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Online since: March 2014
Authors: Jim C. Newman Junior, Chun H. Wang, Kevin Walker
Load reduction was used to determine threshold characteristics, and in each case, after determining the threshold data, the mid-upper portion of the stress intensity factor range (ΔK) versus crack growth rate relation was then determined.
A baseline ΔKeff relation was determined in part using compliance based measured crack opening data.
These data provided the basis for development of the combined plasticity and roughness modelling approach detailed in this paper.
The results are compared in Figure 4 with the measured data from [15].
As shown in Figure 4, that raised the crack opening such that it was closer to the measured data.
Online since: July 2011
Authors: Ze Fu Bao, Chun Yan Wu, Xiao Qing Kang, Wen Sun, Yan Ping Sun
The data uniformity, the security, the trackability cannot obtain the guarantee.
The CAPP system carries on the technological analysis or the official design according to the CAD transmission's data nature either the external cooperation data.After the CAPP design had ended, carries on the work clothes jig design, the CAM simulates the data transfer to the downstream, carries on the data appraisal, and decids that the process flows: The feedback makes the revision for the CAD system; The feedback makes the revision for the CAPP system; The concurrent design is carries on under the concurrent design logical process control, obtains the feedback information unceasingly from the design activity, between the function group the intercoordination, realizes the product development design in the tendency, achieves the optimization plan, the reduction product leaving the plant time goal.
The concurrent design causes the overall system under the process control to carry on under the unified computerization environment, flow control system data direction, and to control the data pre-issue, the issue and the product data's change.
The enterprise production process makes up by many incident cross-correlation duty unit constitutions, has some specific job requirement specific post in each duty unit, to have certain work experience's personnel to complete, has the specific type data in the specific stage, some situations were only then obtain this stage data in the formerly data foundation after processing.
It has realized the data centralized management, has achieved the correct data, transmited the correct person through the correct way.
Online since: May 2015
Authors: Yi Lung Yeh, Shu Rong Yang
Introduction This study utilizes GIS to perform a map overlay analysis of the data provided by various agencies.
In the past, relevant domestic and international studies have used geologic hazard investigation and environmental geology data sets to construct a data set and utilized remote sensing and image interpretation and field investigation methods to provide a foundation for landslide susceptibility assessments [1-3].
Resultantly, this study utilizes remote sensing and image interpretation techniques, obtains data immeasurable from the remote sensing images.
Once the slopeland village geolgoic hazard data has been collected, the geolgoic hazard data set can be expanded, and this result can be used as a future disaster prevention reference.
All slopeland village data was analyzed using GIS and geologic hazard tables were constructed.
Online since: February 2019
Authors: Sergey O. Nepryakhin, Arkady M. Mikhailenko, Danil L. Shvarts
After such preparatory actions all the initial information about the geometry of the strip and the groove necessary for computer calculation can be represented in the form of one one-dimensional and two two-dimensional data arrays.
A one-dimensional array should include the following data: distance from the axis of the top roll to the origin (in the drawing of the groove R'); interaxle distance of rollers D for this rolling stand; the number of node points of the skeletons of contours for the workpiece Nз and the groove Nk; the coordinates of the origin of the workpiece in the coordinate system of the yk and zk groove, determined, for example, by the position of the in-coming roller guide of the rolling stand.
We define the equations of these segments and the limits of their applicability from the data available in the arrays described above.
With this division, in sectors of type 4, the strip is directly compressed by rollers, and in sectors of types 1-3, there is no direct reduction of the strip by rollers.
- Extraction - reduction of the SCS area due to its reduction by rolls and the movement of a part of this metal in the direction of the 0X axis.
Online since: September 2012
Authors: Sze Hsien Low, Gih Keong Lau
From the logged extension and resistance data, the change in resistance across the electrode with respect to an increase in strain was determined.
These micro-cracks would most likely cause a reduction in the electrodes’ stiffness, as compared to an un-cracked silver film, thereby allowing larger actuated strains.
Apart from the micro-cracks being beneficial to DEA performance due to a reduction in the electrode’s planar stiffness, the micro-cracked electrodes appear to be stable.
