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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

Erscheint 4 Ausgaben pro Jahr

ISSN Druckformat: 1093-3611

ISSN Online: 1940-4360

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.4 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00005 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.07 SJR: 0.198 SNIP: 0.48 CiteScore™:: 1.1 H-Index: 20

Indexed in

PLASMA OSCILLATIONS DURING cw CO2 LASER WELDING

Volumen 5, Ausgabe 4, 2001, 4 pages
DOI: 10.1615/HighTempMatProc.v5.i4.60
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ABSTRAKT

Fluctuations of cold (~14 kK), dense (~1017 cm-3) plasma which burns above a metallic surface during welding with cw CO2 laser are registered in monochromatic radiation ~450 nm. They are connected with the pressure variations inside a keyhole which generate acoustic waves additionally measured with a microphone at the frequency range of 20-2ґ104 Hz. The power spectra densities (PSD) of the both signals and their coherence is studied in dependence on the welding conditions. In the case of welding of mild steel 1mm thick with laser power of 1.75 kW good conditions are characterized by peaks at the ~1.3 kHz and ~3.1 kHz in the PSD of both signals.

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