International Conference on Optics, Photonics and Lasers (OPAL' 2024) 15-17 May 2024, Palma de Mallorca (Balearic Islands), Spain (ISBN: 978-84-09-61372-4)

Gutiérrez-Canas Pazos, C B; Falldorf, C; Bergmann, R B

Characterization of form deviations on technical surfaces through structure function analysis

Quelle: DGaO Proceedings 2024. ISSN: 1614-8436 – urn:nbn:de:0287-2024-A033-9

Henze, I; Mattulat, T

Metal vapor‑induced arc instability in stationary TIG‑welding

Quelle: The International Journal of Advanced Manufacturing Technology (2024) https://doi.org/10.1007/s00170-024-13700-x

Krämer, A; Henze, I; Pordzik, R; Radel, T

Inline detection of process anomalies during laser deep penetration welding of hidden T-joints

Quelle:13th CIRP Conference on Photonic Technologies (LANE 2024), eds.: M. Schmidt, C.B. Arnold, K. Wudy. Elsevier B.V. [Volume 124] (2024) 526 - 529, https://doi.org/10.1016/j.procir.2024.08.167

Langebeck, A; Bohlen, A; Seefeld, T, Zhang, X; Rebelo Kornmeier, J; Hofmann, M; Shaba, S; Fritzen, F

Untersuchung und Vorhersage thermisch induzierter Eigenspannungen in MMC-Verschleißschutzschichten nach dem Laserdispergieren

Quelle: Schweißen und Schneiden 76, 9 (2024) 62-71

Langstädler, L; Beckschwarte, B; Valentino, T; Radel, T

Strain rates in high velocity forming of foils

Quelle: Material Forming - ESAFORM 2024. Materials Research Proceedings 41 (2024) 1527-1535 (https://doi.org/10.21741/9781644903131-169)

Lu, Y; Bouraoui, Y; ; Niehaves; Fischer, C; Radel, T

Laser power modulation between disturbed and undisturbed material removal regime in laser chemical processing

Quelle: Int J Adv Manuf Technol 135, 3983–3989 (2024). https://doi.org/10.1007/s00170-024-14728-9

Mattulat, T

Understanding the coaxial optical coherence tomography signal during the laser welding of hidden T-joints

Quelle: Journal of Laser Applications 36 (2024) 012003, doi: 10.2351/7.0001157

Mitura, N; Müller, A F; Bergmann, R B; Falldorf, C; Ehret, G

Der Einfluss der Wellenvektorunsicherheit auf die Rekonstruktion der Oberflächenform bei einer MArS-Messung

Quelle: DGaO-Proceedings 2024. ISSN: 1614-8436 - urn:nbn:de:0287-2024-A007-4

Möbus, M; Pordzik, R; Krämer, A; Mattulat, T

Process comparison of laser deep penetration welding in pure nickel using blue and infrared wavelengths

Quelle: Welding in the World (2024) https://doi.org/10.1007/s40194-024-01713-9

Möbus, M; Pordzik, R; Seefeld, T

Influence of intensity distributions on the process dynamics during laser deep penetration welding of pure nickel with a flexible ring mode laser source

Quelle: J. Laser Appl. 36, 042073 (2024) https://doi.org/10.2351/7.0001529

Müller, A F; Bergmann, R B; Falldorf, C

High resolution lensless microscopy based on Fresnel propagation

Quelle: Optical Engineering 63/11 (2024) 111805-1-12 (doi: 10.1117/1.OE.63.11.111805)

Müller, A F; Bergmann, R B; Falldorf, C

Lensless microscopy using a virtual imaging approach

Quelle: 7th International Conference on Optics, Photonics and Lasers (OPAL' 2024) . 15-17 May 2024, Palma de Mallorca (Balearic Islands), Spain (doi: 10.13140/RG.2.2.20925.27360)

Müller, A F; Bergmann, R B; Falldorf, C

High resolution lensless microscopy based on Fresnel propagation

Quelle: Optical Engineering, Vol. 63, Issue 11, 111805, (2024), https://doi.org/10.1117/1.OE.63.11.111805

Müller, A F; Gutiérrez-Canas Pazos, B; Mitura, N; Ehret, G; Falldorf, C; Bergmann, R B

Calibrating multi-spot illumination for asphere metrology using shear-interferometry

Quelle: Proc. SPIE 13241, Optical Metrology and Inspection for Industrial Applications XI, 132410N (2024), https://doi.org/10.1117/12.3037594

