Investigations on the dynamic behaviour of a wind pressure measuring system for full-scale measurement

1981 ◽  
Vol 7 (2) ◽  
pp. 129-134 ◽  
Author(s):  
Louis C.H. Lam
Keyword(s):  
Dynamic Behaviour ◽  
Full Scale ◽  
Wind Pressure ◽  
Measuring System

scholarly journals WIND PRESSURE RESISTANCE TEST FOR FULL SCALE PHOTOVOLTAIC SYSTEM USING HORIZONTAL TYPE LARGE AIR PRESSURE CHAMBER

2019 ◽  
Vol 25 (60) ◽  
pp. 621-624
Author(s):  
Yasuhiro MAEDA ◽  
Yoshihito OZAWA ◽  
Koji TAKAMORI ◽  
Naoto TAKEHANA ◽  
Yuta ONODE ◽  
...  
Keyword(s):  
Full Scale ◽  
Pressure Chamber ◽  
Air Pressure ◽  
Wind Pressure ◽  
Photovoltaic System ◽  
Resistance Test ◽  
Horizontal Type ◽  
Pressure Resistance

Pressure Measurements on Yacht Sails: Development of a new system for wind tunnel and full scale testing

2016 ◽  
Author(s):  
Fabio Fossati ◽  
Ilmas Bayati ◽  
Sara Muggiasca ◽  
Ambra Vandone ◽  
Gabriele Campanardi ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Unsteady Aerodynamics ◽  
Research Field ◽  
Full Scale ◽  
Measuring System ◽  
Windward Side ◽  
Pressure System ◽  
Operational Conditions ◽  
Sailing Yacht ◽  
Full Scale Testing

The paper presents an overview of a joint project developed among Politecnico di Milano, CSEM and North Sails, aiming at developing a new sail pressure measurement system based on MEMS sensors (an excellent compromise between size, performance, costs and operational conditions) and pressure strips and pads technology. These devices were designed and produced to give differential measurement between the leeward and windward side of the sails. The project has been developed within the Lecco Innovation Hub Sailing Yacht Lab, a 10 m length sailing dynamometer which intend to be the reference contemporary full scale measurement device in the sailing yacht engineering research field, to enhance the insight of sail steady and unsteady aerodynamics [1]. The pressure system is described in details as well as the data acquisition process and system metrological validation is provided; furthermore, some results obtained during a wind tunnel campaign carried out at Politecnico di Milano Wind Tunnel, as a benchmark of the whole measuring system for future full scale application, are reported and discussed in details. Moreover, the system configuration for full scale testing, which is still under development, is also described.

scholarly journals Experimental Complex for Assessing the Effect of Wear on the Temperature and Vibration of the Tool when Turning Metals

2021 ◽  
Vol 2131 (5) ◽  
pp. 052019
Author(s):  
Viktor Lapshin ◽  
Ilya Turkin ◽  
Stanislav Noda ◽  
Valera Golodze
Keyword(s):  
Numerical Experiments ◽  
Metal Cutting ◽  
High Efficiency ◽  
Vibrational Energy ◽  
Mutual Influence ◽  
Full Scale ◽  
Measuring System ◽  
Back Surface ◽  
Coordinate Changes ◽  
Cutting System

Abstract The work is devoted to the development of an experimental measuring complex designed for conducting experiments to assess the mutual influence of tool wear, temperature during cutting and vibration activity of the tool when turning metals on metal-cutting machines. In this paper, it is proposed to place three vibration transducer sensors on the tool holder itself, as well as to insert an artificial thermocouple inside the cutting plate. The introduction of the thermocouple is made in such a way that temperature measurements are made close to the back surface of the tool formed during cutting. The conducted studies have shown the high efficiency of the measuring system and the possibility of its use for the identification of mathematical models of the cutting system. Research methods full-scale and numerical experiments in which the Matlab package of mathematical programs was used for data processing and analysis. Results and discussion. The results of full-scale and numerical experiments are presented, in particular, graphs of coordinate changes describing tool deformation, and data sets are obtained that reflect the dependence of the vibrational energy of tool movements on the reaction time of the thermodynamic subsystem of the cutting system.

scholarly journals Full Scale Measurement of Wind Pressure on a Deck of a Concrete Cable-Stayed Bridge

1999 ◽  
Vol 24 (2) ◽  
pp. 79_245-79_257
Author(s):  
Yuji Niihara ◽  
Koji Hayashida ◽  
Ryuji Nakano ◽  
Yoshinobu Kubo
Keyword(s):  
Full Scale ◽  
Wind Pressure ◽  
Cable Stayed Bridge
Sign in / Sign up

Export Citation Format

Share Document