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Different types of steel fibers with variations of addition volumes were applied to the concrete mixtures and various kinds of mechanical properties such as strength, toughness, and fracture energy were evaluated.
The workability and mechanical properties of each FRC mixture were evaluated and the effects of fiber types and addition volumes were observed.
This is because the structural design is fundamentally based on the mechanical properties under static loading conditions.
As a preliminary study, in order to observe the effects of fiber types and fiber volumes on the changes of mechanical properties of FRC mixtures, and for future studies related to the changes of dynamic increase factors due to fiber reinforcements, the single type of concrete mixture that is currently used for nuclear power plants (especially for containments) in Korea was chosen as a base concrete mixture.
Also, three different volume fractions (Vf = 0.5, 0.75, and 1.0%) were applied to permit observation of the effects of fiber volume on the variations of mechanical properties of the FRC mixtures.

The grain size, shape and distribution of the grains of foundry sand, the type and quality of bonding material, the density to which the sand is packed and the percentage of moisture used for tempering are important factors in regulating the degree of permeability [8].
Clay and water act as control addition to influence mechanical properties of greensand casting mould.
Clay and water have a significant role in improving the mechanical properties of greensand mould.
Ariffin and Haliza, Mechanical properties of tin tailing sand-clay mixture from Batu Gajah, Perak, Malaysia for making greensand casting mould: Paper presented at the 15th International Conference on Advances in Materials and Processing Technologies (AMPT 2012), Wollongong, (2012)
Noumowe, Effect of used-foundry sand on the mechanical properties of concrete: submitted to Journal of Construction and Building Material (2009)

Ceramics are widely used in every field of contemporary industrial because of its many excellent properties.
Therefore, how to improve mechanical properties of ceramic materials has been attracted a great attention in the relevant area.
Domestic and international research has shown that, boundary constraint is an effective way to improve mechanical properties of materials.
The value of constraint force also affects load capacity.
It jumps out of the traditional design framework of materials structure and has many excellent properties.

Springback is a common phenomenon in steel plate forming, caused by the elastic redistribution of the internal stresses during unloading, which may affect the tolerance and final shape of parts.
The material properties of the mild steel are temperature dependent and the various values of mechanical properties at different temperatures are listed in Tables 1 [7], with density of 7.85g/cm3, friction coefficient of 0.12, Hill48 plasticity law and bilinear isotropic hardening materials.
Table 1 Material mechanical properties of mild steel No.
In Table 1, elastic modulus, yield strength and tensile strength decrease with increasing temperature, while the springback by the combined effect of these three factors, eventually leading to the law presented in Figure 4.
(a) (b) Fig. 5 Material mechanical properties on the effect of springback (a) Effect on springback by yield strength (σs) (b) Effect on springback by tensile strength (σb) Springback compensation for thick freeform surface parts forming The springback compensation simulation of the six different temperatures is calculated by the Die Compensation module of PAM-STAMP 2G.

Exposure of concrete to high temperatures affects its mechanical properties.
Introduction Mechanical parameters of the concrete is reduced due to high temperatures. [1] That's why it's important to find nondestructive testing methods for thermally loaded concrete.
Maximum Length Sequence with accurate power spectra, crest factor of 1 and superb autocorrelation property, is therefore very suitable for nondestructive testing.
This point generally corresponds to the real onset of the received pulse and, unlike the threshold crossing, is little affected by the signal amplitude.
Destructive and non-destructive tests showed a decrease in mechanical parameters of concrete to a temperature of about 900 °C.

The research not only examines the stiffness and strength properties of the cover, but also provides a theoretical guidance for the future structure design and parameter optimization.
Therefore the overall deformation of the cover will not affect the combing, cleaning and so on.
In practical work, due to the cotton beam quality, gauge, speed, vibration and other factors may have varying degrees impact [5][6], so it should ensure the deformation is as small as possible in the design.
It is learned that the maximum deformation occurs in the middle of the cover and the maximum stress occurs in the connection of the fixed card and hard metal pin, which is bound to affect the card quality.
Pro/ENGINEER Wildfire 4.0 3D mechanical design[M].

Microstructure, Surface Characterization and Fatigue Assessment of 56SiCr7 Spring Steel Roselita Fragoudakis1, a, Fani Stergioudi2, b, Nikolaos Michailidis2, c and Georgios Savaidis3, d 1Tufts University, Department of Mechanical Engineering, USA 2Aristotle University of Thessaloniki, Department of Mechanical Engineering, Physical Metallurgy Laboratory, Greece 3Aristotle University of Thessaloniki, Department of Mechanical Engineering, Laboratory of Machine Elements & Machine Design, Greece aroselita.fragoudakis@tufts.edu, bfstergio@auth.gr, cnmichail@eng.auth.gr, dgsavaidis@meng.auth.gr Keywords: Heat Treatment, Shot-peening, Tempering, Spring Steel, Microstructure, Surface Hardness, Fatigue Life.
Introduction The degradation of the properties of a component subjected to cyclic loading is demonstrated first through changes in the microstructure of the component (nucleation of defects), followed by initiation and propagation of cracks.
The microstructure of the component is one of the primary factors that affect its fatigue life, which is one of the designated performance parameters of leaf springs [1].
They both have a direct effect on the fatigue life and strength of the end product [2-5], as they are responsible for the microstructure and mechanical properties of the core and surface of the leaf.

It is considered the anchored effect is influenced by some factors.
As the rock character and the grout property are similar, the rock bolt anchored effect is optimal.
And on this basis for detailed analysis of the factors affecting it.
Conclusion (1) It can be seen from the above analysis, many factors influence a bolt anchoring effect, and lead to the anchoring mechanism is complex system engineering
The mechanical behavior of intentioned grouted rock bolts.

Experimental Study on Fire Resistance Properties of Post-installed Rebar Connection Xin Wang1, a, Changjiu Jiang1,b , Kaozhong Zhao 1,c , Xiangrui Chen 2,d 1 College of Civil Engineering, Shandong Jianzhu University, Jinan 250101, China 2 Tongji University, Shanghai 200092, China a wangxin@sdjzu.edu.cn, b jchj99@126.com, Keywords: high temperature, bonded-in rebar, organic adhesive, anchorage depth Abstract: A serial of fire tests have been conducted to study the fire resistance of the post-installed rebar connection with organic adhesive.
In the past decade years, lots of research about various factors affecting the behavior of bonded-in rebar in room temperature has been carried out [1].
According to the analysis above, the conclusion can be obtained that the anchorage depth of the rebar exerts a great influence on the mechanical properties of the anchorage beam in fire and increasing the depth properly can improve the fire resistant limit to avoid anchorage failure prematurely, which provides necessary safety margin for structures. 4 Conclusions (1) Obvious temperature gradient exists in the bonded-in beam; the closer distance to the edge of the specimens tends to the higher temperature
“Experimental research on parameters affecting anchorage performance of post-installed bars in concrete”.Journal of Building Structures S2: 275-278(in Chinese) [3] Changqing Liu, Zhoudao Lu and Zhanhong Li. 2010.

Recently, research of ferrite materials doped rare-earth ions and their properties have been received much attention.
The essential magnetic properties of the studied samples rely on the distribution of kinds of cations at the tetrahedral and octahedral sites.
The investigation showed some influence on the basic magnetic and electrical properties of ferrite.
Magnetic properties.
It is clearly indicated that Sm3+ has been introduced into the lattice effecting ferrite properties from magnetic response of doped Sm3+ samples.