Analysis of data aquisition requirements for shm system in aircraft

2015 ◽  
Vol 1 (8-9) ◽  
pp. 66-71
Author(s):  
Michał Wągrowski
Keyword(s):  
Author(s):  
N.-H. Cho ◽  
K.M. Krishnan ◽  
D.B. Bogy

Diamond-like carbon (DLC) films have attracted much attention due to their useful properties and applications. These properties are quite variable depending on film preparation techniques and conditions, DLC is a metastable state formed from highly non-equilibrium phases during the condensation of ionized particles. The nature of the films is therefore strongly dependent on their particular chemical structures. In this study, electron energy loss spectroscopy (EELS) was used to investigate how the chemical bonding configurations of DLC films vary as a function of sputtering power densities. The electrical resistivity of the films was determined, and related to their chemical structure.DLC films with a thickness of about 300Å were prepared at 0.1, 1.1, 2.1, and 10.0 watts/cm2, respectively, on NaCl substrates by d.c. magnetron sputtering. EEL spectra were obtained from diamond, graphite, and the films using a JEOL 200 CX electron microscope operating at 200 kV. A Gatan parallel EEL spectrometer and a Kevex data aquisition system were used to analyze the energy distribution of transmitted electrons. The electrical resistivity of the films was measured by the four point probe method.


2011 ◽  
Vol 110-116 ◽  
pp. 3557-3562 ◽  
Author(s):  
I.I. Matsko ◽  
Y.V. Snegirev ◽  
O.S. Logunova

The aim of the research in progress is to enhance continuously cast billets images software analyzer (based on sulfur prints and template photos) data aquisition and preparation methods. Aquired sulfur prints images and templates photographs were evaluated according to statistical criteria. Raw data aquisition and preparation methods for continuously cast billets analysis software based on sulfur prints and templates photographs were developed in course of work. Conditions of aquiring templates sulfur prints and photographs were also evaluated


Author(s):  
H. Noma ◽  
K. Kagure ◽  
Y. Nakajima ◽  
H. Shnimonomura ◽  
M. Oshaga
Keyword(s):  

Author(s):  
E. F. J. de Mulder ◽  
R. Hillen

AbstractThe Geological Survey of The Netherlands is involved in a number of Quaternary engineering geological projects. Traditionally, a “top-down” approach is followed, that is, at a client’s request, thematic maps derived mainly from the basic data of the geological mapping Programme are produced. More recently, projects have been started that require a “bottom-up” approach: for each such project, criteria are formulated that are to be met throughout all phases of the project, that is, from data aquisition to the presentation of the results. Both approaches are needed to maintain the vitality of the geological advisory work as well as of the regular geological mapping programme.


2020 ◽  
Vol 2 (2) ◽  
pp. 133-138
Author(s):  
Iwan Setyawan ◽  
Sandy Reynaldy Riawan ◽  
Sri Poernomo Sari ◽  
Ridwan
Keyword(s):  

Pipa kalor merupakan salah satu jenis pendingin yang memanfaatkan sistem dua fase yang memiliki kemampuan memindahkan kalor yang cukup tinggi. Perangkat ini tidak mengkonsumsi energi mekanik dan kinerja termal tergantung pada struktur sumbu. Tujuan penelitian ini adalah untuk membuat pipa kalor lurus tembaga dengan sumbu kapiler Screen Mesh 300 sebanyak 6 layer.  Pada penelitian ini dilakukan pengujian dengan memvariasikan filling rasio, FR40%,60% dan 80%. Pengambilan data diambil menggunakan data aquisition Labjack U6 Pro. Termokopel ditempatkan di beberapa titik kemudian diolah dengan sistem labview. Dari hasil penelitian, didapatkan temperatur steady evaporator tertinggi dengan Filling Rasio 40% pada beban kalor 10W sampai 175W.  Untuk FR 80% menghasilkan temperatur evaporator yang paling rendah pada beban kalor 10W hingga 100W.  Untuk beban kalor yang lebih tinggi 175W hingga 275W, FR 60% menghasikan temperature evaporator terendah diantara FR 40% dan FR 80%. Selanjutnya, tahanan termal pada FR 80% menghasilkan nilai terbesar untuk semua beban kalor. Sedangkan FR 60% menghasilkan tahanan termal yang hampir sama dengan dengan FR 80% untuk beban kalor 25W hingga 275W. Namun demikian pada beban kalor 10W, FR 60% menghasilkan tahanan termal yang lebih rendah diantara FR40% dan FR 80%. Dengan demikian, dari hasil temperatur dan tahanan termal untuk pipa kalor dengan range beban kalor yang yang lebih luas, FR 60% menghasilkan kinerja terbaik dibandingkan FR 80% dan FR 40%.      


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