Three-dimensional analysis of bat flight paths around small wind turbines suggests no major collision risk or behavioral changes

2021 ◽  
Author(s):  
Klaus Hochradel ◽  
Stefanie Hartmann ◽  
Hendrik Reers ◽  
Bruntje Luedtke ◽  
Horst Schauer-Weisshahn ◽  
...  
Keyword(s):  
Dimensional Analysis ◽  
Wind Turbines ◽  
Three Dimensional ◽  
Behavioral Changes ◽  
Collision Risk ◽  
Small Wind Turbines

In situ investigation of the primary recrystallization of alpha titanium in HVEM

1978 ◽  
Vol 36 (1) ◽  
pp. 634-635
Author(s):  
S. Naka ◽  
R. Penelle ◽  
R. Valle
Keyword(s):  
Dimensional Analysis ◽  
Texture Evolution ◽  
Cold Work ◽  
Three Dimensional ◽  
Primary Recrystallization ◽  
Thin Foils ◽  
In Situ Investigation ◽  
Grain Growth Model ◽  
Alpha Titanium

The in situ experimentation technique in HVEM seems to be particularly suitable to clarify the processes involved in recrystallization. The material under investigation was unidirectionally cold-rolled titanium of commercial purity. The problem was approached in two different ways. The three-dimensional analysis of textures was used to describe the texture evolution during the primary recrystallization. Observations of bulk-annealed specimens or thin foils annealed in the microscope were also made in order to provide information concerning the mechanisms involved in the formation of new grains. In contrast to the already published work on titanium, this investigation takes into consideration different values of the cold-work ratio, the temperature and the annealing time.Two different models are commonly used to explain the recrystallization textures i.e. the selective grain growth model (Beck) or the oriented nucleation model (Burgers). The three-dimensional analysis of both the rolling and recrystallization textures was performed to identify the mechanismsl involved in the recrystallization of titanium.

Development of a Quality Management System for Electric Power applied to Small Wind Turbines

2012 ◽  
pp. 1083-1088
Author(s):  
O.H. Ando Junior ◽  
M.O. Oliveira ◽  
J.M. Neto ◽  
A.D. Spacek ◽  
R.C.B. Leborgne ◽  
...  
Keyword(s):  
Quality Management ◽  
Electric Power ◽  
Wind Turbines ◽  
Management System ◽  
Quality Management System ◽  
Small Wind Turbines

COMPARATIVE ANALYSIS OF TWO AIRFOILS FOR POSSIBLE UTILIZATION IN SMALL WIND TURBINES

2019 ◽  
Author(s):  
Pedro Baracat ◽  
Célia Rosolen ◽  
Raquel Miguez de Carvalho ◽  
Kamal Ismail ◽  
Willian Okita ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Wind Turbines ◽  
Small Wind Turbines
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