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Because the mechanical properties of microcellular foaming material is similar to petroleum-based plastics (PS), PLA foams have been considered as ideal alternative materials.
The addition of chain extender also can enhance the decomposition temperature and the mechanical properties.
Blended PLA foaming Different from the chain of PLA, the blends are multi-phase materials.The mixing of PLA with other polymers can not only improve the foaming properties of PLA, but also improve the mechanical properties of the products.
The molecular weight of the PLA was an important factor on affecting crystallinity and melt strength.
The mechanical/thermal properties of microcellular injection-molded Poly(lactic acid) nanocomposites.

There are many factors affecting the seamline stress and resulting in the crack, and the influencing factor and the relevant influence parameters vary along the environment and condition.
It can ensure the long-term and reliable mechanical properties and realize the operating safeties of the bridge after broaden
The uncertain parameter affecting the seamline stress is complex.
To make reasonable design method, it is necessary to study these factors.
The factors influencing the performance of the seamline are various and influence with each other.

The study was further focused on the morphological characterization and mechanical properties.
The study is further focused on the mechanical properties of the ENR50/STR5L blends.
This evident resulted in a reduction of mechanical properties of the specimen in this study.
Conclusion The ENR50 showed the better mechanical properties when we compared with STR5L.
The findings can lead to the cost saving in terms of raw materials through using the ratio of 50:50, without affecting the mechanical properties, since 100% ENR50 is more costly whereas STR5L is much cheaper.

These materials can repair and reconstruction of anterior cruciate ligament, the choice of materials involves many factors such as stability of complications after anterior cruciate ligament reconstruction and postoperative.
Allograft material preparation and preservation of anterior cruciate ligament reconstruction due to cross infection allograft transplantation may lead to disease, thorough disinfection of tendon, and may affect the physical properties to the tendon, the application is restricted.
At present, many research and clinical application of artificial synthetic material has good biocompatibility, biodegradability and absorbability, not only has good physical and mechanical properties, but also has mature processing technology.
Summary Reconstruction of the anterior cruciate ligament material alternative choice relates to the stability and the postoperative complications of multiple factors.
Synthetic materials in the relevant indicators and mechanical properties are gradually to meet the anterior cruciate ligament reconstruction conditions, but the cost is high, tendon bone healing slowly, and the reconstruction of anterior cruciate ligament long-term effect is still controversial, limit the clinical application of tissue engineered anterior cruciate ligament.

It also has excellent mechanical properties, high thermal shock resistance and chemical attack, excellent creep resistance, good friction and wear properties [3-8].
Through research in the field of Si3N4, scholars found that the particle size of raw material and synthesized β-Si3N4 are one of the main factors affecting the thermal conductivity of Si3N4 ceramics [22-24].
Duan et al. [26] study the effect of additive ionic radius size on the thermal conductivity and mechanical properties of Si3N4 ceramics.
After testing, it is found that the mechanical properties of the sample will also be improved.
McQuarrie, Thermal conductivity: I, concepts of measurement and factors affecting thermal conductivity of ceramic materials, Journal of the American Ceramic Society 37.2 (1954): 67-72

The mechanical properties and durability of repairing mortar were studied.
The results show that the repairing mortar has good mechanical property, obviously anti-abrasion property and excellent bonding performance.
These damages have affected the safe working and service life of hydraulic structures.
The mechanical properties such as compressive, flexural and tensile strength, bond strength between repair mortar and repairing concrete base and durability such as abrasion resistance, anti-carbonation and impermeability performance were studied in this paper.
The anti-abrasion property of repairing mortars was estimated by wear rate and anti-abrasion strength respectively. 2.2 Results and Analysis 2.2.1 Mechanical properties of repairing mortar Table 1 shows the result of mechanical properties of repairing mortar at different age.

And weld line products cause many problems, such as appearance, size and mechanical properties of the drops, also can lead to deformation.
The properties on the direction of the flow of the molten plastic.
Weld line selection has a great influence to the position of the gate, and at the same time, the generation of fusion line also has its own features, to comprehensively consider the material properties, temperature, pressure, flow and so on factors, such as the weld lines designed to produce without obvious location, or will the weld lines designed to produce in not affect the mechanical properties of the products.
In addition to can make the surface of the ugly, they also can obviously reduce the mechanical properties of the affected areas, especially the impact strength (see figure 4 and figure 5).
This will obviously reduce the mechanical properties of components in this (see figure 7).

Biomechanical analysis of selected endoprostheses of hip joint by means of finite element methods Marcin Basiaga1,a, Joanna Przondziono2,b 1 Silesian University of Technology, 41-800 Zabrze, Gen. de Gaulle’a 66, Poland 2 Silesian University of Technology, 40-019 Katowice, Krasińskiego 8, Poland a marcin.basiaga@polsl.pl, b joanna.przondziono@polsl.pl Keywords: FEM, endoprostheses of hip joint, Pauwels model, mechanical properties.
Performed analysis constitutes the basis for optimisation of implant geometry and proper selection of material mechanical properties for its production.
Nowadays, such treatment has already become a common procedure to improve the quality of life of people affected by hip joint injuries.
The main factors constituting the basis of the process of designing and constructing include anatomic shape of the implant which is adapted to individual patients and selection of good quality materials.
The results that have been obtained during numerical analysis of endoprostheses by the Finite Element Method constitute valuable methodology that is necessary for designing their proper form, geometric properties and selection of the right mechanical properties.

Introduction As one-dimensional functional materials, whiskers have attracted great attention because they exhibit unique structure and various excellent physical, chemical, and mechanical properties [1], it showed excellent prospects for application materials in reinforcing and toughening.
As a new material, magnesium carbonate whisker has a incomparable properties compared with conventional whisker.
Influencing factors of preparation process.
Stirring rate is one of the important factors which affecting the particle size and the particle size distribution, magnesium carbonate whisker aspect ratio first increases and then decreases with the increase of the stirring rate.
Other factors also affect the formation of magnesium carbonate whisker, such as: the pH of the reaction solution, the reaction time, the added amount of surface active agent.

There are many factors affecting the quality, precision, microstructure and performance of LMDS-deposited parts.
Accordingly, the dilution ratio is not only an important index to judge the laser cladding quality, but directly affects the interlayer bonding strength and performance quality of as-formed metal parts.
Collins: A Combinatorial Approach to the Development of Composition-Microstructure-Property Relationships in Titanium Alloys Using Directed Laser Deposition.
[3] Phillip Roger Pratt: Analysis of Thermo-Mechanical Characteristics of the LENSTM Process for Steels Using the Finite Element Method.
(in Chinese) [6] Wen Guo: Microstructural Design of Mechanical Properties for Laser-Fabricated Stainless Steel Parts.