Calculation of the energy release in a gaseous control unit with a generalized, standard construction

1989 ◽  
Vol 66 (1) ◽  
pp. 66-69
Author(s):  
V. P. Sivokon'
Keyword(s):  
Energy Release ◽  
Control Unit ◽  
Standard Construction ◽  
Gaseous Control

Video-Enhanced Microscopy--Better Visibility of Plant Cell Structures

1982 ◽  
Vol 40 ◽  
pp. 182-185
Author(s):  
N.S. Allen ◽  
R.D. Allen
Keyword(s):  
Diffraction Pattern ◽  
Theoretical Basis ◽  
Numerical Aperture ◽  
Gain Control ◽  
Control Unit ◽  
Camera Control ◽  
Variable Gain ◽  
Contrast Method ◽  
Fine Detail ◽  
Cell Structures

Various methods of video-enhanced microscopy combine TV cameras with light microscopes creating images with improved resolution, contrast and visibility of fine detail, which can be recorded rapidly and relatively inexpensively. The AVEC (Allen Video-enhanced Contrast) method avoids polarizing rectifiers, since the microscope is operated at retardations of λ/9- λ/4, where no anomaly is seen in the Airy diffraction pattern. The iris diaphram is opened fully to match the numerical aperture of the condenser to that of the objective. Under these conditions, no image can be realized either by eye or photographically. Yet the image becomes visible using the Hamamatsu C-1000-01 binary camera, if the camera control unit is equipped with variable gain control and an offset knob (which sets a clamp voltage of a D.C. restoration circuit). The theoretical basis for these improvements has been described.

Reliability Study on Control Unit of Metro Train Auxiliary Inverter Based on Improved Monte Carlo Algorithm

CICTP 2017 ◽  
2018 ◽  
Author(s):  
Ying Ji ◽  
Xiaobo Li ◽  
Hao Wu ◽  
Pengfei Cai
Keyword(s):  
Monte Carlo ◽  
Control Unit ◽  
Monte Carlo Algorithm ◽  
Reliability Study

CHANGING THE SOFTWARE OF THE ELECTRONIC GASOLINE CAR ENGINE CONTROL UNIT FOR OPTIMUM PERFORMANCE ON LPG

2016 ◽  
Vol 26 (3) ◽  
pp. 325-335
Author(s):  
Dmitriy A. Galin ◽  
◽  
Pavel A. Ionov ◽  
Aleksey S. Nazarkin
Keyword(s):  
Control Unit ◽  
Engine Control Unit ◽  
Engine Control ◽  
Optimum Performance

On Choosing Modules for the Control Unit of Local Control Systems

2004 ◽  
Vol 62 (11) ◽  
pp. 953-960
Author(s):  
T. A. Piyavchenko
Keyword(s):  
Control Systems ◽  
Local Control ◽  
Control Unit

Calculating Energy Release Rate as a Function of Crack Length Using a Multiple-Step Crack Closure Technique in Tire Finite Element Models

2018 ◽  
Vol 46 (3) ◽  
pp. 130-152
Author(s):  
Dennis S. Kelliher
Keyword(s):  
Finite Element ◽  
Energy Release Rate ◽  
Crack Length ◽  
Energy Release ◽  
Crack Closure ◽  
Release Rate ◽  
Fatigue Behavior ◽  
Three Dimensions ◽  
Quantitative Prediction ◽  
Closure Technique

ABSTRACT When performing predictive durability analyses on tires using finite element methods, it is generally recognized that energy release rate (ERR) is the best measure by which to characterize the fatigue behavior of rubber. By addressing actual cracks in a simulation geometry, ERR provides a more appropriate durability criterion than the strain energy density (SED) of geometries without cracks. If determined as a function of crack length and loading history, and augmented with material crack growth properties, ERR allows for a quantitative prediction of fatigue life. Complications arise, however, from extra steps required to implement the calculation of ERR within the analysis process. This article presents an overview and some details of a method to perform such analyses. The method involves a preprocessing step that automates the creation of a ribbon crack within an axisymmetric-geometry finite element model at a predetermined location. After inflating and expanding to three dimensions to fully load the tire against a surface, full ribbon sections of the crack are then incrementally closed through multiple solution steps, finally achieving complete closure. A postprocessing step is developed to determine ERR as a function of crack length from this enforced crack closure technique. This includes an innovative approach to calculating ERR as the crack length approaches zero.

Effects of energy release on high-speed flows in an axisymmetric combustor

1989 ◽  
Author(s):  
K. KAILASANATH ◽  
J. GARDNER ◽  
E. ORAN ◽  
J. BORIS
Keyword(s):  
Energy Release ◽  
High Speed ◽  
High Speed Flows
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