Müller, S; Krämer, A; Goossens, N; Bendlin, T; Mattulat, T

Influence of varying volume energy densities on the magnetic properties of additively manufactured Ni50Fe50

Quelle: Progress in Additive Manufactioring (2024) https://doi.org/10.1007/s40964-024-00902-8

Müller, S; Radel, T

Impact of fume on two-channel-pyrometric temperature measurements and process stability during laser powder bed fusion

Quelle: Procedia CIRP, Volume 124, 2024, Pages 287-290, ISSN 2212-8271, https://doi.org/10.1016/j.procir.2024.08.119

Müller, S; Radel, T

Ortsaufgelöste Temperaturregelung beim Laserstrahlschmelzen im Pulverbett

Quelle: Schweißen und Schneiden 76, 10 (2024) 60-61

Müller, S, Radel, T

Temperature map based process control for laser powder bed fusion

Quelle: Book of Abstracts MSE24 (2024) 686

Muniraj, I; Falldorf, C; Agour, M

Editorial: Advances in digital holographic microscopy and applications

Quelle: Editorial: Advances in digital holographic microscopy and applications. Front. Photonics 5:1502043

https://doi.org/10.3389/fphot.2024.1502043

Pordzik, R; Seefeld, T

Identifying the direction of weld path deviations in laser deep penetration welding of hidden T-joints by means of OCT

Quelle: Journal of Laser Applications (ICALEO 2024) paper no. 0877-1306-000092

Radel, T; Müller, S

Ortsaufgelöste Temperaturregelung beim Laserstrahlschmelzen im Pulverbett

Quelle: Schweißen und Schneiden 76, 10 (2024) 60-61

Rathmann, L; Radel, T

Laser cleaning of insect residue without surface alteration

Quelle: PhotonicsViews 21, 4 (2024) 2-5 (https://doi.org/10.1002/phvs.202400025)

Sperling, Y; Bergmann, R B

Laser-tracker-based reference measurement for geometric calibration of phase-measuring deflectometry with active display registration

Quelle: Journal of Sensors and Sensor Systems (JSSS) 13, 1–7 (2024) https://doi.org/10.5194/jsss-13-1-2024

Sperling, Y; Bergmann, R B

Phase measuring deflectometry with monoscopic active display registration

Quelle: Proc. SPIE 12997, Optics and Photonics for Advanced Dimensional Metrology III; 1299713 (2024)  https://doi.org/10.1117/12.3015111

Thiemicke, F; Falldorf, C; Bergmann, R B

Fabrication of positionable free-standing microstructures for applications in near-field microscopy

Quelle: DGaO Proceedings 2024 – http://www.dgao-proceedings.de – ISSN: 1614-8436 – urn:nbn:de:0287-2024-B013-4

Volpp, J; Sato, Y; Tsukamoto, M; Rathmann, L; Möller M; Clark, S; Fezzaa, K; Radel, T; Klingbeil, K

The surface tension of boiling steel surfaces

Quelle: Results in Materials 22 (2024) 100583 (https://doi.org/10.1016/j.rinma.2024.100583)

Warneke, P; Bohlen, A; Seefeld, T

Texturing skin-pass rolls by high-speed laser melt injection, laser ablation, and electrolytic etching

Quelle: Journal of Laser Applications 36 (2024) 012011-1-9; doi: 10.2351/7.0001149

Warneke, P; Bohlen, A; Seefeld, T

High-Speed Laser melt Injection for Reinforcing Skin-Pass Rolls

Quelle: International Thermal Spray Conference and Exhibition (ITSC 2024) 409-417. DVS Media GmbH

Warneke, P; Westermeyer, L; Bohlen, A; Seefeld, T

Influencing the Powder Particle Transport in High-Speed Laser Melt Injection

Quelle: J. Laser Appl. 36 (2024) https://doi.org/10.2351/7.0001554

BOOKS

PATENTS

Falldorf, C; Agour, M, Bergmann, R B

Anzeigeeinheit zur dreidimensionalen Wiedergabe, Verfahren zur holografischen Wiedergabe und Hologramm eines bewegten Objektes

Quelle: Patentschrift DE 10 2018 115 785 B4 (2023)

Thomy, C; Tyralla, D; Schnick, M

Kamera zum Bestimmen eines 2D-Wärmebilds sowie System und Prozessregeleinrichtung

Quelle: Patentschrift DE 10 2018 133 518 B4 (2023)

