Streaming potential/current measurement system for investigation of liquids confined in extended-nanospace

Lab on a Chip ◽  
2010 ◽  
Vol 10 (7) ◽  
pp. 871 ◽  
Author(s):  
Kyojiro Morikawa ◽  
Kazuma Mawatari ◽  
Masaru Kato ◽  
Takehiko Tsukahara ◽  
Takehiko Kitamori
Keyword(s):  
Measurement System ◽  
Streaming Potential ◽  
Current Measurement ◽  
Extended Nanospace

Analysis of Eddy-Current Measurement System for Residual Stress Assessment in Stainless Steel Grade 304

2015 ◽  
Vol 659 ◽  
pp. 623-627 ◽  
Author(s):  
Cherdpong Jomdecha ◽  
Isaratat Phung-On
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Eddy Current ◽  
Measurement System ◽  
System Analysis ◽  
Stress Measurement ◽  
Steel Grade ◽  
Current Measurement ◽  
Residual Stress Measurement ◽  
Stress Assessment

The objective of this paper is an analysis of statistical discreteness and measurement capability of an eddy-current measurement system for residual stress assessment in stainless steel Grade 304 (SS304). Cylindrical specimens with 50 mm in diameter and 12 mm thickness were prepared to generate residual stress by Resistance Spot Welding at which the welding currents were set at 12, 14, and 16 kA. The eddy-current measurement system was including a probe with frequency range of 0.1 to 3 MHz and an eddy current flaw detector. They were performed by contacting the probe on the specimen. The measurements were performed particularly in the vicinity of heat affected zone (HAZ). In order to determine the results of the residual stress measurement, the calibration curves between static tensile stress and eddy current impedance at various frequencies were accomplished. The Measurement System Analysis (MSA) was utilized to evaluate the changed eddy-current probe impedance from residual stress. The results showed that using eddy current technique at 1 MHz for residual stress measurement was the most efficient. It can be achieved the Gauge Repeatability & Reproducibility %GR&R at 16.61479 and Number of Distinct Categories (NDC) at 8. As applied on actual butt welded joint, it could yield the uncertainty of ± 58 MPa at 95 % (UISO).

Metrological Analysis of an Ion Current Measurement System

2021 ◽  
Author(s):  
Gabriel Gruber ◽  
Markus Neumayer ◽  
Thomas Bretterklieber ◽  
Hannes Wegleiter
Keyword(s):  
Measurement System ◽  
Current Measurement ◽  
Ion Current ◽  
Metrological Analysis

Bunch current measurement system for BEPCⅡ storage ring

2014 ◽  
Vol 26 (7) ◽  
pp. 75101
Author(s):  
邓庆勇 Deng Qingyong ◽  
曹建社 Cao Jianshe ◽  
叶强 Ye Qiang ◽  
岳军会 Yue Junhui ◽  
张丛 Zhang Cong ◽  
...  
Keyword(s):  
Storage Ring ◽  
Measurement System ◽  
Current Measurement

Enhancements to the NOAA Current Measurement System on US Coast Guard Navigation Buoys

OCEANS 2006 ◽  
2006 ◽  
Author(s):  
Kathryn Bosley ◽  
Chris McGrath ◽  
Tammy Graff ◽  
John Stepnowski
Keyword(s):  
Measurement System ◽  
Current Measurement ◽  
Coast Guard ◽  
Us Coast Guard

scholarly journals Three channel high dynamic current measurement system for low power systems

2018 ◽  
Vol 1052 ◽  
pp. 012059 ◽  
Author(s):  
S Heller ◽  
I Nematollahi ◽  
S Koeble ◽  
P Woias
Keyword(s):  
Power Systems ◽  
Low Power ◽  
Measurement System ◽  
Current Measurement ◽  
High Dynamic

Replacing a current measurement system in an inspection scheme: A case study

2019 ◽  
Vol 31 (4) ◽  
pp. 615-626
Author(s):  
Stefan H. Steiner ◽  
Nathaniel T. Stevens ◽  
Willis A. Jensen ◽  
R. Jock MacKay
Keyword(s):  
Measurement System ◽  
Current Measurement ◽  
A Current

Dielectric Constant of Liquids Confined in the Extended Nanospace Measured by a Streaming Potential Method

2015 ◽  
Vol 87 (3) ◽  
pp. 1475-1479 ◽  
Author(s):  
Kyojiro Morikawa ◽  
Yutaka Kazoe ◽  
Kazuma Mawatari ◽  
Takehiko Tsukahara ◽  
Takehiko Kitamori
Keyword(s):  
Dielectric Constant ◽  
Streaming Potential ◽  
Potential Method ◽  
Extended Nanospace
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