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Laser power, scan spacing and layer thickness are considered the most critical factors.
Printing direction must be planned in order to match the desirable mechanical properties.
The type of material and internal porous architecture affects directly the tissue response for the implanted scaffold, in other words, material’s composition, internal structure and mechanical properties must match the target tissue to recover [57].
Populating scaffolds with growth factors, osteoinductive substances might represent a promising feature to enhance bioactivity properties.
The use of biomaterials, nanotechnology and growth factors show promising results for bone tissue regeneration.

Research on Mechanical Properties of a New Fabricated Wall Material in Building with Light Steel Structure Changlin Wang*, Shuren Jiang, Baocun Li, Shuai Li The First Company of China Eighth Engineering Division Ltd, Jinan 250220, China *Corresponding author e-mail:chilamwang@126.com Keywords: fabricated, wall material, light steel structure, construction, mechanical properties.
The results of various indexes show that this new wall material structure has a safe and reliable structural composition and excellent mechanical properties, and the material forms and material quality can be customized, it enriches the application design range of building material architecture and is worth promoting.
Analyses of mechanical properties.
Among them, the side column of the framework and Angle plate assembly arrangement number is more, the area is small, its stress ratio are smaller, but the plate is affected by factors such as tectonic modular, not easy to do optimization, and to consider using prefabricated wall plate internals as structures related research is less, the combination of section design is relatively conservative.
The steel connector in the key node of this project has complicated modeling, so it is difficult to judge its mechanical properties and deformation indexes through conventional analysis.

In principle, they determine part of the affected relevant utility properties for example by welding technology used during the manufacture process.
The weldability itself varies from material to material and depends on several factors, such as welding conditions, chemical composition or demands on joint properties.
There are two types of documents that guarantee the required quality and properties of weld joints.
This serves as a guarantee of achieving the desired weld properties and protection against the formation of undesirable defects in the weld area such as cracks in the Heat Affected Zone (HAZ) or in the weld, lack of fusion between materials or weld undercut [5].
These defects can be classified as external macroscopic factors.

Mechanical properties of Hydroxyapatite (Ca10(PO4)6(OH)2, HA, still need to be modified to improve its function as dental filler or bone implant.
For biomaterials applications, metal oxides added to enhance the mechanical properties of HA must be biocompatible.
Pradhan, “Effect of doping (Mg, Mn, Zn) on the microstructure and mechanical properties of spark plasma sintered hydroxyapatites synthesized by mechanical alloying,” Ceram.
Veljovic et al., “Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity,” Ceram.
Paszkiewicz, “Mechanical properties of HAp–ZrO2 composites,” J.

Additionally, the mechanical properties of the subsequent cast plaster specimens were also investigated.
According to classical nucleation theory, super-saturation is one factor affecting the nucleation and growth of alpha-HH whiskers.
Physical and mechanical properties of the specimens.
Adding 0.6 g CuCl2 can noticeably influence the phase structure, particle morphology, and physical and mechanical properties of the resultant plasters.
P., Effects of plaster to water ratio on physical and mechanical properties of ceramic pieces produced by the slip casting process.

A full factorial experiment was carried out with varying factors at two levels.
Laser radiation is a universal tool of thermal action and allows cutting and engraving materials of various physical properties.
To study the process of laser profiling of a grinding wheel on a ceramic bond, we select a grinding wheel (125 × 20 × 32 25A 60L 6V 50) and highlight two main factors affecting the processing parameters: radiation power – P and processing speed – V.
Values of levels and intervals of variation of factors.
D., Sefedin Application of the method of planning an experiment to study some factors affecting the depth of cut in laser cutting, Scientific Notes of the Crimean Engineering Pedagogical University, No. 2 (64) (2019) 267-270

Complex systems with complex, open, self-organization, nonlinear, level and other properties, should be researched by comprehensive and integrated methods [3-7].
According to the brittle characteristics of complex systems, water conservancy and hydropower engineering construction accident could be seen as the results of collapse with the accumulation of system brittleness, various risk factors leading to accidents could be considered as factors affecting brittleness.
In order to further examine the effect of the factors affecting the system brittleness and make system sensitivity analysis of influencing factors, responsibility consciousness E11, the field inspection condition E21 and the number of mechanical equipment E31 are taken as an example for analysis.
Conclusions The traditional system fragility evaluation method is usually based on the assumption that the affecting factors are independent and the fragility degree can be calculated by linear addition.
However, in complex systems this assumption may be invalid because of the interaction of the subsystem, mutual influence of the affecting factors and the nonlinear features of the subjective factors.

For the evaluation of final component properties under consideration of production-induced material characteristics, it is necessary to determine the mechanical parameters of parts and structures.
The results of this investigation enable an estimation of the geometrical influence of the specimen size in regard to the mechanical properties.
For example, in sheet metal forming flat tensile specimens are used to investigate the mechanical properties in the uniaxial tensile test according to DIN EN ISO 6892-1 [2].
For this purpose, it is necessary to exclude other influencing factors such as different friction coefficients of the used materials in the evaluation.
Only in this way can the influence of other factors be excluded.

In addition, the Vickers hardness test was used to measure the mechanical properties of the weldments.
The micro-hardness test was used to examine the metallurgical properties of 6061-T651 aluminum alloy welds.
Optimization via the Taguchi method In this work, the welding current, travel speed of welding torch, flow rate of argon gas and the weight ratio of mixed flux were selected as the control factors.
Four four-level control factors were considered in this work.
Flow rate of argon gas was the significant parameters in affecting the welding quality.

Experimental Study on Steel slag-limestone Powder Concrete After Freezing and Thawing Cycles Mingzhen Han, Zhiyun Zhou, Fei Yang,Yawei Zhan (Department of Civil Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China) Keywords: Steel slag,limestone powder,concrete,mechanical property, frost-resistance Abstract:Using the fast freeze-thaw test method, we tested the loss modulus and compressive strength of steel slag-limestone powder concrete after 0,25 times,50 times,75 times,100 times freeze-thaw cycle,studied the mechanical properties and frost resistance performance after the freeze-thaw cycle.
The results showed that adding a certain amount of steel slag-limestone powder does not affect the anti-frost property of concrete; established different dosage of steel slag concrete freeze-thaw damage model: y = a + bx + cx2, degree of fitting is better; large quantity of steel slag used in concrete shall be a wider range of research.
Although many scholars made many research in the limestone powder and steel slag replacing cement, but both in mixed with concrete at the same time,the research on anti-frost property is relatively small.
By using the ordinary concrete long-term performance and durability test method , we tested the mechanical properties after freezing and thawing of 0~100 times.
Study on the durability of HPC under combined action of damage factors.Wuhan :Wuhan University Of Technology,2010.