scholarly journals Simulation of thermographic responses of delaminations in composites with quadrupole method

2016 ◽  
Author(s):  
William P. Winfree ◽  
Joseph N. Zalameda ◽  
Patricia A. Howell ◽  
K. Elliott Cramer
Keyword(s):  
Quadrupole Method

scholarly journals Emittance measurements of the ACCEL K250 superconducting medical cyclotron at Paul Scherer institute

2006 ◽  
Vol 21 (1) ◽  
pp. 58-60
Author(s):  
Dragan Toprek
Keyword(s):  
Proton Beam ◽  
Beam Profile ◽  
Paul Scherrer Institute ◽  
Superconducting Cyclotron ◽  
Paul Scherrer ◽  
Quadrupole Method

The results of beam profile measurements of the proton beam of the ACCEL K250 superconducting cyclotron at the Paul Scherrer Institute are presented in this paper. Beam emittances in both horizontal and vertical planes are estimated by the varying quadrupole method.

Wideband measurement of shear induced birefringence by quadrupole method

2006 ◽  
Vol 77 (5) ◽  
pp. 054101 ◽  
Author(s):  
M. Hosoda ◽  
K. Horii ◽  
H. Nomura ◽  
K. Sakai
Keyword(s):  
Quadrupole Method

scholarly journals Time-Resolved Temperature Map Prediction of Concentration Photovoltaics Systems by Means of Coupled Ray Tracing Flux Analysis and Thermal Quadrupoles Modelling

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2042
Author(s):  
Alejandro Mateos-Canseco ◽  
Manuel Peña-Cruz ◽  
Arturo Díaz-Ponce ◽  
Jean-Luc Battaglia ◽  
Christophe Pradère ◽  
...  
Keyword(s):  
Ray Tracing ◽  
Thermal Response ◽  
Real Data ◽  
Transient Temperature ◽  
Flux Analysis ◽  
Time Resolved ◽  
Fast Tracking ◽  
Tracking Point ◽  
Quadrupole Method ◽  
Temperature Maps

A transient 3D thermal model based on the thermal quadrupole method, coupled to ray tracing analysis, is presented. This methodology can predict transient temperature maps under any time-fluctuating irradiance flux—either synthetic or experimental—providing a useful tool for the design and parametric optimization of concentration photovoltaics systems. Analytic simulations of a concentration photovoltaics system thermal response and assessment of in-plane thermal gradients induced by fast tracking point perturbations, like those induced by wind, are provided and discussed for the first time. Computation times for time-resolved temperature maps can be as short as 9 s for a full month of system operation, with stimuli inspired by real data. Such information could pave the way for more accurate studies of cell reliability under any set of worldwide irradiance conditions.

scholarly journals Status of injection transport beam line at kernfysish versneller institute

2004 ◽  
Vol 19 (2) ◽  
pp. 36-39
Author(s):  
Dragan Toprek ◽  
Iwo Formanoy ◽  
Sytze Brandenburg
Keyword(s):  
Optical Properties ◽  
Beam Line ◽  
Beam Size ◽  
Third Order ◽  
The Third ◽  
Quadrupole Method ◽  
Fringe Fields

At Kernfysisch Versneller Institute, optical properties of injection transport beam were studied. Measurements of beam size and emittance determined by "varying quadrupole method" are compared with calculations including fringe fields up to the third order with the COSYINFINITY code. Calculations and measurements qualitatively match; the calculations reflect the observed large beam losses. On the basis of the calculations new settings have been determined, resulting in a significant increase of the transmission. To achieve full transmission a complete redesign of the beam line is needed, in particular of the bending magnets.

scholarly journals Application of the quadrupole method for simulation of passive thermography

2017 ◽  
Author(s):  
William P. Winfree ◽  
Joseph N. Zalameda ◽  
Elizabeth D. Gregory
Keyword(s):  
Quadrupole Method

Application of the Thermal Quadrupole Method in the Characterization of Thermoelectric Modules

2007 ◽  
Vol 1044 ◽  
Author(s):  
Euripides Hatzikraniotis ◽  
Ioannis Samaras ◽  
Dimitra Georgakaki ◽  
Konstantinos M Paraskevopoulos
Keyword(s):  
Load Resistance ◽  
Electrical Measurement ◽  
Thermal Activity ◽  
Electrical Characteristics ◽  
Frequency Range ◽  
Rc Circuit ◽  
Te Modules ◽  
Quadrupole Method ◽  
Analyze Data

AbstractMeasurements of assembled thermoelectric (TE) modules commonly include investigations of the module output power versus load resistance. Using an AC electrical measurement for TE modules, a model of equivalent passive RC circuit has been developed and tested for both the thermal and electrical characteristics of the module. In this work we present and analyze data of a commercially available module, using equivalent passive RC circuit, to examine, explain and model the electro-thermal activity in the module. In addition data we analyzed by thermal quadrupole theory. Measurements were taken over the frequency range of 0,5mHz to 50 Hz and the device performance (ZT) was evaluated from measured data.

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