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But we have also found a number of limitations in adhesive bonding: the joint properties depend on the adhesive choice; adhesives have to be employed with the due safety measures (protective clothing, volatile emission control, fire protected storage and so on); structural adhesive can require heat curing, which increases the costs; they have a limited shelf life; material's control is necessary during supply, since their properties (i.e. viscosity) can vary, affecting the final joint characteristics; the joint strength depends on the pre-treatment [4, 13, 15].
Figure 2 reports some properties of the studied resins.
The safety measures, adopted in the phase of sample preparation, allowed us to eliminate such process factors as joint adhesion pressure, temperature, resin curing time.
In conclusion (Figure 6) the data for both the factors is so distributed that their single effects are negligible.
� Statically the two factors are negligible and an interaction exists.

Meanwhile, the factors which can have effects on the behavior of the beam-column joints are also obtained.
The reasonable parameters such as material constitutive, the boundary conditions and mesh types will directly affect the accuracy of finite element analysis results.
To compare the differences between the experimental results and analytical results, the component sizes, reinforcement arrangement, material properties and forced states of model M1, M2 and M3 are the same as joint specimens ZHJ1, ZHJ2 and ZHJ3 designed in reference [9].
The concrete damaged plasticity model is suited to simulate mechanical properties of concrete under monotonic, cyclic or dynamic loadings in low confining pressures.
The main reason is that the finite element analysis is always realistic but in practical experiments, there are some inevitable factors, such as the defects and errors occurred in the process of loading and measuring.

In special, LSP is an innovative surface treatment technique[1] applied to improve the mechanical properties and surface microstructures of metallic components.
LSP is very effective in improving metallic materials properties, such as fatigue, corrosion and wear resistance [2,3].
It is significative to improve the properties, especially fatigue resistance and wear resistance ability.
They have discussed and found that increasing impacts is propitious to get deeper affected layer.
Work hardening and grain-refinement are the main factors improving the hardness.

Analysis of the Replication Properties of Lightguiding Plate for Micro Injection Compression Molding Y.K.
The mold temperature is the most significant factor of replication properties of microstructure of lightguiding plate for micro injection compression molding.
This paper uses the single-parameter method to discuss the replication properties for different process parameters.
Table 2 shows that the replication properties of microstructure on micro injection compression molding.
To sum up, the mold temperature is the most significant factor of process parameters for replication properties of lighguiding plate.

The physical properties of cement are given in Table 1.
The Physical properties of fine aggregates are given in Table 2.
Coarse aggregates are typically used in concrete and other building materials, and their properties can significantly affect the strength and durability of these materials.
The Physical properties of coarse aggregates are given in Table 3.
Compaction factor test values for various mixes 3.3 Compressive strength: Compressive strength is one of the critical properties of concrete to be tested as it is linked with load carrying capacity and durability.

It would be inevitably affect equipment running quality and increase the frequency of maintenance or replacement of the parts.
Dynamic load behavior of the rolling mill rack included the load magnitude and load property.
The frame structure and shape of the rack was shown as Fig. 5(a), and material properties main parameters were shown as Table 1.
Generally, safety factor of the rack is not less than 10.
Under this requirement, the safety factor of the rack was Where nj was rack safety factor, ng was roller safety factor, σb was rack strength limit, σs was rack material yield limit.

Tables 1 show the physical properties of NFA and FRA.
Physical properties of NFA and FRA Table 2.
Aravind, Mechanical Properties of Hybrid Fibre Reinforced Concrete using Recycled Aggregate Vineetha V.
Md Akil, Mechanical properties and microstructure of recycled mortar reinforced with hybrid fiber, 2018 7(4) (2018) 6
Ramli, EFFECT OF HYBRID FIBER ON THE MECHANICAL PROPERTIES OF RECYCLED AGGREGATE CONCRETE, Jurnal Teknologi (Sciences & Engineering) 80(5) (2018) 1-12

Meanwhile, an acoustic model was theoretically built on the transfer matrix method to calculate and analyze the influences of the coating loss factor, density, Young's modulus and the frequency on underwater acoustic absorption properties.
Polyurethane elastomer have good mechanical properties, damping properties, adhesion properties and wear resistance, and its performance can be adjusted by means of molecular design [6].
High adhesive strength castable polyurethane elastomer can overcome deficiencies of ordinary rubber poor adhesive properties with iron.
The impact of the adding of P(VAc-co-TAIC) macroporous resin beads and iron powders, and P (VAc-co-TAIC) macroporous resin beads hierarchical gradient structure and other factors to underwater high frequency(100 kHz ~ 300 kHz) acoustic absorption performance of coatings could be studied.
Conclusion In summary, this article showed that considerable means for improving the underwater high frequency acoustic absorption properties of underwater acoustic materials.

Besides that, mix design and the way of production like mixing, transporting and pouring concrete is also the factors to get a better quality of concrete.
On the other hand, coconut fibre has excellent physical and mechanical properties that can be utilized more effectively in the development of composite materials [4].
Fig 7 Drying Shrinkage Conclusion and Recommendation The overall objective of the work was to investigate the feasibility of mechanical properties of blast furnace slag and rice husk ash with coconut shell as partial replacement of aggregates.
Sarireh, “The Use of Fine Blast Furnace Slag in Improvement of Properties of Concrete,” Open J.
C, “Properties of Concrete with Coconut Shells as Aggregate Replacement,” Int.

It wants to find the various factors impact on the bus reliability under different conditions.
Thus, the properties of the hybrid bus can be improved, the fundamental data and experience for the large-scale production has been accumulated.
Mechanical connection parts can satisfy the load demand under normal circumstances.
Many factors can affect reliability of the hybrid bus.
When the damaged assembly parts do not affect the vehicle running, it will influence energy transfer rate.