National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Stanovení mechanických vlastností dřeva v čerstvém stavu
Jakeš, Ondřej
This bachelor thesis deals with the determination of mechanical properties of wood in a fresh state. The object of the research was Acer platanoides. The mechanical properties were determined using the destructive method on the Zwick Z050. The primary objective was to determine the density, the modulus of elasticity, the modulus of rupture and also to determine the relationship between the individual variables. The secondary objective was to use the results obtained and to compare the density variability along the trunk and the density dependence on the cardinal point.
Analýza mechanických vlastností balzového dřeva na mesoúrovni pomocí zkušebního stroje iErudio
Grossová, Olga
This thesis analysis the mechanical properties of balsa wood mesolevel using the test machine iErudio. The thesis aim is to experimentally determine the mechanical properties of balsa wood (Ochroma lagopus). On the prototype minimachine iErudio is a set of measurements. Specifically, tensile and bending tests. Another objective is to determine the Poisson ratio on measured levels. These properties will be obtained from image data recorded device iErudio and calculated using the digital image correlation. Another objective is to evaluate the work done with the prototype device, point out the advantages and disadvantages. To analyse data using a commercial computer program VIC 3D and Mercury RT, which process the results using digital image correlation. The work has provided us with confirmation of mechanical characteristics of balsa and the suitability of using "minimachine" iErudio the performed tests.

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