Evaluation of a modified hsCRP method for point-of-service testing

2003 ◽  
Vol 334 (1-2) ◽  
pp. 249-252 ◽  
Author(s):  
Anders Larsson ◽  
Lars-Olof Hansson
Keyword(s):  
Service Testing ◽  
Point Of Service

scholarly journals Comparative Study for the Prediction of Cavitating Flow inside a Square-Edged Orifice using Different Commercial CFD Software

2019 ◽  
Vol 128 ◽  
pp. 06003
Author(s):  
Gong-Hee Lee ◽  
June-Ho Bae
Keyword(s):  
Structural Damage ◽  
Nuclear Power ◽  
Cavitating Flow ◽  
Regulatory Body ◽  
Reactor Operation ◽  
Flow Acceleration ◽  
Service Testing ◽  
Ansys Cfx ◽  
Rapid Flow ◽  
Computational Fluid Dynamics Cfd

Nuclear power plant operators conduct in-service testing (IST) to verify the safety functions of safety–related pumps and valves and to monitor the degree of vulnerability over time during reactor operation. The system to which the pump and valve to be tested are installed has various sizes of orificesfor flow control and decompression. Rapid flow acceleration and accompanying pressure drop may cause cavitation inside the orifice, which may result in orifice degradation and structural damage. Though licensing applications supported by using Computational Fluid Dynamics (CFD) software are gradually increasing for IST–related problems, there is no CFD software which obtains a licensing from the domestic regulatory body until now. In this paper, to assess the prediction performance of different commercialCFD software for the analysis of cavitating flow inside a square–edged orifice, the simulation was conducted with ANSYS CFX and FLUENT R18.1. The results predicted were then compared with the measured data.

Estimation of bridge static response and vehicle weights by frequency response analysis

1998 ◽  
Vol 25 (4) ◽  
pp. 631-639 ◽  
Author(s):  
G Thater ◽  
P Chang ◽  
D R Schelling ◽  
C C Fu
Keyword(s):  
Dynamic Effect ◽  
Dynamic Responses ◽  
Response Analysis ◽  
Static Response ◽  
Actual Weight ◽  
Service Testing ◽  
Weigh In Motion ◽  
Moving Vehicles ◽  
Bridge Structures ◽  
Truck Weight

A methodology is developed to more accurately estimate the static response of bridges due to moving vehicles. The method can also be used to predict dynamic responses induced by moving vehicles using weigh-in-motion (WIM) techniques. Historically, WIM is a well-developed technology used in highway research, since it has the advantage of allowing for the stealthy automatic collection of weight data for heavy trucks. However, the lack of accuracy in determining the dynamic effect in bridges has limited the potential for its use in estimating the fatigue life of bridge structures and their components. The method developed herein amends the current WIM procedures by filtering the dynamic responses accurately using the Fast Fourier Transform (FFT). Example applications of the proposed method are shown by using computer-generated data. The method is fast and improves the predicted truck weight up to 5% of the actual weight, as compared to errors up to 10% using the current WIM methods.Key words: weigh-in-motion, digital filters, FFT, bridge dynamics, in-service testing.

A Method of Obtaining Detailed Freight Car Truck Loading Data

1980 ◽  
Vol 102 (2) ◽  
pp. 151-158
Author(s):  
C. P. Spencer ◽  
T. L. Pitchford
Keyword(s):  
Load Cell ◽  
Vertical Load ◽  
Car Body ◽  
Service Testing ◽  
Sample Data ◽  
Actual Service ◽  
Truck Loading ◽  
Freight Car

A method of obtaining freight car truck loading data utilizing a strain gaged truck bolster as a load cell is described. Analysis necessary to derive both the magnitude and location of the line of action of the freight car body vertical load resultant is presented. Techniques for cycle counting applicable to fatigue studies are suggested. Sample data from actual service testing are presented.

Diagnostic and In-Service Testing of Transit Railway Bridge

2001 ◽  
Vol 1770 (1) ◽  
pp. 51-57 ◽  
Author(s):  
Michael J. Chajes ◽  
Harry W. Shenton ◽  
William W. Finch
Keyword(s):  
Railway Bridge ◽  
Service Testing

scholarly journals REST service testing based on inferred XML schemas

2014 ◽  
Vol 6 (2) ◽  
pp. 6
Author(s):  
Alvaro Navas ◽  
Pedro Capelastegui ◽  
Francisco Huertas ◽  
Pablo Alonso-Rodriguez ◽  
Juan C. Dueñas
Keyword(s):  
Service Testing ◽  
Rest Service

Corrosion Measuring Probes for Marine Applications

CORROSION ◽  
1961 ◽  
Vol 17 (10) ◽  
pp. 485t-491t ◽  
Author(s):  
DAVID ROLLER ◽  
WILLARD R. SCOTT ◽  
HERMAN S. PREISER ◽  
FRANK E. COOK
Keyword(s):  
Electrical Resistance ◽  
Structural Members ◽  
Condenser Tube ◽  
Exterior Surface ◽  
Preliminary Testing ◽  
Resistance Method ◽  
Service Testing ◽  
Inlet Tube ◽  
Actual Operation ◽  
Marine Applications

Abstract This paper describes the design, fabrication and preliminary testing of several types of corrosion measuring probes developed for use on maritime vessels. The probes are part of a system utilizing the electrical resistance method for continuously monitoring corrosion during actual operation. One type of probe to be described is intended for monitoring corrosion on either the exterior surface of the hull or interior structural members in large compartment. Another probe has been developed for measuring condenser tube inlet (tube end) corrosion. A third probe has been developed for measuring corrosion in crevices and pipe lines. Both laboratory and simulated service testing has been carried out. Results of these tests and the effectiveness of the probes in measuring corrosive conditions on ships are discussed. 2.4.2

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