Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Mikael Malmström"'
Autor:
Arno Volker, Mikael Malmström, Anton Jansson, Bevis Hutchinson, Johan Lönnqvist, Hans Sollander, Frenk Van Den Berg
Publikováno v:
Research and Review Journal of Nondestructive Testing, Vol 1, Iss 1 (2023)
The aim of this work is to acquire material data at elevated temperatures for different chemical compositions and phases as basis for numerical simulations incorporating the effect of crystalline texture. Several samples; AISI 304, interstitially fre
Externí odkaz:
https://doaj.org/article/320e58a72c5c478aac70334b8c6c9ab4
Autor:
Frenk Van Den Berg, Maxim Aarnts, Haibing Yang, F Fintelman, Bernard Ennis, L Gillgren, Denis Jorge-Badiola, Ane Martinez-de-Guerenu, Claire Davis, Graeme West, Lei Zhou, Mohsen Jolfaei, Anthony J Peyton, John W. Wilson, Arno Volker, Q Marina, Arno Duijster, Mikael Malmström, Anton Jansson, Bevis Hutchinson, Claudio Mocci, M. Vannucci, Valentina Colla, Christophe Reboud, Anastassios Skarlatos, Roberto Miorelli, Patrick Lombard, Olivier Hubert, Julien Taurines, I Lobanova, S Despréaux, Stéphane Labbé, Carola Celada-Casero
Publikováno v:
Research and Review Journal of Nondestructive Testing, Vol 1, Iss 1 (2023)
Weight savings in mobility and transport are mandatory in order to reduce CO 2 emissions and energy consumption. The steel industry offers weight saving solutions by a growing portfolio of Advanced High Strength Steel (AHSS) products. AHSS owe their
Externí odkaz:
https://doaj.org/article/2894484eb1974c438b991b28fce577ac
Autor:
Tuomo Nyyssönen, Mikael Malmström, David Lindell, Anton Jansson, Johan Lönnqvist, Linda Bäcke, Bevis Hutchinson
Publikováno v:
Applied Sciences, Vol 13, Iss 6, p 3901 (2023)
In this study, we demonstrate the significance of austenite annealing twin boundaries when calibrating laser ultrasonic measurements for gauging austenite grain size in situ during the thermomechanical processing of high-strength low-alloy steels. Si
Externí odkaz:
https://doaj.org/article/becf1fcc9d8f46c3af23a784947a3ee1
Publikováno v:
Applied Sciences, Vol 12, Iss 20, p 10547 (2022)
Various approaches are reviewed for determining elastic anisotropy and its coupling to crystallographic texture, with special reference to ultrasonic measurements. Two new methods are described for measuring the anisotropy of P-wave velocity using la
Externí odkaz:
https://doaj.org/article/b11086e1a3cf4f42bc8035c86df7add9
Autor:
Mikael Malmström, Anton Jansson, Bevis Hutchinson, Johan Lönnqvist, Lars Gillgren, Linda Bäcke, Hans Sollander, Matthias Bärwald, Sascha Hochhard, Peter Lundin
Publikováno v:
Applied Sciences, Vol 12, Iss 19, p 10048 (2022)
The paper summarizes the creation of a robust online grain size gauge for a hot strip mill. A method and algorithm for calculating the grain size from the measured ultrasonic attenuation is presented. This new method is self-calibrating, does not rel
Externí odkaz:
https://doaj.org/article/167afd681edf4caca80d6ae31cb4b894
Autor:
Bevis Hutchinson, Hossein Ehteshami, Pete Bate, Mikael Malmström, Pavel A. Korzhavyi, Johan Lönnqvist
Publikováno v:
Ultrasonics. 87:44-47
High temperature crystal elasticity constants for face centred cubic austenite are important for interpreting the ultrasonic properties of iron and steels but cannot be determined by normal single crystal methods. Values of these constants have recen
Publikováno v:
IEEE Photonics Technology Letters. 28:829-832
We demonstrate the addition of time gating to a standard optical spectrum analyzer (OSA) operating in the spectral region similar to 1.06 mu m. This is accomplished by opening for 7 ns the optical input to the OSA with an electrically driven poled fi
Publikováno v:
Scopus-Elsevier
We present a numerical method for studying fiber-based ultra-short pulse amplification at high repetition rates. Validation of the simulations, by comparison with experimental results, are also presented. QC 20160712
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b26f890179d1bc3a1cdf7eb79bde45c2
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188881
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188881
Two designs of diamond quarter-wave plates for CO2 lasers, based on the birefringence of sub-wavelength gratings, were manufactured and tested. In one design the grating was etched on the surface of a 300 µm thick polycrystalline diamond substrate.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5927a3bf1ea9e913f64c5a73c7e12de3
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-283037
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-283037
Publikováno v:
Workshop on Specialty Optical Fibers and Their Applications.
A tunable single-wavelength Erbium-doped all-fiber laser was experimentally demonstrated. The tuning is obtained with a stress-optic phase modulator based on a twin-hole fiber and a chirped fiber Bragg grating in a medium birefringence fiber.