Author

Jan Grajczak

Observed name: J. Grajczak

Observed institution: Laser Zentrum Hannover

ORCID: 0000-0001-6982-0734

Observed ORCID: 0000-0001-6982-0734

OpenAlex ID: A5012000299

Influence of the ultrasonic vibration amplitude on the melt pool dynamics and the weld shape of laser beam welded EN AW-6082 utilizing a new excitation system for laser beam welding

2021 · H. Ohrdes, S. Nothdurft, et al. · Production Engineering · 27

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Deep Learning-Based Weld Contour and Defect Detection from Micrographs of Laser Beam Welded Semi-Finished Products

2022 · Christian Nowroth, Tiansheng Gu, et al. · Applied Sciences · 23

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Influence of Ultrasound on Pore and Crack Formation in Laser Beam Welding of Nickel-Base Alloy Round Bars

2020 · Jan Grajczak, Christian Nowroth, et al. · Metals · 9

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Feasibility study for the manufacturing of hybrid pinion shafts with the cross-wedge rolling process

2023 · Paulina Merkel, Laura Budde, et al. · International Journal of Material Forming · 7

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Influence of process-related heat accumulation of laser beam welded 1.7035 round bars on weld pool shape and weld defects

2021 · J. Grajczak, C. Nowroth, et al. · Journal of Laser Applications · 7

Feasibility study on multifrequency excitation of the melt pool during ultrasonic-assisted laser beam welding

2023 · Christian Nowroth, Jan Grajczak, et al. · Ultrasonics · 6

Temporal power modulation in high power laser beam welding of round bars

2024 · J. Grajczak, C. Nowroth, et al. · Procedia CIRP · 3

Investigations on the effect of standing ultrasonic waves on the microstructure and hardness of laser beam welded butt joints of stainless steel and nickel base alloy

2022 · Jan Grajczak, Christian Nowroth, et al. · Journal of Laser Applications · 3

Investigations on the Specifics of Laser Power Modulation in Laser Beam Welding of Round Bars

2022 · J. Grajczak, C. Nowroth, et al. · Lasers in Manufacturing and Materials Processing · 3

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Investigations on the effect of post treatment utilizing ultrasonic standing waves on the hardness of laser beam welds in stainless steel

2022 · J. Grajczak, C. Nowroth, et al. · Procedia CIRP · 1

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Investigations on pulsed laser beam welding of thin steel sheets in lap configuration over the face side/parallel joint

2020 · J. Grajczak, S. Nothdurft, et al. · Procedia CIRP · 1

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Vibration shape tuning for selective vibration node shifting in a multimodal longitudinal ultrasonic system

2026 · Christian Nowroth, Takeshi Morita, et al. · Ultrasonics

Ultrasound-Assisted Laser Beam Welding

2026 · Sarah Seffer, Mark de Vries, et al. · CRC Press eBooks

Hollow Forward Extrusion of Hybrid Components Made of Stainless Steel and Nickel-Based Alloy

2026 · Armin Piwek, Mark de Vries, et al. · Forschungsdaten-Repositorium der LUH

Vibration shape tuning for selective vibration node shifting in multimodal ultrasonic systems

2026 · Christian Nowroth, Takeshi Morita, et al. · SSRN Electronic Journal

Mechanisms of Increasing Weld Depth during Temporal Power Modulation in High‐Power Laser Beam Welding

2024 · Jan Grajczak, David Reynders, et al. · Advanced Engineering Materials

Works count: 16

Citation count: 90

H-index: 6

I10-index: 2