Search results

For high (45℃)/low (-25℃) temperature experiments, the reduction of FIBC base materials’ mechanical properties were not obvious and woof fabric reduced a little faster comparatively.
Plastic aging causes breach of material’s inner structure and leads to reduction of its mechanical properties.
Because aging mechanism is complicated, it is difficult to study properties change caused by different aging phenomenon directly at present, but is analyzed through experimental data.
The main reason of sawtooth waveforms is that the same direction silks broke at different time, which led to reduction of strength efficiency and increase of elongation, at last tensile strength less than theoretical value.
As can be seen from Fig. 6, along with the natural exposure time increased, tensile strength holding ratio and elongation holding ratio of FIBC base materials reduced, but the reduction degrees were different.

Also data base of the material must be prepared and must be integrated with the knowledge based system so that these can interactively run.
The study aims to develop this knowledge based system using Artificial Intelligence Technologies and data based management system together.
Material Data Base: An important module of developed system is material database.
However, each of these studies was prepared for the different aims while they used the same data.
• The documentation errors by the manual process can be minimized because of the improved data integrity

There after they were hot forged by power hammer from Ф35 mm x 60 mm length cylindrical block in to 60 mm length x 45 mm breadth x 15 mm height rectangular block with 30% volume reduction and cooled in air.
Fig. 1: SEM micrographs showing size and particle shape of the nano alumina powder Fig. 2: EDAX Spectrum of nano Al2O3 particles used in the synthesis of Al 1100 (Mg) - nano Al2O3 composites Fig. 3: XRD pattern of nano Al2O3particles used in the synthesis of Al 1100 (Mg) nano Al2O3 composites Fig. 4: Average Brinell hardness of forged unreinforced alloy and nanocomposites developed by increasing the wt% of nano Al2O3 particles The powder has been examined for their X-ray diffraction (XRD) pattern as shown in Fig 3, using X-ray diffractometer in the 2θ range of 10-70° using CuKa radiation target and nickel filter, step size and dwell time were suitably adjusted, which was used for identification of various phases with the help of inorganic JCPDS (Joint Committee on Powder Diffraction Standards) X-ray diffraction data card available from the International Centre for Diffraction Data as the Powder Diffraction File (PDF).
Due to ineffective reduction in porosity and ineffective breakup of particles agglomerates, forged nanocomposites AMP0.75, AMP1 and AMP1.25 have comparatively less strength and ductility than forged nanocomposites AMP0.25 and AMP0.5.
The strength increases up to 0.5 wt% addition of nano Al2O3 may be due to the reduction of porosity content, reduction in grain size, uniform distribution of nano Al2O3 particles due break up of particle agglomerates and improved bonding between matrix and reinforcement and also may be due compressive stress involved in forging process.
Improvement in ductility up to 0.5 wt% may be due reduction in matrix grain size, reduction of the porosity content and more uniform distribution of particles due to break up of particle agglomerates.

Other advantages include a reduction in fretting between the patch and the adherend and prevention of corrosion.
The SS and DS repairs were tested in tension in a hydraulic testing machine (Instron® 8801) equipped with a 100kN load cell, at a constant velocity of the crosshead of 0.5 mm/min, considering the crosshead data for the displacement (d) measurement.
The values introduced in Abaqus® for the adhesive layer damage laws, defined from average values of the test data, are as follows: Young’s modulus, E=1.85 GPa, shear modulus, G=0.56 GPa, tn0=21.63 MPa, ts0=17.9 MPa, Gnc=0.43 N/mm and Gsc=4.70 N/mm.
This is justified by the smaller magnitude of peel stresses owing to the absence of the adherends deflection, and also due to the reduction of peak shear stresses at the overlap edges caused by the reduction of differential shearing between the adherend and patches [3].
This was justified by the smaller magnitude of peel stresses owing to the absence of the adherends deflection, and also due to the reduction of peak shear stresses at the overlap edges caused by the reduction of differential shearing between the adherend and patches.

