National Repository of Grey Literature 62 records found  previous11 - 20nextend  jump to record: Search took 0.01 seconds. 
Elastické vlastnosti dvojčatové martenzitické struktury určované metodou
Bicanová, Lucie ; Seiner, Hanuš ; Sedlák, Petr ; Landa, Michal ; Heller, Luděk
This paper presents a novel method for determination of all independent elastic coefficients of single variants of martensite from RUS measurements of finely twinned crystals.
Vyšetrovani elastickych vlastnosti hovězi kosti ze vzorku obecného tvaru
Goldmann, T. ; Seiner, Hanuš ; Landa, Michal
This work contributes to the methodology of an evaluation of elastic properties of cortical bones by ultrasonic wave inversion, whilst the bone is considered to be a linear elastic anisotropic continuum.
Advanced signal processing in composite material properties investigation
Blaháček, Michal ; Landa, Michal ; Zídek, Jan
Composite material parameters evaluation depends on our ability to simplify complex wave field. Fractional wave mode arrival usually evokes transient effects in the measured signal. In the paper new method of transient effects detection is discussed. The method is efficient tool for fractional wave mode detection and wave arrival time computation.
Laser-generated ultrasound in solids
Blaháček, Michal ; Zídek, Jan ; Landa, Michal ; Urbánek, Přemysl ; Bajgar, Vlastimil
To better understand ultrasonic wave propagation in thin-wall structures and to evaluate physical properties of the structure material, new method for ultrasonic wave generation are necessary. Optical technique using Nd:YAG pulse laser as the wave source is suitable method example. In the paper laser ultrasound technique is discussed and some important results of wavelet analysis are shown.
Determination of elastic moduli by the resonant ultrasound spectroscopy method
Kolman, Radek ; Plešek, Jiří ; Landa, Michal
An optimization method for the determination of elastic moduli by resonant ultrasound spectrocopy (RUS) was proposed. All components of the fourth-order tensor of elastic moduli for a general anisotropic material is determined from the knowledge of the resonance responce(spectrum) of the mechanical system. This spectrum is obtained from experimental measurements, using the RUS method on the prismatic specimen. For the iterative computation of elastic moduli an identification algorithm based on the direct iteration method is used. Spatial discretisation is performed by the finite element method.
Determination of elastic moduli of anisotropic solids from ultrasonic measurements
Seiner, H. ; Landa, Michal
This nondestructive, and partially noncontact method have a potential for material evalution of layered anisotropic structures.
Evaluation of anisotropic properties of composites using laser-generated ultrasound
Landa, Michal ; Blaháček, Michal ; Zídek, Jan
This nondestructive, and partially noncontact method have a potential for material evalution of layered anisotropic structures.
Acoustic emission during constant loading or constant deformation tests of AISI 304 stainless steel in 5N H2SO4 + 0.1 M NaCl
Landa, Michal ; Wevers, M.
In the constant deformation tests the active process is also general corrosion with active sides growing to the air.
Investigation of transformation processes in shape memory alloys based on monitoring acoustic emission activity
Landa, Michal ; Novák, Václav ; Blaháček, Michal ; Šittner, Petr
Stress induced martensitic transformation in Cu-based memory alloys were studied by AE methods. AE phenomena was used for nondestructive recognition of various transformation processes. Correlation of structural processes and accompanied AE activity in single crystals is shown.
Dynamic responses of plate and shell structures studied by nondestructive testing methods
Trnka, Jan ; Landa, Michal ; Dvořáková, Pavla
The advanced non-destructive testing of shell structures is conditioned to characterisation of guided waves propagating in a thin-wall solid. is very important from this point of view to know the response of these elements on different type of a loading. therefore the new powerful diagnostic methods are continouslz developed.

National Repository of Grey Literature : 62 records found   previous11 - 20nextend  jump to record:
See also: similar author names
1 Landa, M.
5 Landa, Martin
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