Woizeschke, P; Radel, T; Vollertsen, F

Verfahren zum strahlbasierten Fügen von metallischen Grundwerkstoffen

Quelle: Patentschrift DE 10 2017 100 497 B4 (2023)

PUBLICATIONS

Agour, M; Falldorf, C; Bergmann, R B

Improved 3D form profiler based on extending illumination aperture

Quelle: Optical Measurement Systems for Industrial Inspection XIII (2023), ed. by Peter Lehmann. Proc. of SPIE Vol. 12618, 126180T (2023) SPIE · 0277-786X, doi: 10.1117/12.2673783

Ahlers, T; Pordzik, R; Mattulat, T

Approaches for automatic detection of mispositioning during laser welding in hidden T-joints using optical coherence tomography

Quelle: Tagungsband 13. Mittweidaer Lasertagung, Scientific Reports, Journal of the University of Applied Sciences Mittweida, Nr. 3 (2023) ISSN 1437-7624

Bartsch, J; Müller, S; Mattulat, T; Bergmann, R B

Hochpräzises, dreidimensionales Erfassen des schichtweisen Lagenaufbaus beim selektiven Laserstrahlschmelzen mittels Streifenprojektion

Quelle: Schweißen und Schneiden 75, 3 (2023) 160-165

Bergmann, R B; Falldorf, C; Garcia-Ortiz, A; Müller, A F; Agour, A; Bockelmann, C

The coherence function for optical metrology: A new paradigm and the role of information theory and compressed sensing

Quelle: Proc. SPIE 12619, Modeling Aspects in Optical Metrology IX, 1261902 (2023) doi 10.1117/12.2675922

Bohlen, A; Langebeck, A; Seefeld, T

Temperature and distortion in laser melt injection of MMC wear-resistant coatings in a copper beryllium alloy

Quelle: NOLAMP- Nordic Laser Materials Processing Conference (19TH-NOLAMP-2023). IOP Conference Series: Materials Science and Engineering 1296 (2023) 12034. DOI: 10.1088/1757-899X/1296/1/012034

Bohlen, A; Tyralla, D; Seefeld, T

Characterization method for different powder nozzle types used in laser metal deposition

Quelle: Proc. of Lasers in Manufacturing Conference 2023 (LiM 2023). German Scientific Laser Society/Wissenschaftliche Gesellschaft Lasertechnik e.V. (WLT e.V.)

Diegel, C; Mattulat, T; Schricker, K; Schmidt, L; Seefeld, T; Bergmann, J P; Woizeschke, P

Interaction between Local Shielding Gas Supply and Laser Spot Size on Spatter Formation in Laser Beam Welding of AISI 304

Quelle: pplied Sciences 13 (2023) 10507 (https://doi.org/10.3390/app131810507)

Falldorf, C; Thiemicke, F; Müller, A F; Agour M; Bergmann, R B

Flash-profilometry: fullfield lensless acquisition of spectral holograms for coherence scanning profilometry

Quelle: Optics Express 31, 17 (2023) 27494 (doi.org/10.1364/OE.493711)

Faue, P; Rathmann, L; Möller, M; Hassan, M; Clark, S, Fezzaa, K; Klingbeil, K; Richter, B; Volpp, J; Radel, T; Pfefferkorn, F E

High-speed X-ray study of process dynamics caused by surface features during continuous-wave laser polishing

Quelle: CIRP Annals Manufacturing Technology 72 (2023) 201-204 (doi.org/10.1016/j.cirp.2023.04.026)

Halisch, C; Milcke B; Radel, T; Rentsch, R; Seefeld, T

Influence of oxygen content in the shielding gas chamber on mechanical properties and macroscopic structure of Ti-6Al-4V during wire arc additive manufacturing

Quelle: Int J Adv Manuf Technol 124 (2023) 1065–1076 (doi.org/10.1007/s00170-022-10214-2)

Hildinger, P; Seefeld, T; Bohlen, A

Characterization of optical emissions during laser metal deposition for the implementation of an in-process powder stream monitoring

Quelle: Journal of Laser Applications 35 (2023) 042048-1-6 (doi: 10.2351/7.0001161)

Karimi, J; Bohlen, A; Komboj, N; Seefeld, T

Automated Determination of Grain Features for Wire Arc Additive Manufacturing

Quelle: Journal of Materials Engineering and Performance (2023) doi.org/10.1007/s11665-023-08266-w

