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A large number of complex oxides are often characterized by a wide range of significant changes of electrical, magnetic, mechanical, optical and catalytic properties.
Under certain specific conditions, subtle changes of physicochemical properties and environmental factors (eg. temperature or oxygen partial pressure) such materials can also exhibit characteristics of semiconductors, superconductors, ferroelectrics or ferromagnetic materials.
LaCoO3 based perovskites have very interesting electrical magnetic, catalytic and mechanical properties [1-4].
Dopants of other elements such as Ca or Sr may subtly modify these properties.
Neocera’s PEBS-20 electron source with the Pioneer 180 vacuum chamber setup Experimental procedure LaCoO3 based perovskites are known as multifunctional materials with unique electrical, catalytic and mechanical properties described in numerous publications [9, 10].

In the present research microstructure and mechanical properties were studied using optical microscopy, morphological analysis of the cross-sections and mechanical tests (hardness).
The system consisted of a tilted nozzle for plasma suppression and a correctly dimensioned shielding trailer to protect the weld bead and heat affected region whilst hot, that avoided the use of any kind of “skirt”.
Also the undercut at the root are wider with the increase in the distance between laser and MIG, however this factor is the index of an insufficient energy in the root zone.
The realized experimental plan is the two factors (laser beam power and peak current of the arc pulse) and three levels (then 32 tests) ones.
The weld obtained using hybrid welding process underlines values of hardness slightly lower at the centre of the weld, in comparison to those of the heat affected zone.

These approaches were used to studies the defect effect on the mechanical properties of thin film, mechanical properties of nanotubes, and tribological phenomena at nano-scale interfaces.
Hence the study is aimed to investigate the interfacial behavior and mechanical properties of nano-materials.
In addition, Minot et al. [33] found that the mechanical and electrical properties of the nanotubes were affected by contact deformation via nanoindentation techniques.
Baohe, Mechanical and physical properties on carbon nanotube, J.
Gillespie, Mechanical properties of vapor-grown carbon fiber, Carbon 33 (1995) 1217-1221.

With computer-assisted engineering analyses, this study tends to look for the factors in breaks and the design for follow-up reinforcement according to the distribution and concentrated positions of stress in the structure.
Regarding the load of symmetrical supportive wings NACA 0018, AOA between free stream and the leading edge is 0o that coefficient of lift is not calculated, but coefficient of drag is 0.0268. 2-3 Material properties The utilized materials contain four layers, and the thickness of each layer would be slightly different according to the materials.
DBLT 600-E (Quadriaxial E-glass fiber direction (quasi-isotropic material), Density = 1.66 g/cm3, volume fraction = 36.5% , thickness = 0.6 mm; Mechanical properties: Tensile modulus = 13.5 GPa, Tensile Strength = 253 MPa, Compressive Strength = 195 MPa, Shear Strength = 111 MPa 2.
L 600-E Unidirectional E-glass fiber direction (Orthotropic matrial); Density = 1.66 g/cm3, volume fraction = 36.5%, thickness = 0.69 mm; Mechanical Properties: 1-1 direction: Tensile modulus = 24.5GPa, Tensile Strength = 710MPa, Compressive Strength = 348MPa; 2-2 direction: Tensile modulus = 8.0GPa, Tensile Strength = 70MPa, Compressive Strength = 120Mpa 3.
From the four cases, increasing the length of patches does not significantly affect the reduction of the maximum stress.

Composite laminate design is an important procedure in defining the mechanical properties of laminated composite structure to be used in multi-directional service loading application.
Illustration on sampling for flexural testing Results and Discussions Flexural Properties Flexural properties are consisting of flexural modulus, Eflex, maximum flexural stress, σflex and flexural strain, εflex.
Experimental values are differ than simulated values due to few factors which includes experimental fiber volume and weight fraction and voids, as resulted from types of fiber textile forms and fabrication parameters [13, 14].
Moreover the presence of voids in laminates affects the mechanical properties of the experimental samples [13-16].
Vinogradov, “The effect of matrix cracking on mechanical properties in FRP laminates,” Mech.

Legacy 7XXX series aluminum alloys were developed primarily for their high strength with less regard for their fatigue properties, corrosion resistance and fracture toughness.
Various structural elements made from these alloys exhibit failure in service due to one or more of these compromised material properties.
Both SCC and fatigue are driven by a mechanical driving force: the stress intensity at the crack tip.
Hardie, “Factors controlling crack velocity in 7000 series aluminum alloys during fatigue in an aggressive environment”, Corr.
[4] DOT/FAA/AR-MMPDS-01, Metallic Materials Properties Development and Standardization (MMPDS), Office of Aviation Research, Washington, D.C. 20591, (2003)

Introduction Ride comfort is an essential factor that determines the quality of a car.
To manage the vehicle vibrations produced due to these factors and enhance the damping factor of the car, the following suspension systems are widely used: Passive, Active and Semi-Active.
This system has an upper hand over both passive and active types due to the rapid and reversible changes in the properties of MR and ER fluids [4, 5].
Magneto Rheological (MR) fluids are a mixture of iron particles in base oil and its shape and structure is constantly affected by a varying magnetic field [6].
This is in accordance to the dynamic properties of the MR fluid and the flexible characteristics of the semi-active damper system.

To improve the chemical and mechanical properties of epoxy resins, the existing structure of the resins has to be modified.
We report herein the synthesis and characterization of epoxy resin from DGEBA and terephthalic acid as well as investigation of its mechanical properties to support the development of material technology, especially in the field of defense technology.
k=Aexp-EaRT (6) From the calculation, the value of activation energy value (Ea1) and the collision factor (A1) for the first step reaction were 38,965.22 Joule/mol and 2,082.66 (g/mgeq/minute) while the activation energy value (Ea2) and the collision factor (A2) for the second step (Fig. 3) were 2,230.23 Joule/mol and 3.22 x 10-4 (g/mgeq/minute).
Table 2 shows how the mole ratio of reactants between DGEBA and TPA affects the reaction rate constant (k).
Qiao, Studies on curing kinetics and tensile properties of silica-filled phenolic amine/epoxy resin nanocomposite, Polymers. 11, 4 (2019) 8

Since the grain size has a very important influence on its mechanical properties and corrosion resistance it is significant to study the average grain size of TWIP steel.
Grain size and its distribution are important parameters which reflect the microstructure of metallic materials, and directly affect the mechanical properties and physical properties of materials, so it is an important parameter in production process control [2,3].
It is a hot research in new nondestructive testing technique and evaluation of material properties.
Kr, Ks and Kd are constants related to the material properties and αs represents the scattering attenuation coefficient.
Conclusions TWIP steel is widely used in the automobile manufacturing industry due to the characteristics of high elongation and high tensile strength, and the average grain size has an important influence on its mechanical properties.

Box 524, Auckland Park Kingsway Campus, Auckland Park, Johannesburg, South Africa. 2006. 2Doctorate Candidate, Department of Mechanical Engineering Science, University of Johannesburg, P.
FSP has great advantages, which include solid state microstructural evaluation, modifying the mechanical properties of materials by optimizing the tool design and the process parameters, the depth of processed zone and location which can be identified by the operator.
For the VFSP, the overlap ratio is an important factor for the evolution of the microstructure and alteration of the mechanical properties [7].
Nevertheless, FSW is associated with a number of unique defects which are undesirable in joints as they are known to adversely affect the joint integrity or the processed zone.
The quality of joints produced in FSW/FSP are affected by the choice of the tool profile, the rotational speed, feed rate, tilt angle, plunge depth and variation in plate thickness.