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This development is caused by two factors.
The decrease in the size of the metallurgical notch results in a considerable improvement of the mechanical-technological properties of the welded material MS1200.
Consequently, an objective of future investigations is to determine the extent to which the mechanical and technological properties of the weld are affected by the decrease in zone width in combination with the alteration in the geometry of the coarse-grained zone.
In a further step, investigations are planned for determining the effect of the upset pressure on the mechanical and technological properties of the material.
Impairment of the mechanical and technological properties in the weld area is often associated with these structural changes.

Optical path difference affects the distribution of the interference pattern directly, and the light interference pattern gives information of phase and amplitude in turn.
Introduction With the development of science and technology, people has realized the optical properties more and more deeply.
When interference of the Coherent light takes place, correspondence of optical path difference and stripes have been analyzed between the qualitative and quantitative, which will be the difficult quantity of measure into observed stripes changes, and the indirect measurement can characterize the physical quantity of material properties, such as wavelength and refractive index.
Namely, the wave nature of the incident object changes with mechanical objects, added value is
At the same time, the spatial and temporal coherence of light is given to improve the factors of measurement accuracy, Not only we should pay attention to matters in the measurement, but also it is people's research direction in the future .

The results show that, the crack is initiated from heat affected zone (HAZ) of the rail web.
Besides, the nonmetallic inclusions and defects in the rail steel are main influencing factors of rail life [7-8].
From Fig.1(d), the microstructure around the hole is mainly composed of pearlite and ferrite, which indicate the crack was initialed from heat affect zone (HAZ).
Effect of flashing and upset sequences on microstructure, hardness, and tensile properties of welded structural steel joint.
Influence of Nonmetallic Inclusion Characteristics on the Mechanical Properties of Rail Steel.

In general, mechanical properties are mainly affected by the microstructure in the process of thermal deformation.
Those medium phases additionally give control of austenite grain growth and recrystallization process, correspondingly, influencing the mechanical properties.
The static recrystallization process is mainly affected by factors such as temperature, strain rate and deformation [9, 10].
Köthe, Influence of microalloying on the mechanical properties of medium carbon forging steels after a newly designed post forging treatment, J.
Liu, Mechanical properties and microstructural characterization of medium carbon non-quenched and tempered steel: Microalloying behavior, J.

Therefore, oil casting should possess both excellent mechanical properties and good corrosion resistance.
Sn element is difficult to remove in steelmaking process, and will segregate at grain boundaries as residual element that is unfavorable to the mechanical properties [4, 5].
There is therefore a need to understand the influence of Sn on properties and corrosion behavior of the steel.
Table 2 Ion concentration of formation water extracted from oil field Ions Cl- HCO3- SO42- Ca2+ Mg2+ Na+ Content（mg/L） 15000 600 5450 880 1050 9560 Experimental Results Mechanical properties.
The size of the substructure of martensite directly influences the properties of martensite steel, and the sizes of packet and block are direct factors to decide the strength and toughness of the steel [8, 9].

Ultimate bearing capacity of statically-pressured pile pipe is affected by many factors, such as pile body, soil around pile and construction conditions.
Shallow soil layer will be excluded from the calculation of side friction, because of its small thickness, soft and uneven properties.
is weighted average of each physical-mechanical parameter of soil layer around pile.
The size of the correlation reflects the influence degree of vertical ultimate bearing capacity of single pile affected by various influencing factors.
Conclusions (1) Vertical ultimate bearing capacity of statically-pressured pipe pile is affected by many influencing factors and there exists higher complexity and nonlinearity among these factors as well as the ultimate bearing capacity and these factors.

This is mainly because that the material properties are determined by several factors, such as: materials, components, organizational structure and materials preparation or processing technology, which are so difficult to use mathematical models to accurately describe that experts can not have a clear understanding of exists among them within law.
In materials science and engineering fields, there are many complex factors influencing material’s structure and properties.
These two types of relationship are affected by many factors, so the artificial neural network can be used to deal with many complex data set affected by many factors, to summarize semi-empirical laws, establish mathematical model, and accordingly predict performance of unknown material and optimize the process.
Eberhart, and Yuhui Shi, Computational Intelligence Concepts to Implementations, POSTS & TELECOM PRESS, 2009 [4] M.A.Yescas.Modeling the microstructure and mechanical properties of austempered ductile irons [Dissertation].PhD Thesis, University of Cambridage,Nov. 2001 [5] S.H.Lalam, H.K.D.H.Bhadeshia and D.J.C.MacKay.Estimation of mechanical properties of steel welds part 1: yield and tensile strength [J],Science and Technology of Welding,2000,5(3):135~147 [6] S.H.Lalam, H.K.D.H.Bhadeshia and D.J.C.MacKay.Estimation of mechanical properties of steel welds part 2: Elongation and Charpy toughness [J],Science and Technology of Welding,2000,5(3):149~160
[9] M.Marimuthu.Design of welding alloys creep and toughness [Dissertation].PhD thesis, University of Cambridge, UK, 2002 [10] F.Tancret, H.K.D.H.Bhadeshia and D.J.C.MacKay.Design of a creep resistant nickel base super-alloy for power plant applications Part 1–Mechanical properties modeling [J].

In order to enhance the mechanical properties of copper joints, FSP has been regarded as an effective method.
Dislocation density is a key factor for determining the mechanical properties of materials[11].
At tool speed of 300 rpm, cracks and cavities are the key factors determining the ductility of samples.
In tool speed of 600 rpm mechanical properties is improved by higher plastic deformation during process and adequate heat input .Increasing traverse speed from 40 to 100 mm/min mechanical properties improved.
The origin of non-uniform microstructure and its effects on the mechanical properties of a friction stir processed Al–Mg alloy.

Acidic liquids' erosive potency is influenced by many factors, including pH, chelation properties, and frequency and duration of consumption [30].
The denaturation properties of the fluid improve as the amount of hydroxide ions increases.
Urban, Surface properties of multilayered, acrylic resin artificial teeth after immersion in staining beverages, Journal of Applied Oral Science. 23 (2015) 376–382
George, Effects of nonaldehyde immersion disinfection on the mechanical properties of flexible denture materials, The Journal of Prosthetic Dentistry. 121 (2019) 843–847
Boening, Physical Properties of Polyamide-12 versus PMMA Denture Base Material, BioMed Research International. (2014) 1–8

Potential influencing factors that might affect the strength such as organic contents, contents of stabilizer, and curing periods were studied.
Ming (Eds.), Natural Zeolites: Occurrence, Properties, Applications, Reviews in mineralogy and geochemistry, Mineralogical Society of America, Washington, 2001, pp. 551–588
Elsen, Pozzolanic reactions of common natural zeolites with lime and parameters affecting their reactivity, Cement and Concrete Research. 39 (2009) 233-240 [7] F.
Stace, Effect of Humic Acid on Physical and Engineering Properties of Lime-Treated Organic Clay, Engineering and Technology 59 (2011) 1820-1825 [14] BS1924-2:1990, Stabilized materials for civil engineering purposes- Part 2: Methods of test forcement-stabilized and lime-stabilized materials [15] R.
Jameson, Mechanical Properties of Soil Cement and Applications in Excavation Support, Master thesis, MIT (1996) [16] BS EN13286-53:2004, Unbound and hydraulically bound mixtures: Part 53: Methods for the manufacture of test specimens of hydraulically bound mixtures using axial compression [17] F.Massazza, Properties and applications of natural pozzolanas, in: J.