Krämer, A; Pordzik, R; Mattulat, T

Influence of the airborne sound sensor position on the detectability of acoustic emissions during deep penetration laser welding

Quelle: Tagungsband 13. Mittweidaer Lasertagung, Scientific Reports, Journal of the University of Applied Sciences Mittweida, Nr. 3 (2023) 57-62 (ISSN 1437-7624)

Langebeck, A; Bohlen, A; Seefeld, T

Laserdispergieren in ETP-Kupfer mit grünem Laser

Quelle: Laser Magazin 1 (2023) 8-10

Langebeck, A; Bohlen, A; Seefeld, T; Zhang, X; Rebelo Kornmeier, J; Hofmann, M; Sharba, S, Fritzen, F

Messen und Vorhersagen von thermisch induzierten Eigenspannungen in MMC-Verschleißschutzschichten nach dem Laserstrahldispergieren in Kupferwerkstoffen

Quelle: Proc. of the DVS CONGRESS 2023 Große Schweißtechnische Tagung DVS Campus. DVS Berichte 389. DVS Media GmbH, Düsseldorf (2023) 704-714

Lu, Y; Radel, T

Nitinol flanges fabricated by laser rod end melting and immediate flange processing

Quelle: The International Journal of Advanced Manufacturing Technology (2023) doi.org/10.1007/s00170-023-12137-y)

Lu, Y; Volpp, J; Radel, T

Feasibility study on laser rod end melting of stainless-steel microtubes

Quelle: Proc. of Lasers in Manufacturing Conference 2023 (LiM 2023). German Scientific Laser Society/Wissenschaftliche Gesellschaft Lasertechnik e.V. (WLT e.V.)

Mikulewitsch, M; Boraoui, Y; Radel, T; Stöbener, D; Fischer A

Near-process Indirect Surface Geometry and Temperature Measurement for Laser Chemical Machining (LCM)

Quelle: Proc. of the Sensor and Measurements Science International Conference (SMSI 2023) 338-339 (DOI 10.5162/SMSI2023/P30)

Möbus, M; Woizeschke, P

Keyhole‑in‑keyhole formation by adding a coaxially superimposed single‑mode laser beam in disk laser deep penetration welding

Quelle: Welding in the World (2023) doi.org/10.1007/s40194-023-01484-9

Müller, S; Pordzik, R; Mattulat, T

Investigation on the correlations between heat accumulations and actual part defects during laser powder bed fusion using heat maps

Quelle: Proc. of Lasers in Manufacturing Conference 2023 (LiM 2023). German Scientific Laser Society/Wissenschaftliche Gesellschaft Lasertechnik e.V. (WLT e.V.)

Ramoliya, M; Bohlen, A; Seefeld, T

Distribution of SFTC, NbC, and Cr3C2 particles in aluminium bronze by laser melt injection

Quelle: Proc. of Lasers in Manufacturing Conference 2023 (LiM 2023). German Scientific Laser Society/Wissenschaftliche Gesellschaft Lasertechnik e.V. (WLT e.V.)

Pordzik, R; Ahlers, T; Mattulat, T

Enhancement of weld depth analysis in laser welding by extension of the oct data scope

Quelle: Proc. of Lasers in Manufacturing Conference 2023 (LiM 2023). German Scientific Laser Society/Wissenschaftliche Gesellschaft Lasertechnik e.V. (WLT e.V.)

Pordzik, R; Mattulat, T; Woizeschke, P

Frontal pyrometric snapshot measurements of the keyhole wall temperature in laser welding of pure aluminium

Quelle: Welding in the World (2023) https://doi.org/10.1007/s40194-023-01636-x

Schinderling, A; Bohlen, A; Seefeld, T

In-process monitoring and measurement of track geometry for laser metal deposition with laser triangulation

Quelle: Proc. of Lasers in Manufacturing Conference 2023 (LiM 2023). German Scientific Laser Society/Wissenschaftliche Gesellschaft Lasertechnik e.V. (WLT e.V.)

