Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Cemal Esen"'
Publikováno v:
Liquids, Vol 4, Iss 2, Pp 382-392 (2024)
In this article, the particle concentration of finely dispersed copper(II) oxide nanosuspensions as precursors for reductive laser sintering (RLS) is optimized on the basis of rheological investigations. For this metallization process, a smooth, homo
Externí odkaz:
https://doaj.org/article/707b5646811c4861b2f66536414dba6c
Publikováno v:
Nanomaterials, Vol 13, Iss 19, p 2693 (2023)
This contribution demonstrates and discusses the preparation of finely dispersed copper(II) oxide nanosuspensions as precursors for reductive laser sintering (RLS). Since the presence of agglomerates interferes with the various RLS sub-processes, fin
Externí odkaz:
https://doaj.org/article/739f1da72ef446cfaf368b5acb025f05
Publikováno v:
Micromachines, Vol 14, Iss 10, p 1838 (2023)
This article discusses the process of the laser turning of rotational symmetric, cylindrical components using ultrashort laser pulses with respect to the geometrical conditions and the resulting energy distribution during the laser turning process. A
Externí odkaz:
https://doaj.org/article/8f60e28fee9a4ad9907e3958e66c2833
Publikováno v:
Materials, Vol 16, Iss 17, p 5775 (2023)
We report on laser drilling borehole arrays using ultrashort pulsed lasers with a particular focus on reducing the inadvertent heat accumulation across the workpiece by optimizing the drilling sequence. For the optimization, evolutionary algorithms a
Externí odkaz:
https://doaj.org/article/b37431525803492b86684d36510bbb88
Publikováno v:
Materials, Vol 16, Iss 9, p 3556 (2023)
We report on a comprehensive study of the mechanical properties of maraging steel body-centred cubic lattice structures fabricated by a hybrid additive manufacturing technology that combines laser powder bed fusion with in situ high-speed milling. As
Externí odkaz:
https://doaj.org/article/f3706ec7601f499cbd49652ddee44115
Publikováno v:
Photonics, Vol 10, Iss 4, p 413 (2023)
We report on an optical setup to generate multi-Bessel beam profiles combining a refractive axicon and a spatial light modulator. Based on their particular beam profile, Bessel beams offer advantageous properties for micro drilling processes and inte
Externí odkaz:
https://doaj.org/article/92e509feab0141f5a2267ece46d61770
Publikováno v:
Applied Sciences, Vol 13, Iss 7, p 4557 (2023)
We report on a monitoring system based on a high-speed camera for fiber laser fusion cutting. The monitoring system is used without an external illumination retrofit on a conventional cutting head, with the optical path aligned coaxially to the incid
Externí odkaz:
https://doaj.org/article/aaa545703fe047c9b7262151d6b5e906
Autor:
Daniel Franz, Tom Häfner, Kay Bischoff, Jonas Helm, Tim Kunz, Stefan Rung, Cemal Esen, Ralf Hellmann
Publikováno v:
Materials Research Express, Vol 10, Iss 9, p 096301 (2023)
We report on a comprehensive study of laser percussion microvia drilling of Ajinomoto build-up film (ABF) material using an ultrashort pulsed laser in MHz burst mode. After laser processing, microvia drilling quality is being evaluated by the fabrica
Externí odkaz:
https://doaj.org/article/555ae34ffae04eeb95361811b1545e6a
Autor:
Mustafa Ayna, Johannes Spille, Yahya Açil, Jan-Tobias Weitkamp, Jörg Wiltfang, Cemal Esen, Aydin Gülses
Publikováno v:
Materials, Vol 15, Iss 22, p 7889 (2022)
The aim of the current experimental study was to comparatively assess the surface alterations in titanium and titanium-zirconium alloy implants in terms of thread pitch topography after irradiation with an Er:YAG laser, which is recommended in the li
Externí odkaz:
https://doaj.org/article/e9a10923b66148c7b58fe3088df608e9
Publikováno v:
Materials, Vol 15, Iss 18, p 6233 (2022)
Sapphire is a robust and wear-resistant material. However, efficient and high-quality micromachining is still a challenge. This contribution demonstrates and discusses two novels, previously unreported approaches for femtosecond laser-based micromach
Externí odkaz:
https://doaj.org/article/0b95b3b7090b4145acc5eca149c000f6