Online since: December 2012
Authors: Ming Hwa R. Jen, Che Kai Chang, Jing Guan Chen, Bo Cyuan Lin
Then, the samples were due to static tensile tests at room temperature to measure their residual ultimate strength and longitudinal stiffness as the base-line data for constant stress amplitude tension-tension cyclic tests.
However, beyond a certain threshold velocity, i.e., v≥25m/s, the use of tough matrix materials may result in more laminate tensile and flexural strength reduction than that of brittle matrix materials.
They were very close to the measured data, such as, 1531.1±83.7μm for diameter and 26.6±3.4μm in depth for 1m free drop and 1721.4±54.4μm and38.9±2.1μm for 2m drop.
Although the area of impacted surface due to 2m drop is greater than that of 1m drop, the reduction of mechanical properties of former samples is not significant.
The numerical results were in good agreement with empirical data.
Online since: July 2015
Authors: Archimede Forcellese, Michela Simoncini, Edoardo Mancini, Dario Amodio, Marco Sasso
The Johnson-Cook viscoplastic model wad also used to fit the experimental data with an optimum matching.
The frames acquired by Fastcam at the instant of failure are also reported; measuring the diameter reduction from these images, the effective failure strain can be evaluated.
The results are shown in Fig. 6; it is confirmed that the ductility at state T6 has a certain reduction with higher strain rate, while it even increases for the O state
Here, the data obtained from compression tests have been used to evaluate the parameters of the Johnson-Cook’s model, excluding the m coefficient since the temperature increase was considered negligible.
Cook, A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures, Int.
Online since: April 2012
Authors: K.A. Zakaria, Mariyam Jameelah Ghazali, S. Abdullah, C.H. Azhari
Constant amplitude loading (CAL), high to low and low to high spectrum loadings were then derived from the VAL obtained from the data capturing process to study the fatigue behaviour that subjected to spectrum loadings at the room and elevated temperatures.
These loads were derived from the VAL data history which collected from the engine mounting bracket of a 1300 cc car while travelling on the residential area road surface.
A strain gauge was mounted on the top of engine mounting bracket and was then connected to strain data acquisition system.
Fig. 3: An original strain signal collected at the residential area road surface CAL high to low low to high Fig. 4: Spectrum loadings of different sequences used for the tests Results and Discussion Fig. 5 shows the effect of elevated temperatures on the fatigue lives for the each type of spectrum loadings indicating the reduction of fatigue lives with the temperature increases.
Relative elements present in laboratory air absorbed onto the surface cause embrittlement of the grain boundary, which contributes to the reduction in fatigue resistance experienced at the elevated temperatures [11].
Online since: June 2014
Authors: Supawat Vivanpatarakij, Jorayuth Mosaleeyanont
This report presents the results of a comparison of standing losses between actual data with calculation data in the fuel tanks of various sizes (using 2013 data from diameter 5 to 50 meter).
But the IFRT, the calculated evaporation data is not close to the emission actual data.
The collections of tanks data (diameter, high or etc.) from PTT tanks calibration data to use for emission evaluate from Tank 4.0d software [8].
IFRT emission actual data and evaluated emission.
Comparison between Ethanol IFRT emission actual data and evaluated emission. emission actual data and evaluated emission.
Online since: June 2015
Authors: Masayuki Tsukagoshi, Takao Ueda, Keiji Miyata
While the potential values of II EX and IV EX show wide variation and the measured data at 20 degrees Celsius reach the non-corrosion range.
Most of the polarization resistance data measured at 40 degrees Celsius are less than 50 kΩ・cm² and the difference among data becomes small.
When the measurement is made at 20 degrees Celsius, the polarization resistance data measured by the rectangular wave electric current polarization method don’t significantly vary with the change in Cl- content in concrete, but the data measured by the AC impedance method tend to decrease with the increase of premixed Cl- content in concrete.
Fig. 9 Correlation of data of polarization resistance measured by different methods Relationship between data of the polarization resistance measured by the rectangular wave electric current polarization method and those by the AC impedance method is shown in Fig. 9.
Especially, regarding the data over 100kΩ ・ cm2 by the AC impedance method, the correlation of the data by two methods doesn’t clear.
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