Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Magalas, L.B."'
Autor:
Magalas L.B.
Publikováno v:
Archives of Metallurgy and Materials, Vol 61, Iss 1, Pp 1-4 (2016)
The following is the text in memory of the late Andy Granato, professor in physics and materials science.
Externí odkaz:
https://doaj.org/article/1df1a07df00d4c0294f6b6c62ee23332
Publikováno v:
Archives of Metallurgy and Materials, Vol 61, Iss 1, Pp 21-24 (2016)
The diffusion mechanisms of lithium ions in tetragonal phase as well as in Al and Nb stabilized cubic Li7La3Zr2O12 compounds were investigated by low-frequency internal friction technique. In the cubic Li7La3Zr2O12 phase, a remarkable relaxation-type
Externí odkaz:
https://doaj.org/article/8680957c6c504b1c9286b9f4222468d5
Autor:
Magalas L.B.
Publikováno v:
Archives of Metallurgy and Materials, Vol 60, Iss 3, Pp 2069-2076 (2015)
Recent achievements in the development of low-frequency high-resolution mechanical spectroscopy (HRMS) are briefly reported. It is demonstrated that extremely low values of the loss angle, ϕ, (tanϕb = 1×10−5) can be measured as a function of fre
Externí odkaz:
https://doaj.org/article/1aa4a1337fd14b55870d3ddeed5cf4e3
Autor:
Magalas L.B., Majewski M.
Publikováno v:
Archives of Metallurgy and Materials, Vol 60, Iss 2, Pp 1091-1098 (2015)
In this work, we present a novel Hilbert-twin method to compute an envelope and the logarithmic decrement, δ, from exponentially damped time-invariant harmonic strain signals embedded in noise. The results obtained from five computing methods: (1) t
Externí odkaz:
https://doaj.org/article/7ff6344f6ecc4afca574b9b1ea574c70
Autor:
Majewski M., Magalas L.B.
Publikováno v:
Archives of Metallurgy and Materials, Vol 60, Iss 2, Pp 1105-1108 (2015)
The parametric OMI (Optimization in Multiple Intervals), the Yoshida-Magalas (YM) and a novel Hilbert-twin (H-twin) methods are advocated for computing the logarithmic decrement in the field of internal friction and mechanical spectroscopy of solids.
Externí odkaz:
https://doaj.org/article/eea036361cae4b5e81eb425675a875f3
Autor:
Majewski M., Magalas L.B.
Publikováno v:
Archives of Metallurgy and Materials, Vol 60, Iss 2, Pp 1099-1103 (2015)
A novel Hilbert-twin (H-twin) method is introduced as an alternative method for the computation of the resonant frequency for exponentially damped free decays embedded in noise. We also present the comparison among the following methods used to compu
Externí odkaz:
https://doaj.org/article/90203e99673b42d2a739123b321be376
Publikováno v:
Archives of Metallurgy and Materials, Vol 60, Iss 1, Pp 371-375 (2015)
The internal friction of magnesium single crystals, bicrystals and polycrystals has been studied between room temperature and 450°C. There is no internal friction peak in the single crystals, but a prominent relaxation peak appears at around 160°C
Externí odkaz:
https://doaj.org/article/2d7788c8df2d4263aaf36e79ebf07177
Autor:
Magalas L.B.
Publikováno v:
Archives of Metallurgy and Materials, Vol 61, Iss 1, Pp 7-8 (2016)
The following is the text of an oral presentation delivered at the Zener Medal Award ceremony in Hefei on 23 September 2015.
Externí odkaz:
https://doaj.org/article/85e5efdb84db43f3bce693cbae225510
Autor:
Magalas, L.B., Majewski, M.
Publikováno v:
In Materials Science & Engineering A 2009 521:384-388