191 research outputs found
Analysis of crack growth in 3D printed plastic wrench
This research has been supported by Polymer Competence Center Leoben GmbH (PCCL, Austria) and the Ministry of Education, Youth and Sports of the Czech Republic under the project m- IPMinfra (CZ.02.1.01/0.0/0.0/16_013/0001823) and the equipment and the base of research infrastructure IPMinfra were used during the research activities.Fused filament fabrication (FFF) is a type of extrusion-based additive manufacturing
technique also known as fused deposition modeling (FDM) or 3D-printing. It is possible to use the process of additive manufacturing for manufacturing of prototypes and also the final products. It is widely believed that parts produced by this method have the disadvantage of slightly worse mechanical properties because of consisting of many weld-lines in layers. However, newer studies confirm that this negative effect can be significantly reduced by appropriate choice of welding conditions of the printing process [3]. Mechanical properties like ultimate tensile strength, modulus, etc. of printed parts can then be similar to properties of injection molded or compressed parts
Tracing Electron-Ion Recombination in Nanoplasmas Produced by Extreme- Ultraviolet Irradiation of Rare-Gas Clusters
We investigate electron-ion recombination in nanoplasmas produced by the
ionization of rare-gas clusters with intense femtosecond extreme-ultraviolet
(XUV) pulses. The relaxation dynamics following XUV irradiation is studied
using time-delayed 790-nm pulses, revealing the generation of a large number
of excited atoms resulting from electron-ion recombination. In medium-sized
Ar-Xe clusters, these atoms are preferentially created in the Xe core within
10 ps after the cluster ionization. The ionization of excited atoms serves as
a sensitive probe for monitoring the cluster expansion dynamics up to the ns
time scale
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