Results 71 to 80 of about 3,061,892 (250)

Beam shaping system for laser-induced crystal growth

, 2023
We report on the development and setup of a beam shaping system for the Laser-Diode-Floating-Zone (LDFZ) crystal growth, a crucible-free technique used for growing high-purity crystals.
Hans-Dieter Hoffmann, Thomas Westphalen, Westphalen, Thomas, Hoffmann, Hans-Dieter, Florian Rackerseder, Ito, Toshimitsu, Rackerseder, Florian, Martin Traub, Traub, Martin, Toshimitsu Ito   +9 more
core   +1 more source

3D‐Printed Titanium Gyroid Scaffold Structure Integrated With Tough Hybrid Materials for Cartilage Replacement

Advanced Engineering Materials, EarlyView.
This study proposes a potential device design for joint cartilage replacement. Silica‐polytetrahydrofuran (SiO2‐PolyTHF) hybrids with customizable mechanical properties were developed to mimic the characteristics of a natural meniscus. These were synthesized through a two‐pot sol–gel hybrid process.
Yu‐Chien Lin, Gloria R. Young, Francesca Tallia, Reece N. Oosterbeek, Shaaz Ghouse, Edward Spiers, Nupur Kohli, Tom Briggs, Marc Masen, Siwei Li, Ren‐Jei Chung, Jonathan R. T. Jeffers, Julian R. Jones   +12 more
wiley   +1 more source

Optimal Design and Analysis of Wide-Band Near-Infrared Hybrid Dielectric Gratings with High Transmission Efficiency

Micromachines
Since surface relief transmission gratings have very strict requirements on operators and use environment, according to the semiconductor laser external cavity spectral beam combining system, this paper proposes a design scheme for a semiconductor laser ...
Ye Wang, Yongyi Chen, Li Qin, Lijun Wang
doaj   +1 more source

Impact of the Process Atmosphere During Hot Isostatic Pressing on the Near‐Surface Composition of an Additively Manufactured Austenitic High‐Interstitial Steel

Advanced Engineering Materials, EarlyView.
A high interstital austenitic steel is additively manufactured and postdensified by HIP to eliminate gas porosity. Thereby, the loss of N and Mn in Ar HIP atmosphere is investigated. Further, HIP using N2 atmosphere is investigated which led to excessive nitride formation.
F. Großwendt, J. Hahn, J. Kimm, S. Weber, J. Lentz   +4 more
wiley   +1 more source

Measurement of laser absorptivity for operating parameters characteristic of laser drilling regime [PDF]

, 2008
Publisher version : http://iopscience.iop.org/0022-3727/41/15/155502/Laser drilling in the percussion regime is commonly used in the aircraft industry to drill sub-millimetre holes in metallic targets.
SCHNEIDER, Matthieu, BERTHE, Laurent, FABBRO, Rémy, MULLER, Maryse   +3 more
core   +1 more source

Mitigating Creep Anisotropy and Enhancing Performance in Additively Manufactured Ni‐Based Superalloys: A Review

Advanced Engineering Materials, EarlyView.
Additive manufacturing introduces pronounced microstructural and crystallographic anisotropy in Ni‐based superalloys, resulting in orientation‐dependent creep deformation and damage. This review identifies the key microstructural origins of creep anisotropy, examines their influence on dominant deformation mechanisms, and highlights processing ...
Chandan Kumar, Shobhit Pratap Singh, Gaurav Mohanty, Praveen Kumar   +3 more
wiley   +1 more source

Electrodeposition in Structural Lattices of Variable Architectures

Advanced Engineering Materials, EarlyView.
Electrodeposition enables geometry‐sensitive, autonomous void filling while simultaneously tuning chemical and mechanical properties. The development of approaches that can autonomously fill and heal material voids and yield composites with tailorable properties is increasingly relevant in engineering.
Yeong‐Man Kwon, Jingwen Zhang, Guido Musso, Alessandro F. Rotta Loria   +3 more
wiley   +1 more source

High-Power Laser Coherent Beam Combination Through Self-Imaging in Plasma Waveguides

Applied Sciences
A novel approach for laser coherent beam combination (CBC) utilizing the self-imaging effect in plasma waveguides is presented in this study, which enables the transmission of ultrashort laser pulses at intensities above the bulk damage threshold of ...
Yixuan Huang, Haitao Zhang, Zhuoyi Yang, Yanwei Wang, Yihang Huang, Xiaozheng Liu, Junyu Chen   +6 more
doaj   +1 more source

Microstructure‑Dependent Phase Transformations Under High‑Pressure Laser Heating in Additively Manufactured AlCrFe2Ni2

Advanced Engineering Materials, EarlyView.
Additively manufactured AlCrFe2Ni2 with contrasting BCC/B2‐dominant and lamellar FCC + BCC/B2 microstructures exhibits the same pressure‐induced BCC/B2 → HCP transformation. Under laser heating at high pressure, HCP is destabilized, and a cubic BCC/B2 + FCC assemblage is recovered, while the lower‐scan‐speed microstructure transforms at a lower ...
Raimundas Sereika, Hunter Kantelis, Yogesh K. Vohra, Shengbiao Zhang, Wuxian Yang, Wen Chen   +5 more
wiley   +1 more source

Impact of Beam Shape and Frequency on Weld Seam Geometry and Penetration Depth Using a Coherent Beam Combining Laser

Applied Sciences
The geometry and quality of a weld seam are critical factors in laser beam welding, influencing mechanical performance and structural integrity. Dynamically modulated laser beams provide a precise means of tailoring energy input in high-power laser ...
Karthik Ravi Krishna Murthy, Reza Sanei, Abhay Sharma, Simon Olschok, Uwe Reisgen   +4 more
doaj   +1 more source