ULTRASONIC ATTENUATION IN METALS DEFORMING AT HIGH RATES OF STRAIN : DATA ANALYSIS BY USING A KINETIC MODEL OF DISLOCATION LOOPS

1987 ◽  
Vol 48 (C8) ◽  
pp. C8-197-C8-202
Author(s):  
J. SHIOIRI ◽  
K. SAKINO
Keyword(s):  
Data Analysis ◽  
Kinetic Model ◽  
Ultrasonic Attenuation ◽  
Dislocation Loops ◽  
Strain Data

Modeling relationships for field strain data under thermal effects using functional data analysis

Measurement ◽  
2021 ◽  
Vol 177 ◽  
pp. 109279
Author(s):  
Huachen Jiang ◽  
Chunfeng Wan ◽  
Kang Yang ◽  
Youliang Ding ◽  
Songtao Xue
Keyword(s):  
Data Analysis ◽  
Functional Data Analysis ◽  
Functional Data ◽  
Thermal Effects ◽  
Field Strain ◽  
Strain Data

scholarly journals Automatic Collection of Tilt and Strain Data from Tabular Icebergs

1983 ◽  
Vol 4 ◽  
pp. 147-151 ◽  
Author(s):  
Monica Kristensen ◽  
Vernon A. Squire
Keyword(s):  
Data Analysis ◽  
Data Collection ◽  
Data Sampling ◽  
Automatic Data ◽  
Ice Drift ◽  
Strain Data ◽  
Automatic Data Collection ◽  
Future Data ◽  
Sampling Regime ◽  
Sea Ice Drift

Drift tracks of Antarctic tabular icebergs have been studied by means of satellite-tracked buoys since the early 1970s. More recently, a growing interest in the possibility of using Antarctic icebergs to supply fresh water to arid areas has made resources available for more sophisticated experiments, and in 1978 three prototype stations were designed to measure interactions between tabular icebergs and the ocean. These stations were deployed in late 1979, and in early 1981.The purpose of this paper is, firstly, to communicate some of our experiences with an earlier type of automatic data collection platform, and, secondly, to show that the substantial amount of tilt and strain data available from this station is unsuitable for data analysis. We discuss aspects of the data collected by the first of the three automatic stations, paying particular attention to the quality of the recorded strain and tilt data. It is shown that an unfortunate choice of instrument sensitivity and range severely limits the usefulness of the collected data, and that limitations in the data sampling regime make data analysis by conventional statistical methods very difficult. Several changes are proposed for the design of future data collection platforms for tabular icebergs, and some suggestions are made about data sampling. As this paper only concerns iceberg research, we do not discuss investigations of sea-ice drift made in the same area.

Methods for kinetic analysis of simultaneous, first-order reactions in waters: The kinetic model and methods for data analysis

1994 ◽  
Vol 288 (3) ◽  
pp. 131-139 ◽  
Author(s):  
Yanjia Lu ◽  
C.L. Chakrabarti ◽  
M.H. Back ◽  
D.C. Grégoire ◽  
W.H. Schroeder ◽  
...  
Keyword(s):  
Data Analysis ◽  
Kinetic Model ◽  
Kinetic Analysis ◽  
First Order

Study of Complex Reactions under Rapid Deactivation -- Improvements in the Reaction Equipment and in the Methodology for Kinetic Calculation

2007 ◽  
Vol 5 (1) ◽  
Author(s):  
Diana Mier ◽  
Andrés Tomás Aguayo ◽  
Alaitz Atutxa ◽  
Ana G Gayubo ◽  
Javier Bilbao
Keyword(s):  
Data Analysis ◽  
Kinetic Equation ◽  
Kinetic Model ◽  
Technological Development ◽  
Kinetic Modelling ◽  
Past History ◽  
Accurate Determination ◽  
Process Conditions ◽  
Product Analysis ◽  
Simulation And Optimization

The technological development of catalytic processes under rapid deactivation requires the rigorous calculation of the deactivation kinetic equation in order to be useful in the simulation and optimization of industrial processes. Accordingly, suitable equipment for reaction and product analysis and a rigorous methodology for kinetic data analysis are required. These aspects are approached in this paper using the transformation of methanol into olefins on a SAPO-18 as the model reaction. In this reaction, deactivation is rapid and there is also an initiation period depending on process conditions. The correct use of gas chromatography allows for improving the collection of experimental data of composition with time-on-stream, given that, on the one hand, it minimizes the time required for analysis (4 min), and on the other, a better homogenization of the reaction product sample is achieved, which allows for a more accurate determination of the composition corresponding to a given time-on-stream. Furthermore, the rigorous kinetic modelling of deactivation requires a data analysis methodology that considers the past history of the catalyst and an activity to be defined based on a rigorous physical meaning. Accordingly, the concept of the integrated kinetic model has been used in this paper, whose basis is the calculation of kinetic parameters by simultaneously solving the zero time-on-stream kinetic model and the kinetic equation for deactivation.

