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Physical and mechanical characteristics of possible aggregates of local production for this type of concrete affecting its operational properties are considered.
Currently, in the laboratory of the Department Materials Science in Construction conducted research of physical and mechanical properties of concrete mixtures based on peat and polystyrene foam and testing of their technological parameters.
Belyakov Physico-mechanical and thermal insulation properties of lightweight concrete based on modified peat for wall structures, Construction and education, 14 (2011) 52-56
Properties and use of coal fly ash a valuable industrial by-product.
Arakelyan, Strength and deformative properties of light concrete depending on the properties of aggregates Moscow, (1986), 24.

., Prosecka 76, 190 00 Prague, Czech Republic avlastimil.kralik@fsv.cvut.cz, bjiri.nemecek@fsv.cvut.cz, ckoudelkap@itam.cas.cz Keywords: aluminium foam, spherical nanoindentation, micromechanical properties, plastic properties Abstract.
The aim of this paper is to identify, in addition to elastic properties, inelastic properties of tiny aluminium foam cell walls that can be directly deduced from the load–depth curves of spherical indentation tests using formulations of the representative strain and stress.
Some deviations received from different tests arose and, therefore, their effect on the evaluation of inelastic properties is discussed.
The parameter C is referred to as "constraint factor".
The correct determination of material properties by spherical indenter depends on the exact knowledge of its radius.

Macroscopic mechanical properties of the bulk metallic glass (BMG) are affected by the nano-structure such as icosahedral mid-range order and local crystallization; those are considered to be controlled by the cooling rate in casting.
Therefore, the mechanical properties of BMG plates have inhomogeneity in the thickness direction because the cooling rate is highest at the plate surface and it is lowest at the midsection of the plate [15].
Although fatigue cracks initiate from the highest stress concentrated site in homogeneous materials, the crack initiation site in inhomogeneous materials is considered to be controlled not only by the mechanical conditions but also the local mechanical property of the component.
The difference of S-N properties under plane-bending and axial-loading is shown in Fig. 2.
For fatigue tests of BMG plate, however, the inhomogeneity of material should be taken into account in addition to mechanical factors such as the maximum shear stress and shearing strain energy.

This is mainly due to its aspects of good soldering properties, low price, adequate physical and mechanical properties and good fatigue resistance.
Void formation in solder joint is one of the many critical factors governing the solder joint reliability.
Voids may degrade the mechanical robustness of the board level interconnection and consequently affect the reliability and the conducting performance of the solder joint.
Previous studies [1] have indicated that the reflow process and the solder material are the most significant factors that affect void formation.
This phenomenon was happen everyday for four years and may affect the microstructure of the solder joint.

In order to describe the cyclic stress and strain properties of AM60 by means of the energy storing characteristics of microstructure during irreversible deformation, a plastic constitutive model with no yielding surface was developed for single crystal by adopting a spring-dashpot mechanical system.
The polycrystalline plastic constitutive model is established based on a simple mechanical model, by utilizing the KBW self-consistent theory.
When coupled with large and variable grain sizes, the HCP structure has in the past led to less than optimal mechanical properties.
Conversely, increasing temperature has an adverse affect on mechanical properties [16].
Many magnesium alloys have been developed and continue to be researched and developed in an effort to improve mechanical properties.

Study of Graphite in Al2O3 Ceramic with Copper Matrix Li Changhong College of Mechanical and Electronic Control Engineering, Beijing Jiaotong University, Beijing 100044, China Keywords: Copper matrix, Graphite, Friction, Ceramal Abstract.
In these researches, as metal only servers as adhesive, the property of this ceramic with metal matrix is similar to ceramic, which has high wear resistance property, good heat resistance capacity, but low toughness and low plasticity [4-5].
This kind of ceramic with metal matrix has excellent comprehensive mechanical property.
When graphite content increases from 1% to 2%, friction factors decreases a large range, from 0.33 to 0.23.
Graphite does not affect friction factor remarkably, so friction factor decreases only a little, and wear and tear reduces a small range, too.

The creep and damage properties used are taken from Table 1.
The requirements for and the use of miniature test specimens to provide mechanical and creep properties of materials: - a review.
Creep properties and failure assessment of new and fully repaired P91 pipe welds at 923 K.
Determining high temperature properties of weld materials.
Shear correction factors in creep damage analysis of beams, plates and shells.

However, the factors that affect the machined surface residual stress are various and complex.
The tool geometry parameters are illustrated in Table 1, and the mechanical properties are shown in Table.2.
Fig.2a shows that the average cutting force is about 200N, and it reveal that that basically prestress conditions hardly affect the cutting force.
The surface topographies are observed via a 3D Super Depth Digital Microscope System (KEYENCE VHX-500FE) with an enlargement factor of 500.
Figure.4 represents the microstructure of chips under different prestress condition, the photographs are captured by a SEM with an enlargement factor of 200.

The establishment of the finite element model of the chassis Material properties.
The actual chassis structure is complicated, so some of the parts are simplified as follows on the premise of truthfully reflecting the main mechanical properties of the structure in order to facilitate the modeling and analysis: (1) Ignore the impact of non-load bearing members.
(3) We can consider that the welding in the structure is the ideal, and material properties on the weld area are the same with the other regions.
Dynamic load coefficient is mainly determined by three factors: the road conditions, harvester structural parameters and the travel speed.
Because these factors are very complicated, dynamic load coefficient can not be determined through the method of mathematical analysis.

The important role of dissolved elements ( Mn,Fe) in the process of rolled products and their effects on final properties Dr.
Jochen Hasenclever Hydro Aluminium Deutschland GmbH , Research and Development , Post-Box 2468 , D - 53014 Bonn - Germany Keywords: AlMn-,AlFe-alloys , recovery, recrystallisation, grain structure, mechanical properties Abstract The important role of dissolved elements, such as manganese or iron, in the production process of rolled material was in the focus of this investigation.
Introduction Important aspects of rolled products are their softening and recrystallisation behaviour and the resulting properties. [1-3].
The content of manganese / or iron was calculated from the resistivity using the factors 3.83 for Mn and 3.2 µohm/wt.% for iron.
The decomposition of Mn during preheating is strongly affected by the element Fe than by Si.