scholarly journals Design and development of high load Brinell hardness standard machine at UME

ACTA IMEKO ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 226
Author(s):  
C. Kuzu ◽  
E. Pelit
Keyword(s):  
Brinell Hardness ◽  
High Load ◽  
National Metrology Institute ◽  
Successful Implementation ◽  
Dead Weight ◽  
Application System ◽  
Funded Project ◽  
One Machine ◽  
Republic Of Turkey ◽  
Weight Force

After successful implementation of two hardness standardizing machines at TSE (Turkish Standards Institution) in Rockwell and Brinell-Vickers hardness scales separately and deciding to combine them in one machine with a newer design and install it in Hardness Laboratory of UME (National Metrology Institute of Republic of Turkey) it was planned to design and develop a deadweight type Brinell Hardness standard machine at UME for high load scales within the scope of an internally funded project. In this paper the design of High Load Brinell Hardness Standard Machine with dead weight force application system realized by UME Hardness Laboratory is explained.

scholarly journals A new design of Rockwell-Brinell-Vickers hardness standard machine at UME

ACTA IMEKO ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 230
Author(s):  
C. Kuzu ◽  
E. Pelit ◽  
I. Meral
Keyword(s):  
Vickers Hardness ◽  
Laser Interferometer ◽  
Measurement Unit ◽  
National Metrology Institute ◽  
Successful Implementation ◽  
Rockwell Hardness ◽  
Depth Measurement ◽  
Funded Project ◽  
One Machine ◽  
Republic Of Turkey

After successful implementation of two hardness standardizing machines at TSE (Turkish Standards Institution) in Rockwell and Brinell-Vickers hardness scales separately, it became unavoidable to combine them in one machine with a newer design and install it in Hardness Laboratory of UME (National Metrology Institute of Republic of Turkey) within the scope of an internally funded project. In this paper the new design of the Rockwell-Brinell- Vickers hardness standard machine with deadweight force application principle and a laser interferometer optic system as depth measurement unit for Rockwell Hardness scales designed by UME Hardness Laboratory is explained.

10 kw Vertical Axis Wind Turbine Spindle Design and Optimization

2014 ◽  
Vol 487 ◽  
pp. 429-434 ◽  
Author(s):  
Qiao Mei Li ◽  
Yang Cao ◽  
Guo Qing Wu ◽  
Xing Hua Chen ◽  
Yan Hua Cao
Keyword(s):  
Wind Turbine ◽  
Vibration Mode ◽  
Vertical Axis ◽  
Element Model ◽  
High Load ◽  
Design Parameters ◽  
Vertical Axis Wind Turbine ◽  
Dead Weight ◽  
Design And Optimization ◽  
The Finite Element Model

The spindle of a 10 kw vertical axis wind turbine is designed in this paper, and the relevant geometric parameters is given, and build the geometry of the finite element model. Calculation of the spindle under wind load and dead weight , and analyse the spindle Von Mess stress, deformation nephogram, and give the former six order vibration mode of the spindle. Through the analysis, Then the design parameters of the spindle are optimized. and the optimized structure of spindle has been got. optimized spindle is in lower quality, more satisfy the requirement of wind turbine running under high load at the same time .

Local Adaptations of Generic Application Systems: The Case of Veiling Holambra in Brazil

2006 ◽  
Vol 21 (2) ◽  
pp. 73-85 ◽  
Author(s):  
Marlei Pozzebon ◽  
Eric van Heck
Keyword(s):  
Information Technologies ◽  
Business Processes ◽  
Mutual Influence ◽  
Successful Implementation ◽  
Application System ◽  
Local Conditions ◽  
Local Adaptations ◽  
Application Systems ◽  
Historically Situated ◽  
Brazilian Culture

This paper focuses on local adaptations, referring to the significant or subtle changes local firms make in their local business processes and rules in order to fit with a generic application system, and to the changes they make in the features of a generic application system. Local adaptations are therefore bidirectional in nature. Although several studies stress the importance of local adaptations for the overall success of information technologies (IT) used across locations, more research is needed regarding what kind of local adaptations are required for a particular generic application system to work well in particular localities. The nature and extent of local adaptations are still poorly understood. This paper provides a concrete illustration of a historically situated local adaptation: the case of Veiling Holambra. This Brazilian cooperative has imported a generic auction marketplace model from Holland and adapted it to local conditions, to succeed in a globalized and competitive flower market. Using concepts drawn from studies on globalization, cross-cultural implementations, and IT-based organizational change literature, we put forward three propositions that help to explain the success of local adaptations. The results of our case study indicate that the immigration of Dutch people was critical for bringing knowledge of cooperative structure and flower production to Holambra and led to a relatively small design-use gap. The ability to take local, contextual requirements into account without neglecting the ‘generic’ knowledge led to the successful implementation of the generic auction model. This mutual influence was particularly enabled by the Brazilian culture of improvization.