The paper deals with the problematic phases of tests that are necessary to create a material model, but which may not always provide relevant data.
Depending on the choice of tests arrangement, the results data of the measured parameters show considerable differences that must be harmonized for the material model.
The dependence of tensile stress st in cross-section edge on tensile strain et is relevant data before macrocracking.
The material model can be refined using additional data: § Poisson’s ratio n § modulus of rigidity Gf § shear strength t and its dependence on stain e - Fig. 8 § reduction of shear strength due to cracking § shape of yield surface Fig. 7 Determining of residual part of stress-strain diagram using fracture energy Fig. 8 Dependence of shear strength of material on strain The experimental way for determining these parameters is already quite difficult and so their setting remain in many cases on the recommendation of the author of specific computational program.
[10] Buljak V., Oesch T., Bruno G., Simulating Fiber-reinforced concrete mechanical performance using CT-based fiber orientation data, in: Materials (Basel) 2019;12(5), 2019.

The system can be obtained rapidly of the test results for the development of advanced auto transmission system provides reliable test data, to find and solve the weak link of design immediately.
According to the test data and results of the physical prototype to analyze its strengths deformation, however, can’t be improved and optimized in the design phase with an uncertain improving goal and a long and costly test cycle.
The combination use of dynamic software ADAMS and finite element software ANSYS to study a typical transmission second gear meshing condition enabled the analysis of the impact performance of transmission gears, which can effectively reduce the design time, reduce costs and get results quickly, complete experimental data required and greatly improve efficiency.
Results are passed to the ANSYS in the data form of *. lod, providing the required load spectrum data to finite element analysis.
Automobile Transmission main reduction gear finite element stress analysis, Computer Technology Apply, 1999,3.

According to the data of climate and runoff from 68 weather stations and 105 hydrologic stations in Hebei province between 1956 and 2000, the change of climatic essential factors and runoff are analyzed.
According to the data of climate and assessment of surface water resources from 68 weather stations and 105 hydrological stations in Hebei province from 1956 to 2000, the change of climatic factors and runoff are analyzed.
On the basis of observed data by 20cm caliber evaporation pan, the maximum of mean annual evaporation in Hebei province is 1881mm in 1960s, falling gradually later.
In addition, according to the observed data, a positive correlation is found between evaporation and runoff, and both of them show a downward tendency in the course of time.
And the data for the study and simulation of climatic systems are insufficient.

After obtaining the data set, response surfaces of the resonant frequency changes are constructed.
Delamination Identification Results In order to examine effectiveness of the present method, delamination identification of a cantilever beam is conducted based on analytical data and experimental data.
Identification Results Based on Analytical Data.
Identification results of delamination locations based on analytical data Title of Publication (to be inserted by the publisher) Identification Results Based on Experimental Data.
Identification results of delamination location based on experimental data The delamination identification results based on analytical data and experimental data clearly show effectiveness of the present two-step identification method using resonant and anti-resonant frequency changes.

Despite the interest, the data available on reinforcing steel are still rare.
Recently in [6] data at high-strain rate of the rod bar reinforcing steel from an existing bridge built in the sixties has been presented.
In this preliminary phase, these first data have been compared with two existing relationships available in literature [1, 8].
Thus, the incongruence between the experimental data of the conducted tests and the numerical evaluations could be addressed to this aspect.
Thus, experimental data are used to determine the material parameters.

This paper details the test data obtained from three different compositions of Ti6Al4V-ELI at 20 K, which enables the usage of this material for temperatures lower than 77 K (-196 °C) upto 20 K.
The tensile property data in table 3 shows that there is a close relation between interstitial content and the ductility of the alloys, which is most important at cryogenic temperatures for any structural use.
In a tensile test, ductility is measured as % elongation or % reduction in area Because the elongation is not uniform over the entire gage length and is greatest at the center of the neck, the percent elongation is not an absolute measure of ductility.
The reduction in area, being measured at the minimum diameter of the neck, is a better indicator of ductility.
Fig.4 Microstructure of Alloy 1, at 200X In the present study, the Alloy1 with lowest interstitial content has given the highest tensile ductility in the form of reduction in area.