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In addition, as in the case of conventional materials, the stress/strain amplitudes, surface roughness and thermomechanical history are the other factors that govern the fatigue life of SMAs.
This is because, unlike most engineering materials, the properties of SMAs are very sensitive to slight variation in composition, microstructure, thermo-mechanical history and even experimental conditions.
Functional fatigue tests usually refer to complete or partial TC / TMC for evaluating the change in functional properties.
The transformation temperatures (TTs) and mechanical properties of the annealed wire in the martensite phase are given in Table 1.
Results Variation in Functional Properties on TMC.

The knowledge of the materials’ mechanical properties is a preliminary and important step in the seismic vulnerability assessment of existing buildings.
The first step in assessing vulnerability is the knowledge of the mechanical properties of the constituent materials.
The current European and Italian seismic codes [3, 4] foresee different knowledge levels (KLs) to which different confidence factors (CFs) are related.
As a rule, the main codes base the safety verifications on the mean value of concrete strength, therefore it appears interesting to analyse the variability of the mechanical properties of concrete found in a great deal of public buildings located in Basilicata region.
These mechanical properties were derived from compression tests on concrete cubes at the Laboratory of Testing Materials of the University of Naples performed in the framework of the routine controls prescribed during the construction of new buildings.

Petrov1,c and K.Verbeken1,d 1Department of Materials Science and Engineering, Ghent University (UGent), Technologiepark 903, B-9052 Ghent, Belgium a aurelie.laureys@ugent.be, b tom.depover@ugent.be, c roumen.petrov@ugent.be, d kim.verbeken@ugent.be Keywords: TRIP, Hydrogen embrittlement, mechanical properties, tensile tests, hydrogen induced cracking, EBSD, crystallography, SEM Abstract.
The goal of this work is to understand the response of the hydrogen saturated multiphase structure to a mechanical load.
Introduction Hydrogen introduction into steels is often correlated to a degradation of mechanical properties, especially loss of ductility [1].
The retained austenite transforms to martensite under external load, which results in an excellent combination of properties, such as high tensile strength, high ductility and good fracture toughness [4].
In mechanical terms, such a notch or crack is described by a local stress and strain field ahead of its tip.

An Analysis on Finding the Optimum Die Angle of Polylactic Acid in Fused Deposition Modelling Nor Aiman Sukindar1, a *, Mohd Khairol Anuar Mohd Ariffin2, b 1Mechanical Department of Polytechnic Kuching, Sarawak, Malaysia 2Department of Mechanical and Manufacturing University Putra Malaysia, Malaysia aaiman@poliku.edu.my (Corresponding Author), bkhairol@upm.edu.my Keywords: Die Angle, Fused Deposition Modelling, Natural Convergence Angle Abstract.
Pressure drop need to be observed as it affects the road width of scaffold design, thus affecting the quality of the extruded part.
The main interest in this study is analyzing the factor that effect of producing a precise product, thus focuses on the die angle which to find the optimum angle or natural convergence angle (2θo).
Pressure drop need to be concerned as it affects the stability of the flow along the liquefier length.
A material used in this study is Polylactic acid (PLA) and the physical properties of the PLA material need to be set in the FEA simulation.

It is a complex of all principles of technique, economy and environmental harmony. 3.1 The Technique Principle of Material Selection Material technique includes physical properties, mechanics properties and chemical properties.
Physical properties include density and electrothermal conductivity.
Chemical properties include oxidation resistance and corrosion resistance.
The quantificational mechanical property muster of material is φ.
The mechanical property constraint conditions are shown in formula (8).

Bhandakkar et al. [5] reported that fly ash did not affect the corrosion property.
Ravishankar, Mechanical properties of fly ash reinforced aluminium alloy (Al6061) composites, Int.
Basheer, Effect of fly ash addition on the physical and mechanical properties of AA6063 alloy reinforcement, Metals. 7 (2017) 477-479
Oguocha, Effect of fly ash particles on the mechanical properties of aluminium casting alloy A535, Mater.
Bhargava, Mechanical properties and corrosion behaviour of fly ash particles reinforced AA 2024 composites, J.

Milling Stability Lobe Diagram Construction on FV520B Stainless Steel and Experimental Testing Investigation Hongkun Li 1.a and Pengshi Zhao1.b 1School of Mechanical Engineering, Dalian University of Technology, Dalian, 116023, China alihk@dlut.edu.cn,bzhaops1991@163.com Keywords: FV520B; Milling chatter; Stability lobes; Experimental verification Abstract.
Because of well mechanical properties, the FV520B steel can meet the requirements.
It will seriously affect the milling efficiency and reduce the machining accuracy, wear off the tool, and even destroy the machine.
Milling force experiment needs to consider three factors (n, ap and f).
By orthogonal experiment theory, we took three different values ​​of each factor and designed the milling parameters.

Many statistical metrics have been applied to gear damage assessment, such as the root mean square, crest factor, and kurtosis, etc [1].
Most of these metrics measure the vibration intensity or characterize the statistical properties of gear vibration signals from the viewpoint of statistics.
Usually, the dynamic system of a gearbox exhibits nonlinearity, due to the intrinsic complicated motion, time-varying running condition, and fault induced factors.
For dynamic systems, the evolution of any state variable is the result of interaction between all the affecting factors, and contains the evolutionary information of other related state variables.
From the viewpoint of complexity, when a crack appears on a gear tooth, more factors will get involved in the gearbox vibration, thus the dynamic system becomes more complicated.

The technical feasibility of the support structure and its cost are the key factors to determine if the system can market or not.
The investment size of solar thermal power system is the key factors to decide its application prospects.
The main factors leading to the cost difference are the movable giant supporting structure.
At the same time, occupancy of the area is bigger; a single set of area is big, affecting the system total units.
Considering the cost and technological factors, most of the nodes use welded hollow spherical joints.

Thus, the micro-structure of concrete-steel interface may influence the levels at which concentration polarization occurs, thus affecting the chloride threshold and the localized corrosion development.
Vertical bars properties are less correlated than the horizontals.
Mix properties influence on ITZ is highly bar orientation depended.
For vertical bars, linear correlation with the mix properties is weak.
Pullout parameters of horizontal bars are well correlated with mix properties.