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Influences of Scarf-Joint of the Laminae in the Strength and Elasticity of Glued Laminated Timber Beams Carrasco, E.V.M.1, a*, Mantilla, J.N.R.2, b, Smits, M.A.3, c, Pizzol, V.D.3, d, Krüger, P.V.1, e, Rezende, M.A.P.1, f, Alves, R.C.1, g 1School of Architecture, Federal University of Minas Gerais, Belo Horizonte, Brazil 2Faculty of Engineering and Architecture, University Fumec, Belo Horizonte, Brazil 3School of Engineering, Federal University of Minas Gerais, Belo Horizonte, Brazil amantilla@dees.ufmg.br, bjudy.mantilla@fumec.br, cazevedosmits@gmail.com, dvpizzol@hotmail.com, epaulovonkruger@gmail.com, fmarco.penido.rezende@hotmail.com, grecosta_88@hotmail.com Keywords: Glulam, Scarf-joint, Mechanical properties.
Those skilled in the art to join wooden structural parts with adhesives indicate that the efficiency of splices depends on various factors, named: the scarf-joint geometry, the scarf-joint cut design, the assembly, the adhesive cure, the pression, the temperature, the humidity and the wood’s density, the presence of young wood and the slope of the fibers located on the scarf-joint.
Conclusions The percentages of recovery of mechanical properties of glued laminated wood beams in beveled slope function of scarf-joint when the joint are located in the external layer of the beam does not reach 100%.
Freas, Factors affecting strength and design Principles of Glued-Laminated Construction, USDA-FS-FPL.

Abstract: Based on the experimental study of the gravel layer under the horizontal vibration load, and the variation of particles’ response behavior according to experimental phenomenon, we study the distribution of the shear along the depth direction, propose the main factors which affect particle moves and dynamic stiffness and their distribution in the granular packs.
In recent years, there have been many results for the study of structural properties of granular materials.
Because of the complex, random features, many mechanical properties cannot be demonstrated and explained.
The main factors which affect the movement of particles includes: 1.the shear resistance which particles need to overcome(friction force and bite force between particles) [4] [5];2.the exciting force.
The movement of the particles which is caused by the vibrational energy has been affected by the shear resistance.

The different levels of these factors are shown in Table 1.
The-higher-the-better performance for one factor may affect the performance because another factor may demand the-lower-the-better characteristics.
Sasaki, “Wear and mechanical properties of sintered copper–tin composites containing graphite or molybdenum disulfide,” Wear, vol. 255, no. 1–6, pp. 573–578, Aug. 2003
Kaczmar, “Production and wear properties of copper based MMC strengthened with δ-alumina fibres,” Arch.
ZHU, “Thermal expansion and mechanical properties of high reinforcement content SiC p / Cu composites fabricated by squeeze casting technology,” Trans.

The influence of thermal cycling treatment of pseudo-α-titanium alloys OT4 and VT20 on their structural and substructural characteristics, as well as their mechanical properties is considered.
This contributes to an increase in the strength properties of alloys with satisfactory ductility and high-temperature strength.
The temperature range of thermal cycling, depending on the purpose of the hardened product, on the physical and mechanical properties of the material and its initial structural state, is selected.
These parameters affect the features of the formation of the structure and properties of pseudo-α-titanium alloys in the course of thermal cycling exposure to them.
Rust, Production and Properties of Bi-modal Ti-6Al-4V Blades for steam Turbine Application, Titanium - Science and Technology.

The microstructure and mechanical properties of the samples were evaluated by XRD, SEM, hardness and tensile tests.
The microstructure and mechanical properties of this new steel have been investigated.
Evaluation of Mechanical Properties.
Retained austenite carbon content increases its stability which causes the improvement of mechanical properties.
The microstructural characteristics including bainite plate thickness, the volume fraction of phases and retained austenite carbon content strongly influence the mechanical properties.

The seat structure consists of steel rectangular tubes and sheets material, which have the mechanical properties as (Elastic modulus/ Yield stress/ Poisson’s ratio) 195 GPa/ 470 MPa/ 0.26 and 133 GPa/ 390 MPa/ 0.26, respectively.
There were affected to stress concentration reduction of structure and increase of safety factor.
The material properties diversification yielded the changeless of maximum stress but safety factor was increased to 3.48.
So the thickness and material properties were considered as important factors to design the seat structure.
The 2k factorial design of experiment results showed that the thickness increment influenced to the maximum stress and the factor of safety was dominated by the material properties diversification.

The results show that the effect of mechanical properties of matrix on composite should be taken into consideration in designing composite.
Unlike the homogenous material, such as W alloy, the composite consists of W fiber and bulk metallic glass matrix, so the interaction between them exists under load, which will somewhat affect the composite properties.
As for the composite used for penetrator, the properties’ response to dynamic loading at high strain rate is also the important factor to be considered.
The Cu alloy, Cu-based bulk metallic glass, Ti-based bulk metallic glass, Zr-based bulk metallic glass, etc. were once chosen as matrix materials due to their high glass-forming ability, mechanical properties, especially dynamic properties.
Fig.3 and Fig.4 are mechanical properties curve for bulk metallic glass matrix and W fiber, which were obtained by dynamic compression test, and was simplified for establishing calculation model.

Incorrectly performed details may considerably affect the properties of the whole structure both in terms of thermal technical engineering and mechanical stability.
Incorrect implementation of the details may cause not only the deterioration of the thermal properties of the object but can also affect the stability of the entire building.
All these factors contribute to the fact that moisture in the house increases and this leads to penetration of water vapor through the wall from the environment with a higher partial pressure to the environment with lower partial pressure [2].
The arrangement and location of sensors allow the evaluation of the thermal insulation properties in detail of the building (Fig. 4).
[4] Jiri Teslik et al., 2013, Advanced Materials Research, Volumes 860-863, Airtightness and acoustic properties of family house from straw,1215-1218, 2013

Welds were produced by employing rotational speed of 375rpm and a travel speed of 23.5mm/min.The microstructure and mechanical properties of friction stir welded joints were investigated.
Zhang et al. [2] examined the relationship between microstructure, mechanical properties and welding parameters in the Ti-6Al-4V FSW weld.
The mechanical properties of the as-welded joint was evaluvated by the tensile tests, and the specimens were cut by EDM from the same joint.
The cavities were observed at bottom of the weld, also another factor resulting in decreased mechanical properties.
The mechanical properties of the FSW joint would be improved when the process parameters were employed appropriate.

Assessment indicators, determine the impact of factors and factor levels To be considered from the point of view of structural design and material design, the asphalt layer thickness, base thickness, the modulus of the asphalt layer, base modulus and subgrade modulus are the main factors affecting the assessment indicators.
The range is greater, the description of the factors that affect greater.
Therefore, analysis of variance, and further analysis of the fluctuations of the influencing factors affect the extent of the indexes.
Sensitivity analysis Through the intuitive analysis and variability analysis above, we can get the impact of factors that affect the degree of control indicators[5].
Summary The sensitivity analysis shows that the importance of factors affect pavement design indicators are not the same.