Schinderling, A; Bohlen, A; Seefeld, T; Falldorf, H

In-process monitoring of track geometry as a control approach for laser metal deposition

Quelle: NOLAMP- Nordic Laser Materials Processing Conference (19TH-NOLAMP-2023). IOP Conference Series: Materials Science and Engineering 1296 (2023) 12010. DOI: 10.1088/1757-899X/1296/1/012010

Sperling, Y; Bergmann, R B

Active Display Registration in Phase Measuring Deflectometry

Quelle: Proc. of Sensor and Measurement Science International Conference (SMSI 2023), 49-50 (doi: 10.5162/SMSI2023/A3.3)

Stephen, A; Valentino, T, Radel, T; Vollertsen, F

So lässt sich die Biegewinkelstreuung reduzieren

Quelle: Blechonline (2023) https://www.blechonline.de/so-laesst-sich-die-biegewinkelstreuung-reduzieren

Stephen, A; Valentino, T; Radel, T; Vollertsen, F

3D-Präzisionsgitter mit minimalen Stegbreiten

Quelle: Mikroproduktion 04 (2023) 36-37

Tyralla, D; Seefeld, T

Spatially resolved temperature field measurement in powder bed fusion for online detection of porosity

Quelle: Proc. of Lasers in Manufacturing Conference 2023 (LiM 2023). German Scientific Laser Society/Wissenschaftliche Gesellschaft Lasertechnik e.V. (WLT e.V.) (2023)

Valentino, T; Stephen, A; Radel, T; Vollertsen, F

Applicability of a laser pre-treatment for a robust subsequent bending of thin sheet metal

Quelle: CIRP Journal of Manufacturing Science and Technology 44 (2023) 45-54 

Warneke, P; Bohlen, A; Seefeld, T

Influence of the process speed in laser melt injection for reinforcing skin-pass rolls

Quelle: Journal of Laser Applications 35 (2023) 012009-1-89, doi: 10.2351/7.0000781 (online)

Warneke, P; Hildinger, P; Bohlen, A; Seefeld, T

Reinforcing cold working steel by high-speed laser melt injection

Quelle: Proc. of Lasers in Manufacturing Conference 2023 (LiM 2023). German Scientific Laser Society/Wissenschaftliche Gesellschaft Lasertechnik e.V. (WLT e.V.) (2023)

Zhang, X; Kornmeier, J; Hofmann, M; Langebeck, A; Alameddin, S; Alesso, R P; Fritzen, F; Bunn, J, Cabeza, S

Residual stresses in Cu matrix composite surface deposits after laser melt injection

Quelle: Strain (2023) doi.org/10.1111/str.12457

BOOKS

Eckert, S

Laser-Induced Thermochemical Polishing of Metals

Quelle: Strahltechnik Bd. 75, Hrsg. F. Vollertsen, R. Bergmann. BIAS Verlag Bremen (2022)

Seefeld, T; Radel, T; Mattulat, T (Eds.)

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum

Strahltechnik Band 76. BIAS Verlag Bremen (2022) online

PATENTS

Bergmann, R B; Szczesny, M

System und Verfahren zur Bestimmung einer Schweiss- oder Lötgeschwindigkeit

Quelle: EP 3 663 030 B1 (2022)

Woizeschke, P; Schultz, V

Verfahren zum Verformen von Material mittels Laserstrahl

Quelle: Patentschrift DE 10 2017 119 508 B4 (2022)

PUBLICATIONS

Agour, M; Falldorf, C; Taleb, F; Castro-Camus, E; Koch, M; Bergmann, R B

Terahertz refernceless wavefront sensing by means of computational shear-interferometry

Quelle: Optics Express 30, 5 (2022) 7068-7081

Agour, M; Falldorf, C; Taleb, F; Castro-Camus, E; Koch, M; Bergmann, R B

Characterization of terahertz wavefront aberrations using computational shear-interferometry

Quelle: Optical Engineering 61, 11 (2022) 114102-1-11

Agour, M; Falldorf, C; Taleb, F; Koch, M; Bergmann, R B;  Castro-Camus, E

Chocolate inspection by means of phase-contrast imaging using multiple-plane terahertz phase retrieval

Quelle: Optics Letters 47, 13 (2022) 3283-3286

Agour, M; Falldorf, C; Taleb, F; Castro-Camus, E; Koch, M; Bergmann, R B

Shear interferometry for terahertz wavefront sensing

Quelle: Proc. SPIE Photonics Europe 2022, Strasbourg/France. SPIE Terahertz Photonics II (2022) 12134 (doi:10.1117/12.2621696)

Bartsch, J; Müller, S; Mattulat, T; Woizeschke, P; Bergmann, R B

Hochpräzises, dimensionelles Erfassen des schichtweisen Lagenaufbaus beim selektiven Laserstrahlschmelzen mittels Streifenprojektion

