Search results

Some effects of self-curing on the mechanical properties of High Performance Concrete (HPC) are discussed in this paper.
The mechanical properties of HPC don´t show an increase, oppositely, microcracks occurrence can reduce some properties - flexural strength, fracture properties and also durability.
Experimental Details The objective of this paper is to test the effects of two different types of internal curing on the mechanical properties of concrete.
The last group is one with chemical admixtures which improve the mechanical properties of concrete.
However, it is necessary to improve the methodology of the comparisons of individual results and the effect of internal curing on other factors influencing concrete.

However, in general, the mechanical properties were much lower than that of the neat unsaturated polyester resin properties [11, 13].
So, one of the attempts to improve the mechanical properties is by adding low-cost inorganic filler, such as CaCO3.
Nevertheless, in general, the mechanical properties at the VF of 20% were still lower than that of at the VF of 30%.
This caused more decreasing the mechanical properties of the composites.
As a result, it could more decrease the composites mechanical properties.

Corrosion behaviors and mechanical properties of CrN film were evaluated.
The mechanical properties of the CrN coated samples were evaluated using nanohardness, ball on disk and scratch testers.
Mechanical properties of the CrN coated samples, i.e., nanohardness, elastic modulus, wear rate and adhesion property, were measured.
Mechanical Properties.
Both factors result in a brittleness of the CrN film.

The mechanical properties and aging of 65Mn were investigated with the controlled rolling and cooling process of spring steel.
Introduction 65Mn belongs to the manganese spring steel, products widely used, mainly used in the manufacture of cushion spring, spring plunger pump speed, shock absorber and a clutch spring, brake spring [1-3]. 65Mn wire rod with excellent comprehensive properties, such as mechanical properties (especially the elastic limit, ultimate strength, than the yield strength ratio), elasticity attenuation resistance performance (i.e., anti sagging performance, also known as anti relaxation properties), fatigue resistance, hardenability, physical and chemical properties (heat resistance, low temperature resistance, corrosion resistance etc.).
Experimental results and discussion The mechanical properties of 65Mn steel were tested after using the new rolling process, the results in Table 3 and table 4.
Spinning temperature directly affects the mechanical properties of wire rod.
(2) Of large size rod 65Mn mechanical properties as compared to the tensile strength, elongation and contraction rate section and small size, was gradually declined

Copper Effect on Mechanical Properties of Al-CNF Composite Material Elaborated by Liquid Metallurgy with Induction Melting ROYES Paul1,a*, MASQUELIER Nicolas1,b, BREVILLE Thierry²,c, BALLOY David3,d* 1Nexans Research Center Lens, Boulevard du marais 62301 Lens, France 2ATYS Consulting Group, ZA pré Robelin, 358 route d’Uriage 38320 Herbeys, FRANCE 3Univ.
Physical properties of metal matrix composite (MMC) with CNF were investigated in several scientific publications [1][2][3].
It is one of the targets of this paper to highlight the good integration of CNF in the composites by the resulting effect on the mechanical properties.
The results don’t show CNF effect on grain size and the elaboration process doesn’t affect Fe content.
But several factors are responsible for the increase of mechanical properties.

Introduction Titanium foam has attracted considerable attention as bone implant due to its high porosity, good mechanical properties, excellent corrosion resistance, favorable permeability and biocompatibility [1-3].
To address this issue, the mechanical properties of titanium foam should be tailored by controlling the porosity, pore size and porous morphology [4-8].
Results and Discussion The addition of space holder is an important factor that affects the porosity of the as-sintered titanium foam.
Fig. 1 Porosity of titanium foam versus addition of space holder content The size and distribution of the space holder directly affect the pore size and distribution in the as-sintered samples, and thus the mechanical properties.
The two primary factors affecting the compressive strength of the titanium foam are the pore size and porosity.

The microstructure and properties before and after laser remelting were studied.
The use of high-energy density laser beam mix the alloy of different compositions and properties together with the substrate surface, generating an alloy layer with completely different compositions and properties between substrate surface and the substrate.
As phase constitution changed, properties of laser remelting coatings also changed, mainly reflected physical and chemical properties of α-Al2O3 material.
As hardness and bond strength, the two main factors influencing the wear resistance of the coating, improved by a big margin, the wear resistance of the coating improved substantially.
The two most important factors affecting wear resistance were hardness and bond strength.

It has been revealed that small additions of dopant to Y-TZP were beneficial in enhancing the mechanical properties of Y-TZP.
Another factor which can also affect the mechanical and physical properties of Y-TZP is types of sintering technique.
After sintering ceramic specimens were verified for fractional density, mean grain size, mechanical properties.
Besides that, the mechanical properties, hardness and toughness of the material were significantly increased to ~14.1 GPa.
Sintering over 1450ºC is expected to deteriorate the ceramic material’s physical and mechanical properties as the sintering of higher temperatures would affect the material's performance.

According to damping loss factors of model subsystem and acoustic absorptivity of cavity, sensitivity analysis of vibro-acoustic response is discussed.
The division way of plate subsystem can affect computational accuracy greatly.
The influencing factors should be synthetically considered in the design of acoustics structure.
Summary Through the numerical simulation, the influencing factors on vibro-acoustic response were analyzed.
The greater the influencing factors the smaller the response value.

In the multi-pass weld, the welding distortion is also affected by the welding sequence and other factors.
Because of the large amount of factors affecting the welding distortion, it is very difficult to predict welding distortion in actual production process.
Physical Properties of Materials.
As the various mechanical properties of welding seam metal and basic materials, especially the different yield strength, they were defined by two different materials in the mechanical calculation.
The same as the temperature calculation, materials of high temperature mechanical properties in the document was used.