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The Tensile Strength Prediction of Welding Stiffened Panel The main factors which affect the structural strength of welded panels include the structure shape, the material properties of the structure mechanical properties of welded joints.
In fact, the structural strength of welded reinforced panel’s factors influenced the structural shape, material properties and mechanical properties of welded joints, etc.
Considering the impact of the above factors on the strength of the panel, the introduction of a number of factors affecting the coefficient, the formula (2) was modified: (3) In the formula:for the inside moment on panel strength influence coefficient;as the coefficient of stringer cross-section shape on the strength of materials;as the coefficient of the mechanical properties of the welding joint influence on the strength of the panel;for the skin stress concentration on the panel strength coefficient.
The mechanical properties of the panel are shown in Table 1.
Lin, et al. 2060 alloy FSW joint microstructure and mechanical properties.

The mechanical properties induced by the addition of both of modified kaolin were analyzed.
The mechanical properties of the foams with calcined kaolin were better than that with intercalated kaolin.
However, this expected result was not consistent with that of the mechanical properties, indicating that the role of hydrogen bonding was not the major factor in improving performance, but this conclusion was contrary to that of Xu[13] and Cao[14].
Fig. 2 FTIR spectra of pure PU foams, PU/C-K foams and PU/I-K foams Mechanical properties.
The mechanical properties of PU/modified kaolin nanocomposites, PU/C-K nanocomposites, PU/I-K nanocomposites and pure PU were given in Table 1.

The key factor in determining the mechanical properties of these natural fibre composites are regarding to the fibre-matrix adhesion [1].
Therefore, the selection criteria for both epoxy resins were selected basically on their mechanical properties as given in general specification.
The general specification and mechanical properties given by the manufacture is shown in Table 1.
Table 1: General specification and mechanical properties of Epoxy A and Epoxy B.
A study of fibre and interface parameters affecting the fatigue behavior of natural fibre composites.

In this work, the mechanical properties of the aluminum alloy (6061) before and after CEC process were examined.
The mechanical properties were tremendously increased in comparison with those of as cast and annealed condition.
The grain size of the materials plays very important role on the mechanical properties such as strength, hardness, wear resistant and fatigue [7-12].
Mechanical Properties Macrohardness, Tensile strength and Elongation properties are shown in Fig. 6 a, b and c respectively significant increase in macrohardness was obtained after the first cycle through the CEC process by a factor of ≈1.5 when compared to that of the annealed sample.
Wang, “The cyclic deformation behavior of Severe Plastic Deformation (SPD) metals and the influential factors”, Metals,Vol. 2, 41-55, 2012

The molecular structure of thin film surface composition were detected and analyzed by Fourier transform infrared spectroscopy (FTIR); and the barrier properties of the films were examined by MOCON water vapor permeability testing instrument, also，the relationship maps between permeability and process parameters were drew and the process parameters were optimized; The mechanical properties of thin films were tested by electronic tensile testing machine, and the curves of the relationship between the mechanical properties and process parameters depicted.
The mechanical properties of thin films were tested by the electronic tensile testing machine RGD-X005, whose elastic modulus precision was 0.01GPa and yield strength was 0.01MPa.
Among all the factors, background pressure, RF power, the sputtering pressure, the deposition time and the sputtering power had a great effect on the gas barrier property.
So the performance of SiOx/PET thin films was seriously affected.
The important technical effective factors of magnetron sputtering SiOx film included deposition time, sputtering pressure, and sputtering power. 2.

This modeling will allow us to introduce the mechanical properties real for each layer based on the directions of the fibers, which is more real.
The Boron / Epoxy patch has the lowest values ​​of the stress intensity factor since its mechanical properties are the highest.
-The patch was considered in block form where mechanical properties were introduced in constant engineers for calculated through the Abaqus calculation code
· The boron/epoxy patch has the lowest values ​​of the stress intensity factor since its mechanical properties are the highest
“Computation of stress intensity factors (KI, KII) and T-stress for cracks reinforced by composite patching”, Compos.

Bending properties of GF/pCBT after saline aging test.
The mechanical properties such as tensile, flexural and shear of the composites depend tightly on the component of the material.
The highe the temperature and the humidity is, the fast decline of the mechanical properties of the material.
The two factors make the performance of the material undulated and also more complex compared with pure temperature or humidity effect on the material.
The mechanical properties of both pCBT resin and its GF composites affected by the service environment greatly, and temperature and humidity are the two key factors that influence the performance of the material.

Also, the master curve of tensile properties are drawn using predetermined shift factor and the results are discussed.
Also, tensile tests are performed to get mechanical properties of solid propellant.
Based on the properties, the master curves of maximum stress and strain at maximum stress are plotted by using predetermined time-temperature shift factor.
(2b) Where ER is Relaxation modulus,aT1T0 and aT2T0 are the shift factors in relation to the T0 reference temperature.These shift factors, aT can be obtained from the horizontal shift according to reference temperature T0.
These tensile properties are horizontally shifted using the shift factors which were obtained eariler.

This paper deals with mechanical properties of PVA/halloysite nanocomposite films which were fabricated by a casting method.
Thus we attempted to improve the mechanical properties of PVA by adding halloysite, which has a large specific surface area.
One of the affecting factors causing this result would be the adhesion of the interface between polymer matrix and fillers.
Figure 2 depicts the effect of sulfuric acid surface treatment on the mechanical properties of PVA/halloysite nanocomposites.
Summary In this study, PVA/halloysite nanocomposites films were fabricated and mechanical properties of the nanocomposite films were evaluated.

The distribution of microstructure and mechanical properties of carbon-carbon composites Zhiyong Xie1,a, Ruixuan Tan1, Mingyu Zhang1, Zhean Su1, Jianxun Chen1, Qizhong Huang1 1State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China axiezhiyong310@tom.com Keywords: Carbon-carbon composites, Microstructure, Mechanical properties, Scanning electron microscopy, Optical microscopy, Raman spectroscopy, Three-point bending tests.
Introduction It is well known that carbon/carbon (C/C) composites produced by chemical vapor infiltration (CVI) of carbon fiber felts exhibit an attractive mechanical properties.
Besides statitistical fiber strength distribution, fiber volume fraction, fabrication process, et.al, the mechanical properties of C/C composites strongly depend on the microstructure of pyrocarbon[1-3].
The important parameters affecting microstructure are temperature and the change of the [AS/VR]-ratio.
The investigations about correlation between matrix microstracture and mechanical properties indicates the crack morphology is controlled by texture and its distributing of carbon.