Quelle: DVS CONGRESS - Große Schweißtechnische Tagung. DVS Berichte Bd. 382. DVS Media GmbH, Düsseldorf (2022) 721-729

Bergmann, R B

Optische In‐Prozess‐Messung: Konzepte für präzise, schnelle und robuste optische Messtechnik für komplexe Messsituationen

Quelle: DVS-Berichte 384. DVS Media GmbH, Düsseldorf (2022) 10 (Kurzfassung) ISBN 978-3-96144-208-9)

Bergmann, R B; Fischer, A; Bockelmann, C; Dekorsy, A; Garcia-Ortiz, A; Falldorf, C

The coherence function and its information content for optical metrology

Quelle: tm – Technisches Messen 89, 6 (2022) 397-412

Bohlen, A; Seefeld, T; Haghshenas, A; Groll, R

Characterization of the powder stream propagation behavior of a discrete coaxial nozzle for Laser Metal Deposition

Quelle: Journal of Laser Applications 34 (2022) 42048. DOI: 10.2351/7.0000775 (online)

Bohlen, A; Tyralla, D; Seefeld, T

Influence of powder feed parameters on the powder stream in laser metal deposition (LMD) by high-speed and high-resolution imaging

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum. Eds. T. Seefeld, T. Radel, T. Mattulat. Strahltechnik Band 76, BIAS Verlag Bremen (2022) 1-6 (online)

Falldorf, C

Exploring the coherence function for optical metrology and beyond

Quelle: Proc. SPIE Vol. 12137. SPIE Digital Library (2022) 1213709-1-9, doi: 10.1117/12.2624481

Falldorf, C; Rukin, I; Müller A F; Kroker, S; Bergmann, R B

Functional pixels: a pathway towards true holographic displays using today’s display technology

Quelle: Optics Express 30, 26 (2022) 47528, doi.org/10.1364/OE.474589

Faue, P; Beste, L-H; Richter, B; Agrawal, A; Klingbeil, K; Thoma, D; Radel, T, Pfefferkorn, F.E

Influence of laser polishing on fatigue life of conventionally machined and laser powder bed fusion 316L stainless steel

Quelle: Manufacturing Letters 33 (2022) 670-677

Fischer, A; Bergmann, R B

Multidimensionale optische Messtechnik

Quelle: TM– Technisches Messen 89, 6 (2022) 395-396

Haghshenas, A; Bohlen, A; Tyralla, D; Groll, R

The relevance of wall roughness modeling for simulation of powder flows in laser metal deposition nozzles

Quelle: The International Journal of Advanced Manufacturing Technology 123 (2022) 1441-1458 (online)

Halisch, C; Milcke, B, Radel, T; Rentsch, R; Seefeld, T

Influence of oxygen content in the shielding gas chamber on mechanical properties and macroscopic structure of Ti-6Al-4V during wire arc additive manufacturing

Quelle: Int J Adv Manuf Technol 124 (2023) 1065–1076 (doi.org/10.1007/s00170-022-10214-2)

Hellenbrand, G, Lenz, B; Stephen, A; Radel, T; Mevissen, D; Brecher, C

Manufacturing of Crowned Spline-Joints with Optimized Surface Treatments for Aerospace Applications

Quelle: MIC Procedia (2022) 059-065

Henze, I; Mattulat, T; Woizeschke, P

Möglichkeit zur experimentellen Untersuchung des Einflusses von Metalldampf auf einen WIG-Lichtbogen

Quelle: Schweißen und Schneiden 74, 1-2 (2022) 48-49

Henze, I; Pordzik, R; Marben, P; Mattulat, T

Industrial applicability of reflection-assisted laser beam brazing of ZM-coated steel

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum (LAF’22), eds. T. Seefeld, T. Radel, T. Mattulat. Strahltechnik Band 76, BIAS-Verlag Bremen (2022) 52-57 (online)

Henze, I, Woizeschke, P

Influence of the composition of separately laser‑generated metal vapor on arc stability

Quelle: The International Journal of Advanced Manufacturing Technology (2022) https://doi.org/10.1007/s00170-022-10708-z (online)

Karpuschewski; B; Kinner-Becker, T; Klink, A; Langenhorst, L; Mayer, J; Meyer, D; Radel, T; Reese, S; Sölter, J

Process Signatures – Knowledge-based approach towards function-oriented manufacturing

Quelle: Proc. of the 6th CIRP Conference on Surface Integrity. Procedia CIRP 108 (2022) 624-629

