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Research has shown that both the proportion of replacement and the properties of recycled aggregates play a significant role in affecting the tensile strength, compressive strength, and bonding characteristics of concrete.
In certain cases, recycled aggregate concrete exhibits lesser mechanical properties when compared to concrete made with normal aggregates.
In specific instances, recycled aggregate concrete (RAC) displays inferior mechanical properties compared to normal aggregate concrete (NAC) due to factors such as the diminished strength, higher water absorption, and increased porosity of RCA, as noted elsewhere [9].
Kobrosli et al. [11] investigated factors that could affect the bond between concrete-strand and concrete-duct in reinforced concrete (RC) slabs and beams while the considered grout was Sika AnchorFix.
Material Properties.

Production Process and Nondestructive Testing of Soybean stalks Particleboard Wei Lu, Jia Yaoa, Ping Han, Wanjiang Wu, Chuang Liu College of Mechanical Engineering, Jiamusi University, Jiamusi, 154007, China a jiahuiyuyao@163.com (corresponding author) Keywords: Soybean stalks particleboard, Orthogonal experiment, NDT(nondestructive testing), Process parameter Abstract: Orthogonal experiment of four factor and three level has been adopted, through the process analysis of the various factors on mechanical properties, the best process conditions of soybean stalks particleboard are chosen as: density is 0.7g/cm3, glue content is 12%, and hot pressing time distribution is 3+4 minutes, hot pressing temperature is 175℃.
In order to use them properly, we must not only grasp their production process, but need to understand its material quality, particularly mechanical properties.
Through the influence factors analysis on the performance, the optimum process parameters was achieved.
Orthogonal experiment was adopted, the factors and levels of experiment were shown in Table 1.
Therefore, the density requirement can meet the standard physical properties requirements was OK, from consideration of economic benefits, 0.7 g/cm3 was the best density of the particleboard.

It would lead to air-gap magnetic field distortion of the generator, which affected the generator’s electromagnetic properties.
In the research of the machine’s electromagnetic properties, the permeance had been acted as the key factor affecting the air-gap magnetic field and induced potential, having been the key link of motor design and electromagnetic performance optimization.
So the serious influence of the electromagnetic properties of generator would be brought about.
Then the changing permeance would have serious effects to the generator’s electromagnetic properties. 2.
And the spatial distribution of the air-gap magnetic field waveform was the motor’s most critical factors deciding the electromagnetic properties.

It realizes the integrated manufacturing of grinding and surface hardening and has widely application prospects in the field of grinding machine and improving surface properties of metal material[1-2].
It can be seen that: the orders of each factor affected on average value of grinding-hardened layer’s depth as follow: depth of cut ap > table speed vw >grinding method gm > interaction av.
The results shows that: only F-value of depth of cut ap is bigger than critical values, so depth of cut ap is significant factor to affect the average value of grinding-hardened layer’s depth, table speed vw and the grinding method gm are insignificant factor.
It can be seen that: the orders of each factor affected on uniformity of grinding-hardened layer’s depth as follow: grinding method gm > interaction av> depth of cut ap > table speed vw.
Conclusions (1) In the process of grinding-hardening machine, depth of cut ap is the significant factor affected the average value of grinding-hardened layer’s depth; the significance of grinding conditions that affected the uniformity of grinding-hardened layer’s depth are very limited

These measured crack discontinuous displacements make it possible to evaluate the effective stress intensity factors (KI)est and (KII)est in order to compare them with the theoretical factors KI and KII and the crack contact behavior under mixed-mode conditions was discussed.
The chemical composition and mechanical properties are shown in Table 1 and Table 2, respectively.
Table 1 Chemical composition (mass %) C Si Mn P S 0.47 0.22 0.70 0.015 0.019 Table 2 Mechanical properties Young's modulus (GPa) Poisson's ratio Yield point (MPa) Tensile strength (MPa) Elongation (%) Reduction of area (%) 206 0.3 319 622 25.4 35.8 Experimental Results Residual Stress Distribution.
Mode II Stress Intensity Factors.
Fig. 5 Evaluation of mode I stress intensity factors 10 8 6 4 2 0 Estimated stress intensity factor (KII)est MPa 1086420 Stress intensity factor KII MPa (KII)est=KII R =0 (a =4.0 mm) R =- 1 (a =4.1 mm) β =45 deg.

Morphology and mechanical properties of injectable ceramic microspheres S.M.
Abstract The aim of this study was to analyze the effect of starting powder granulometry and sintering conditions on the morphological structure and mechanical properties of injectable hydroxyapaptite (HAp) microspheres.
The mechanical properties of the microspheres were evaluated, to investigate if their integrity could be maintained during the injection process.
On the other hand, an increase in porosity may negatively affect the mechanical properties of the microspheres, which is not desirable since their integrity must be maintained during the injection process.
Conclusions The use of HAp powders with different granulometries enabled the preparation of microspheres with different morphological structures and mechanical properties.

N.M.Mehta,etc[5] studied the mechanical properties of jute and biological resources-rice shell, husk, sugar cane and bark reinforced staple hybrid composites.
In this paper, the mechanical properties of jute/carbon hybrid composites were predicted theoretically.
Meanwhile, those two composites were analyzed about their mechanical properties.
But there is a minor error between the theoretical value and the test value, because it neglects the shear force and other factors between the interfaces when we design the mathematical model, so the model needs to be studied further.
References [1] Zhao L,Yu Jiany, Surface treatment of jute fiber and the mechanical properties of jute fiber mat reinforced composites.

However, the alternative method of testing small defect-free specimens and implementing reduction factors to obtain mechanical properties has been reported to be of little use with oak wood [13,14].
Among the qualitative variables studied: presence of pith, presence of collapse (crushing or distortion of wood cells during drying), only presence/absence of collapse affects mechanical properties.
McDonald, Investigation of the mechanical properties of red oak 2 by 4´s.
Determination of some physical and mechanical properties.
Toratti, Probabilistic treatments of mechanical properties of wood, in: P.

Table 1: CFF typical mechanical properties.
Thus, throughout this research, the investigation was done on the tensile and flexural properties of CFFs/UP composites with varied fiber loading, along with its factors affecting it.
Wool, Mechanical properties of chicken feather fibers, Polym.
Mechanical and thermal properties of chicken feather fiber/PLA green composites.
Effect of chemical treatment on the mechanical properties of sisal fibre reinforced polyester composites.

Characterized by excellent material properties such has high mechanical, thermal and chemical stability technical ceramics such as ZrO2, SiC, Si3N4 and AlN are increasingly being used for various applications.
Relevant material properties of these ceramics are presented in Table 3.
Table 3: Material properties of the ceramics as obtained from the manufacturer.
The significant parameters affecting the MRR and TWR are presented in Table 4.
Among the factors analyzed, current was the most significant factor.