Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Lasse Laurson"'
Autor:
Marcin Mińkowski, Lasse Laurson
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-19 (2023)
Abstract Deformation of crystalline materials is an interesting example of complex system behaviour. Small samples typically exhibit a stochastic-like, irregular response to externally applied stresses, manifested as significant sample-to-sample vari
Externí odkaz:
https://doaj.org/article/fd7683ba65f440c8a8a067226f816074
Autor:
Suvi Santa-aho, Mari Honkanen, Sami Kaappa, Lucio Azzari, Andrey Saren, Kari Ullakko, Lasse Laurson, Minnamari Vippola
Publikováno v:
Materials & Design, Vol 234, Iss , Pp 112308- (2023)
Two steels, ferrite and ferrite-pearlite were thoroughly characterized by a multi-instrumental microscopy techniques to get detailed information about their microstructure and magnetic structure. Microstructural features act as pinning sites for the
Externí odkaz:
https://doaj.org/article/4db6ea683915466e8af123fe9553e47a
Autor:
Sami Kaappa, Lasse Laurson
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p L022006 (2023)
Barkhausen noise in disordered ferromagnets is typically understood to originate primarily from jerky field-driven motion of domain walls. We study the magnetization reversal process in disordered permalloy thin films using micromagnetic simulations
Externí odkaz:
https://doaj.org/article/39a7262e00e7456e98af96a5677930df
Publikováno v:
Materials Theory, Vol 6, Iss 1, Pp 1-12 (2022)
Abstract In the Portevin–Le Chatelier (PLC) effect sample plastic deformation takes place via localized bands. We present a model to account for band dynamics and the variability the bands exhibit. The approach is tuned to account for strain harden
Externí odkaz:
https://doaj.org/article/eb6e2cc709d249fca8436c4fe773d37f
Publikováno v:
Materials Theory, Vol 6, Iss 1, Pp 1-3 (2022)
Externí odkaz:
https://doaj.org/article/644d6a08b3254b0981027b9453486a3c
Publikováno v:
Materials Theory, Vol 4, Iss 1, Pp 1-16 (2020)
Abstract Collective motion of dislocations is governed by the obstacles they encounter. In pure crystals, dislocations form complex structures as they become jammed by their anisotropic shear stress fields. On the other hand, introducing disorder to
Externí odkaz:
https://doaj.org/article/b185299ba7dc4b858d533e8e059fa9d9
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Predicting plastic deformation in crystals remains challenging owing to the nonlinear nature of stochastic avalanches involved, which resemble the critical phenomena. Salmenjoki et al. use machine learning to predict plastic deformation and show that
Externí odkaz:
https://doaj.org/article/f72865053338476bbf305c68bf624ddb
Publikováno v:
APL Materials, Vol 8, Iss 10, Pp 101109-101109-11 (2020)
We study a one-dimensional model of a dislocation pileup driven by an external stress and interacting with random quenched disorder, focusing on the predictability of the plastic deformation process. Upon quasistatically ramping up the externally app
Externí odkaz:
https://doaj.org/article/73ea7b246d304a6e925e1040608f837c
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-12 (2018)
Abstract Plastic deformation of crystalline materials is governed by the features of stress-driven motion of dislocations. In the case of irradiated steels subject to applied stresses, small dislocation loops as well as precipitates are known to inte
Externí odkaz:
https://doaj.org/article/ac0ca6f173614d4a9b7044440cba72ec
We present a new approach for modeling high-frequency losses in transverse anisotropy magnetic tapes by solving a 1-D eddy-current problem coupled to a micromagnetic constitutive law. Contrary to earlier models, the model is derived using a magnetic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f49b1cefdd83b61176b605b77ce6c30b
https://trepo.tuni.fi/handle/10024/146896
https://trepo.tuni.fi/handle/10024/146896