Krause, C; Bergmann, R B; Falldorf, C

Statistical analysis of phase values for the determination of step heights in multi-wavelength interferometry

Quelle: tm – Technisches Messen 89, 6 (2022) 430–437

Langebeck, A; Bohlen, A

515 nm wavelength laser for laser melt injection of high-quality MMC in Cu-ETP

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum, eds. T. Seefeld, T. Radel, T. Mattulat, T. Strahltechnik Band 76, BIAS Verlag Bremen (2022), 11-14 (online)

Langebeck, A; Bohlen, A; Seefeld, T; Zhang, X, Rebelo Kornmeier, J; Hofmann, M; Alameddin, S; Alessio, R P; Fritzen, F

Laser melt injection of spherical fused tungsten carbide in Cu-ETP with 515 nm wavelength laser

Quelle: Proc. of the 12th CIRP Conference on Photonic Technologies (LANE 2022), eds.: M. Schmidt, F. Vollertsen, B.M. Colosimo. Procedia CIRP 111, Elsevier B.V. Amsterdam (2022) 726-731 (online)

Langebeck, A; Jahnke, C; Wünderlich, T; Hein, C; Bohlen, A; Uhlmann, E

Wolframschmelzcarbid-basierte MMC-Schichten für den industriellen Einsatz im Formenbau

Quelle: Schweißen und Schneiden 74, 1-2 (2022) 32-38

Lu, Y; Radel, T

Tensile strength of Nitinol flanges fabricated by laser rod end melting and immediate flange processing

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum (LAF’22), eds. T. Seefeld, T. Radel, T. Mattulat. Strahltechnik Band 76, BIAS-Verlag Bremen (2022) 18-22 (online)

Lu, Y; Radel, T

Tensile strength of Nitinol flanges produced by laser rod end melting and immediate flange processing in a not fully solidified state

Quelle: Proc. of the 12th CIRP Conference on Photonic Technologies (LANE 2022), eds.: M. Schmidt, F. Vollertsen, B.M. Colosimo. Procedia CIRP 111, Elsevier B.V. Amsterdam (2022) 726-731 (online)

Möbus, M; Woizeschke, P

Keyhole‑in‑keyhole formation by adding a coaxially superimposed single‑mode laser beam in disk laser deep penetration welding

Quelle: Welding in the World (2023) doi.org/10.1007/s40194-023-01484-9

Möbus, M; Woizeschke, P; Mattulat, T

Prevention of coating-induced agglomerations within the weld seam during laser beam deep penetration welding of aluminium-silicon coated press-hardenened steel

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum (LAF’22), eds. T. Seefeld, T. Radel, T. Mattulat. Strahltechnik Band 76, BIAS-Verlag Bremen (2022) 47-51 (online)

Müller, A F; Falldorf, C; Agour, M; Lotzgeselle, M; Straub, A; Ehret, G; Bergmann, R B

Measurement of independent wave fields using Estimation of Signal Parameters via Rotational Invariance Techniques (ESPRIT) for aspheric and freeform surfaces

Quelle: 25th Congress of the International Commission for Optics (ICO) and 16th Conference of International Society on Optics Within Life Sciences (OWLS), Dresden

Müller, A F; Falldorf, C; Bergmann, R B

Approaching optical metrology with multiple light sources and compressive sensing

Quelle: Proc. of SPIE Photonics Europe 2022, Strasbourg/France. Optics and Photonics for Advanced Dimensional Metrology II (2022) 121370L (doi: 10.1117/12.2621647)

Müller, S; Mattulat, T; Woizeschke, P

Hybrid additive manufacturing with titanium powder and aluminum substrates via laser powder bed fusion

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum (LAF’22), eds. T. Seefeld, T. Radel, T. Mattulat. Strahltechnik Band 76, BIAS-Verlag Bremen (2022) 41-46 (online)

Pordzik, R; Mattulat, T

Introducing an algorithm for the automatic detection of interface posi-tions for flange joints based on laser triangulation measurements

Quelle: Proceedings of the 12th Laser Applications Forum (LAF’22), eds. T. Seefeld, T. Radel, T. Mattulat. Strahltechnik Band 76, BIAS-Verlag Bremen (2022) 58-64

Pordzik, R; Mattulat, T; Woizeschke, P

Effects of reduced ambient pressure on the OCT-based weld depth measurement signal in laser welding of aluminum and steel

