Background to the Topics Concerned in the Present Papers

Autor: Pentti Kettunen

Publikováno v: Materials Science Forum. 599:1-78

The present background description concentrates on the structure of wood xylem, on the mechanical strength properties under monotonic external loading, on the degradation of the structure of wood and somewhat also on the influence of thermal treatmen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dcbf1a8ff63841126a2d1948d18d4cce
https://doi.org/10.4028/www.scientific.net/msf.599.1

Statistical models for cyclic strain hardening of copper single crystals

Autor: H. Martikka, Pentti Kettunen

Publikováno v: Materials Science and Engineering: A. :193-197

Models based on testing of copper single crystals and on the statistical theories of flow and cyclic work hardening are developed to explain the measurements of plastic strain amplitude as a function of acting shear stress amplitude, flow strength an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2ff88bba05f035b080ad45acceccf9d8
https://doi.org/10.1016/s0921-5093(97)00156-1

Dislocation arrangements in α-iron loaded cyclically in a constant magnetic field

Autor: Pekka Ruuskanen, Pentti Kettunen

Publikováno v: Materials Science and Engineering: A. 159:167-171

The effect of a constant magnetic field on the dislocation arrangements formed during the cyclic stressing of polycrystalline iron was investigated. The test specimens were cyclically loaded in demagnetized state in a magnetic field of 1.5 kA m−1.

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https://doi.org/10.1016/0921-5093(92)90285-9

Effect of cyclic straining of the harmonic amplitude spectrum of magnetoelastically generated voltage uB

Autor: Pekka Ruuskanen, Pentti Kettunen

Publikováno v: Ruuskanen, P & Kettunen, P 1991, ' Effect of cyclic straining of the harmonic amplitude spectrum of magnetoelastically generated voltage u B ', Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, vol. 142, no. 1, pp. 125-133 . https://doi.org/10.1016/0921-5093(91)90761-B

The amplitude spectrum of the magnetoelastically induced voltage uB was studied during cyclic stressing of polycrystalline iron and nickel. Test specimens were loaded with a sinusoidically varying stress with a frequency of 25 Hz. The amplitude spect

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https://cris.vtt.fi/en/publications/1a47e8b3-f5cd-47a2-9f36-5b6a547cb1a6

Dependence of the high-frequency components of the magnetoelastic voltage on plastic deformation and stress amplitude during stepwise cyclic stressing of ferromagnetic material

Autor: Pentti Kettunen, Pekka Ruuskanen

Publikováno v: Ruuskanen, P & Kettunen, P 1993, ' Dependence of the high-frequency components of the magnetoelastic voltage on plastic deformation and stress amplitude during stepwise cyclic stressing of ferromagnetic material ', Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties, vol. 68, no. 6, pp. 1233-1249 . https://doi.org/10.1080/01418619308222929

The high-frequency components F H of the magnetoelastic voltage u B induced during cyclic stressing of ferromagnetic material has been investigated. The true root mean square value B M of the high-frequency components was measured as a function of st

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a303bb5681e40dc598bb6c52094786ac
https://cris.vtt.fi/en/publications/e31d0379-623e-4871-a87f-d47c2c277312