scholarly journals AGC 2 Irradiation Creep Strain Data Analysis

2016 ◽  
Author(s):  
William E. Windes ◽  
David T. Rohrbaugh ◽  
W. David Swank
Keyword(s):  
Data Analysis ◽  
Creep Strain ◽  
Irradiation Creep ◽  
Strain Data

scholarly journals GW170817 event rules out general relativity in favor of vector gravity

2021 ◽  
Author(s):  
Anatoly A. Svidzinsky ◽  
Robert C. Hilborn
Keyword(s):  
General Relativity ◽  
Data Analysis ◽  
Gravitational Waves ◽  
Bayes Factor ◽  
Bayes Factors ◽  
Noise Filtering ◽  
Tensor Polarization ◽  
Binary Neutron Star ◽  
Strain Data ◽  
Vector Theory

AbstractThe observation of gravitational waves by the three LIGO-Virgo interferometers allows the examination of the polarization of gravitational waves. Here, we analyze the binary neutron star event GW170817, whose source location and distance are determined precisely by concurrent electromagnetic observations. We apply a signal accumulation procedure to the LIGO-Virgo strain data and find that the measured LIGO-Livingston signal is substantially reduced in certain frequency intervals due to real-time noise subtraction. We obtain ratios of the signals detected by the three interferometers excluding these “depleted” regions from the data analysis. We find that the signal ratios are inconsistent with the tensor polarization predictions of general relativity and Einstein’s theory is ruled out at 99% confidence level. Moreover, we find that the signal ratios and distance to the source are consistent with the vector theory of gravity (Phys Scr 92:125001, 2017) and that vector GW polarization is favored over tensor polarization and scalar polarization with exponentially large Bayes factors. If, however, we erroneously include in the data analysis the frequency regions in which the Livingston signal is depleted by noise filtering, we reproduce the result of the LIGO-Virgo collaboration favoring tensor GW polarization over vector polarization with an exponentially large Bayes factor.

scholarly journals Automatic Collection of Tilt and Strain Data from Tabular Icebergs

1983 ◽  
Vol 4 ◽  
pp. 147-151
Author(s):  
Monica Kristensen ◽  
Vernon A. Squire
Keyword(s):  
Data Analysis ◽  
Data Collection ◽  
Data Sampling ◽  
Automatic Data ◽  
Ice Drift ◽  
Strain Data ◽  
Automatic Data Collection ◽  
Future Data ◽  
Sampling Regime ◽  
Sea Ice Drift

Drift tracks of Antarctic tabular icebergs have been studied by means of satellite-tracked buoys since the early 1970s. More recently, a growing interest in the possibility of using Antarctic icebergs to supply fresh water to arid areas has made resources available for more sophisticated experiments, and in 1978 three prototype stations were designed to measure interactions between tabular icebergs and the ocean. These stations were deployed in late 1979, and in early 1981.The purpose of this paper is, firstly, to communicate some of our experiences with an earlier type of automatic data collection platform, and, secondly, to show that the substantial amount of tilt and strain data available from this station is unsuitable for data analysis. We discuss aspects of the data collected by the first of the three automatic stations, paying particular attention to the quality of the recorded strain and tilt data. It is shown that an unfortunate choice of instrument sensitivity and range severely limits the usefulness of the collected data, and that limitations in the data sampling regime make data analysis by conventional statistical methods very difficult. Several changes are proposed for the design of future data collection platforms for tabular icebergs, and some suggestions are made about data sampling. As this paper only concerns iceberg research, we do not discuss investigations of sea-ice drift made in the same area.

Evaluation of Reliability-based Fatigue Strain Data Analysis for an Automobile Suspension Under Various Road Condition

2018 ◽  
Vol 10 (5) ◽  
Author(s):  
Nadia Nurnajihah Mohamad Nasir ◽  
◽  
Shahrum Abdullah ◽  
Salvinder Singh Karam Singh ◽  
Sallehudin Mohd Haris ◽  
...  
Keyword(s):  
Data Analysis ◽  
Road Condition ◽  
Automobile Suspension ◽  
Strain Data
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