Design of the Next Generation Antenna Mounts

2015 ◽  
Author(s):  
Ruben Gregory Puthota Dominic Savio ◽  
Betsegaw Gebrehiwot ◽  
Dereje Agonafer ◽  
Al Skrepcinski ◽  
Tom Palmer
Keyword(s):  
High Load ◽  
Wind Pressure ◽  
Frame Structure ◽  
Load Carrying Capacity ◽  
Projected Area ◽  
Dead Weight ◽  
Load Carrying ◽  
Preliminary Stress ◽  
Stress And Deformation ◽  
Future Work

Design of new antenna mount with low effective projected area (EPA) and high load carrying capacity for telecommunication towers is discussed in this paper. The main aim is to reduce the EPA of the mount against the wind pressure direction at the desired elevation from ground by reducing the mount frame structure parts compared to the previous mount designs used in the market. The model in itself has to withstand its dead weight, operator’s weight along with five antenna-radio units. The new model has been designed with a single horizontal frame and four supporting structure for EPA reduction and also the EPA is calculated through Image Processing using MATLAB tool which has not been done previously for mounting structures in the telecommunication field. The preliminary stress and deformation results calculated using ANSYS 15.0 tool and future work that has to be carried out for the design are also discussed in this paper.

Development and performance evaluation of a dead weight force machine in 2–50N range

MAPAN ◽  
2009 ◽  
Vol 24 (4) ◽  
pp. 225-232 ◽  
Author(s):  
S. S. K. Titus ◽  
S. K. Dhulkhe ◽  
Poonam Yadav ◽  
Kamlesh K. Jain
Keyword(s):  
Performance Evaluation ◽  
Dead Weight ◽  
And Performance ◽  
Weight Force

Automation and Upgrade of the NIST 27.1 kN (6.1 klbf) Dead Weight Force Machine

NCSLI Measure ◽  
2007 ◽  
Vol 2 (1) ◽  
pp. 26-29
Author(s):  
Kevin Chesnutwood ◽  
Samuel Ho
Keyword(s):  
Dead Weight ◽  
Weight Force

DEVELOPMENT OF A NEW SMALL-RATED-CAPACITY REFERENCE TORQUE WRENCH

2013 ◽  
Vol 24 ◽  
pp. 1360023 ◽  
Author(s):  
ATSUHIRO NISHINO ◽  
KOJI OGUSHI ◽  
KAZUNAGA UEDA
Keyword(s):  
Calibration Method ◽  
High Accuracy ◽  
National Metrology Institute ◽  
Coverage Factor ◽  
Expanded Uncertainty ◽  
Dead Weight ◽  
Traceability System ◽  
Measuring Devices ◽  
Torque Wrench ◽  
Japanese Industry

It is imperative that torque standard of small rated capacity is established and disseminated throughout Japanese industry. A 10 N·m dead weight torque standard machine (10-N·m-DWTSM) has been developed and evaluated at the National Metrology Institute of Japan (NMIJ), part of the National Institute of Advanced Industrial Science and Technology (AIST). By 2012, the relative expanded uncertainty of torque realized by the 10-N·m-DWTSM was estimated to be 6.6 × 10−5, with the coverage factor k begin equal to 2, in a range from 0.1 N·m to 10 N·m for calibrations of the torque measuring devices (TMDs). Calibration service for small-rated-capacity TMDs was started to disseminate the torque standard throughout Japanese industry. Here, there are two routes in the torque traceability system in Japan. One is the route for TMDs and the other one is the route for reference torque wrenches (RTWs). The torque standard in the form of RTWs has been disseminated in the range from 5 N·m to 5 kN·m by using the TSMs owned by NMIJ. There remains a strong demand to expand the calibration range of RTWs. To expand the range, we should develop the new high-accuracy small-rated-capacity RTW and evaluate its calibration method. In this study, a high-accuracy RTW (TP-5N-1109), which had a rated capacity of 5 N·m, was newly developed and calibrated with the 10-N·m-DWTSM to evaluate its characteristics. The ordinary calibration procedures adopted at NMIJ was investigated whether it was applicable to the small-rated-capacity RTWs. As a result, the TP-5N-1109 showed good performance in the creep testing, and its characteristic curves were draw for all cases of the calibration procedures. The repeatability in the calibration results was good. We clarified the problem with the calibration conditions of the small-rated-capacity RTW to calibrate it by three cases.

Eccentric Loading Condition Analysis of 1MN Dead Weight Force Standard Machine

2014 ◽  
Vol 1077 ◽  
pp. 149-153
Author(s):  
Li Juan Yu ◽  
Gao Fei Li ◽  
Tao Lei ◽  
Xiao Bo Chen
Keyword(s):  
Computer Technology ◽  
Rapid Development ◽  
Power Source ◽  
Numerical Control ◽  
Strength Measurement ◽  
Dead Weight ◽  
National Economic ◽  
National Economic Development ◽  
Weight Force ◽  
Machine Strength

With the development of science and technology , the position of the strength measurement[1] in national economic development is more and more important, In recent years, along with the computer technology, electronic technology and the development of numerical control technology, force standard machine also obtained the rapid development[2-6],dead weight force standard machine strength measuring accuracy is the highest power source device by far, in the process of weight loading, considering the axial load affect the performance of the whole machine and in order to guarantee the machine safe and reliable, it is necessary to eccentric loading conditions for mechanical properties analysis.

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