Quelle: Proc. of the 12th CIRP Conference on Photonic Technologies (LANE 2022), eds.: M. Schmidt, F. Vollertsen, B.M. Colosimo. Procedia CIRP 111, Elsevier B.V. Amsterdam (2022) 541-546 (online)

Radel, T; Seefeld, T; Bohlen, A; Stephen, A; Mattulat, T

Robuste Laserprozesse im Kontext der Energiewende

Quelle: Schweißen und Schneiden 74, 10 (2022) 690-692

Rathmann, L; Beste, L-H; Faue, P; Richter, B; Klingbeil, K; Pfefferkorn, F. E; Radel, T

Macro-pore free sub-surface PBF-LB/M components through laser polishing

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum (LAF’22), eds. T. Seefeld, T. Radel, T. Mattulat. Strahltechnik Band 76, BIAS Verlag Bremen (2022) 37-40 (online)

Rathmann, L; Hasselbruch, H; Mehner, A; Radel, T

On the combination of plasma nitrided surfaces and LIPSS

Quelle: Proceedings of the 12th Laser Applications Forum (LAF’22), eds. T. Seefeld, T. Radel, T. Mattulat. Strahltechnik Band 76, BIAS-Verlag Bremen (2022) 23-27

Rathmann, L; Radel, T

On the use of LIPSS in single- and multi-scale laser-structured tool surfaces under lubricated conditions

Quelle: Journal of Manufacturing Processes 77 (2022) 819-830 (online)

Rathmann, L; Rusche, T; Hasselbruch, H; Mehner, A, Radel, T

Friction and wear characterization of LIPSS and TiN/DLC variants

Quelle: Applied Surface Science 584 (2022) 152654 (online)

Richter, B; Radel, T; Pfefferkorn, F. E 

Sensitivity of surface roughness to laser parameters used for polishing additively manufactured Co-Cr alloy

Quelle: Surface and Coatings Technology 451 (2022), 128872 (doi.org/10.1016/j.surfcoat.2022.128872)

Simons, M; Radel, T

Influence of electrolyte concentration on laser chemical machining

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum (LAF’22), eds. T. Seefeld, T. Radel, T. Mattulat. Strahltechnik Band 76, BIAS Verlag Bremen (2022) 32-35 (online)

Simons, M; Radel, T

Laser chemical machining with additive-increased electrolyte viscosity

Quelle: Proc. of the 23. International Symposium on Laser Precision Microfabrication (LPM 2022), Dresden (online)

Sperling, Y; Bartsch, J; Gauchan, S; Bergmann, R B

Extending vision ray calibration by determination of focus distances

Quelle: Optics Express 30, 26 (2022) 47801, doi.org/10.1364/OE.475420

Stephen, A; Lenz, B; Hellenbrand, G

Laser micro structuring of multi-layer coatings on aircraft splines for optimization of the surface properties

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum (LAF’22), eds. T. Seefeld, T. Radel, T. Mattulat. Strahltechnik Band 76, BIAS-Verlag Bremen (2022) 28-31 (online)

Stephen, A; Tyralla, D; Radel, T; Vollertsen, F

Bohrzeiten beim Laserbohren von Saugflächen

Quelle: VDI-Z 164, 3 (2022) 40-42

Valentino, T; Jägle, E; Radel, T

Materials Characterization at High Strain Rates

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum (LAF’22), eds. T. Seefeld, T. Radel, T. Mattulat. Strahltechnik Band 76, BIAS Verlag Bremen (2022) 15-17 (online)

Valentino, T; Radel, T

Identification of Characteristic Values in Impulse‑Based Processes Using Small Specimens

Quelle: Nanomanufacturing and Metrology (2022) https://doi.org/10.1007/s41871-022-00142-w

Warneke, P; Bohlen, A; Seefeld, T

Improving the wear resistance of copper tools for pressure die casting by laser melt injection

Quelle: Production Engineering (2022) https://doi.org/10.1007/s11740-022-01164-5 (online)

Warneke, P; Hildinger, P; Bohlen, A; Seefeld, T

High-speed laser melt injection for wear protection of skin-pass rolls

Quelle: LAF 2022: Proceedings of the 12th Laser Applications Forum, Eds. T. Seefeld, T. Radel; T Mattulat. Strahltechnik Band 76, BIAS Verlag Bremen (2022) 7-10 (online)

Warneke, P; Langebeck, A; Bohlen, A; Seefeld, T

Laser melt injection for wear protection of molds and casting tools

Quelle: The mold & die journal 10, 1 (2022) 32-35