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Filtry

17 (0,126s)

Výsledek výzkumu

The size effect on J-R curve for construction steels and its prediction by simplified mechanical model

Evaluation of mechanical properties from a small amount of test material is essential in a process of development of new alloys and monitoring of degradation and damage of in-service components. Miniaturization of test specimen together with a specim...

Audio engineering, reliability analysis

  • 2019
  • D
Výsledek výzkumu

Distinguishing between slip and twinning events during nanoindentation of magnesium alloy AZ31

Nanoindentation was performed in selected grain orientations close to [11-20] and [10-10] in magnesium alloy Mg–3Al–1Zn. The atomic force microscopy (AFM) and electron backscatter diffraction (EBSD) were used to examine the nanoindentation imprint. T...

JG - Hutnictví, kovové materiály

  • 2016
  • Jx
  • Odkaz
Výsledek výzkumu

Multi-scale design of advanced materials

The proceedings of the doctoral conference ?Multi Scale Design of Advanced Materials?, organized in the frame and with financial support of the project CZ.1.07./2.3.00/20.0197 ?Multidisciplinary research team in the field of Materials Design and its ...

JJ - Ostatní materiály

  • 2015
  • M
  • Odkaz
Výsledek výzkumu

EFFECT OF GRIT BLASTING SURFACE TREATMENT ON HIGH TEMPERATURE LOW CYCLE FATIGUE LIFE OF INCONEL 713LC

This paper presents the results of high temperature low cycle fatigue tests carried out on Inconel 713LC. This polycrystalline nickel based superalloys is mainly used for high temperature applications such as disks, blades and vanes of gas turbine en...

JL - Únava materiálu a lomová mechanika

  • 2015
  • D
Výsledek výzkumu

Determination of mechanical properties of light alloys and composites by means of Small Punch Testing

Mechanical properties of magnesium alloys were evaluated from SPT and correlated with results of uniaxial tensile tests. SPT characteristics were converted to uniaxial tensile properties by empirical formulas available in the literature. New formulas...

JJ - Ostatní materiály

  • 2015
  • D
  • Odkaz
Výsledek výzkumu

Modelling of the stiffness evolution of truss core structures damaged by plastic buckling

A finite element study based on 1D beam element model is performed in order to investigate the mechanical behavior of an elasto-plastic beam loaded in axial compression over its buckling limit. The mode of loading is related to the damage of truss-co...

JI - Kompositní materiály

  • 2015
  • Jx
  • Odkaz
Výsledek výzkumu

Stiffness and strength degradation of damaged truss core composites

Truss core laminates display stiffness and strength/density ratios superior to those seen in foam cored laminates. However, this superiority is held only for ideal shaped struts. If the truss core is damaged, its performance rapidly decreases towards...

JI - Kompositní materiály

  • 2015
  • Jx
  • Odkaz
Výsledek výzkumu

The prediction of size effect on J R curve for Eurofer97 steel by simplified mechanical model

The possibilities to derive fracture toughness from small specimens are naturally limited due to constraint requirements which are especially restrictive in toughness testing. The loss of constraint at the crack tip is more likely to occur as specime...

JL - Únava materiálu a lomová mechanika

  • 2015
  • D
  • Odkaz
Výsledek výzkumu

Simulation of Quenching of Ball Bearing Rings Made from 100Cr6 Steel

Thermal regime simulation with varying hardening temterature of three modes of oil quenching of ball bearing rings made of 100Cr6 steel was caried out in Sysweld program based on finite element analysis. As result complete graphical description of te...

JJ - Ostatní materiály

  • 2014
  • D
Výsledek výzkumu

Comparison of Fatigue Parameters of Alkali-Activated and Ordinary Portland Cement Based Concretes

Concretes used in civil structures are usually made on ordinary Prtland cement (OPC) base. Alkali activated concrete (ACC) are considered as a perspective building material. They show high strength, good durability, and good resistance to aggressive ...

JM - Inženýrské stavitelství

  • 2014
  • D
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