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Although several factors are involved, some of these failures are related to the mechanical properties of the posts [13].
Summary Multiple factors should be considered when choosing a post and core system.
Shetty, I Coutinho, Factors determining post selection: a literature review, J.
Gülmez, Mechanical properties of endodontic posts, Key Eng.
Dessai, Factors affecting the fracture resistance of post-core reconstructed teeth: a review, Int.

The partial substitution of wollastonite micro fiber and granite block cutting waste enhanced the mechanical properties of cement concrete. 1.
Mechanical and physical properties of cement, wollastonite micro fiber, aggregate and granite block cutting waste Sl.
No Properties of Materials Observed Values 1.
Results and Discussions The observed results for different mechanical properties and fresh density are recorded in Table 4.
Mechanical properties of high-performance cement binders reinforced with wollastonite micro-fibres. 

As input factors in turning process, the cutting speed, the feed rate and the tool nose radius were used.
The prescription of roughness parameters on mechanical drawings is very important because the surface roughness can significantly affect the functionality of the part in the whole assembly, during the service of mechanical equipment.
The factors able to influence the sizes of the surface roughness parameters and the possibilities to optimize the values of these factors in order to obtain the roughness prescribed on the mechanical drawings were investigated by the researchers [1,2,3,4].
On the basis of the above mentioned factors, the Ishikawa diagram presented in figure 1 was elaborated.
If in the case of surface roughness parameter Ra there are well known the influences exerted on it by the feed rate, cutting speed and nose radius, the way in which these factors are able to affect the surface roughness parameters Rsk and Rmr(c) was less studied and it is less known.

Based on the above and making use of a complete factorial design 2³, we investigated the individual and interactive effects of three factors that may affect the optimization of the mechanical properties of nanocomposites based in cassava starch having the elastic modulus as response variable.
Three variables associated to the formation of the nanocomposite were considered as factors that could influence the improvement of the mechanical properties of the starch film, being these the contents of cassava starch (A), glycerol (B) and modified clay (C).
Mechanical properties.
Figure 1 shows the Pareto graph showing which of the individual factors analyzed, as well as which interactions between these factors contribute significantly in the optimization of the mechanical properties of cassava starch biofilms.
Conclusion The modified clay was the factor of greater statistical significance on the elastic modulus of the biofilm observed, being the factor that most contributed to the improvement of the mechanical properties of the biofilm.

Modification of the phenol-formaldehyde binder with hydrogen peroxide reduces the curing time of the phenolic binder, the pressing temperature of the FSF plywood, and improves the physical and mechanical properties of the FSF plywood.
Regression models have been developed for dependence of the plywood strength during cleavage along the adhesive seam, strength during static bending, and thickness swelling after 24 hours in water on the factors varied in the experiment – the proportion of hydrogen peroxide addition and the pressing temperature.
The technological factors varied: factor X1 – the proportion of the hydrogen peroxide additive from 0 to 2.0 % of the binder weight (from -1 to +1 in the coded designations); factor X2 – pressing temperature – from 120 to 170 °C.
(3) Graphic dependences influence of various factors on cleavage strength along the adhesive seam after boiling for 1 hour are presented in Fig. 1, 2, on thickness swelling after 24 hours in water – in Fig. 3, 4.
Del Menezzi, Properties of a laminated wood composite produced with thermomechanically treated veneers, Advances in Materials Science and Engineering. 4 (2016) 1–9

Grain number across thin sheet metal thickness direction is another important factor that affects flow stress.
Keller et al. [6], and effects of all the four factors of t, d, t/d ratio and surface properties on stress can be seen directly from the stress map.
Conclusions Factors that affect mechanical properties of thin sheet metal in micro plastic forming processes were analyzed and summarized: thickness, grain size, grain number across thickness and surface properties.
Khatibi, et al., Size dependency of mechanical properties of high purity aluminium foils, Mat.
Feaugas, Microstructural size effects on mechanical properties of high purity nickel, Int.

*Corresponding author Keywords: Mechanical properties, polycarbonate, polymer, thermal degradation.
The results show that the samples treated at 200ºC have their mechanical performance affected.
It is widely used in several industrial sectors, as it combines not only transparency and shock resistance but also desirable optical, thermal and mechanical properties [4].
Tensile properties of polycarbonate, before and after thermal degradation.
Thus, it can be inferred that the exposure of the PC to temperatures higher than 150ºC can cause reduction of its mechanical properties.

This work suggests some possibilities of determination of cutting conditions for the cutting process.The most important factors affecting the surface roughness of machined sourfaces are the cutting parameters.
Right selection of tool geometry and cutting parameters that affect surface roughness are important factors in providing tolerance.
So, a complete evaluation of roughness should take into consideration all these factors.
The cutting parameters are the main factors affecting the quality of turning machined surfaces, in terms of roughness.
Most of the mechanical energy used in the chip formation process becames heat, wich generates high temperatures in the cutting area and as a result, influences the mechanical and phisical properties of both the workpiece and the cutting tool [6].

The vulcanization behavior, mechanical properties and microcosmic structure of the composites were investigated.
The mechanical properties of the composites were tested by using a CMT4104 electronic universal testing machine.
Two factors, the CTAB content and the CTAB-modified attapulgite content, which affect the vulcanization properties of the composites, are discussed.
And the mechanical properties of NR would be reinforced obviously by the CTAB-modified attapulgite.
The composites prepared using CTAB-modified attapulgite showed good mechanical properties.

Rodewald, et al. [6] and Nakamura, et al. [7] also show the magnetic properties and some mechanical properties of sinter magnet depending on the characteristic of the powder (size, shape, flowability, etc.).
Magnetic powder, binder and fabrication process are important factors that affect the bulk density of magnet.
The different particle size of screened powder does not significantly affect the magnetic properties of bonded NdFeB magnet.
Uestuener, Coercivity and mechanical properties of Nd-Fe-B magnets in dependence on the average grain size, 18th Int.
Song, Effect of process on the magnetic and mechanical properties of Nd–Fe–B bonded magnets.