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Volume 21 (2001)
- Issue 83 Pages 203-
- Issue 82 Pages 141-
- Issue 81 Pages 81-
- Issue 80 Pages 2-
- Issue 2Supplement Pag･･･
- Issue 1Supplement Pag･･･
Volume 21, Issue 1Supplement
Displaying 101-106 of 106 articles from this issue
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Kohei Arai, Kaname Seto2001 Volume 21 Issue 1Supplement Pages 355-358
Published: July 01, 2001
Released on J-STAGE: September 03, 2009
JOURNAL FREE ACCESSSST (Sea Surface Temperature) is estimated, independently, with VIRS (Visible Infrared Scanner) or TMI (TRMM Microwave Imager), which are attached TRMM (Tropical Rainfall Measuring Mission) satellite. A method for interpolation of multi-sensor satellite images based on Multi-Resolution Analysis (MRA) is proposed. The experimental results with TMI/SST image and VIRS/SST image show that RMS error is from 0.87 to 0.91 C.View full abstractDownload PDF (933K) -
Masahiro NAKASHIMA, Hui Li, Takahide TABATA, Akira SHIGEYOSHI, Tsutomu ...2001 Volume 21 Issue 1Supplement Pages 359-360
Published: July 01, 2001
Released on J-STAGE: September 03, 2009
JOURNAL FREE ACCESSThis paper describes the circular wall jet issuing in the longitudinal direction of the cylinder. The flow visualization in the several cross sections normal to the jet flow has been carried out by means of the system composed of the dual-pulse YAG-laser, the CCD-camera, and the CRV unit. The image information has been processed by the PIV-method. Furthermore, the wavelet analysis has been also conducted by using the velocity component in the span-wise direction obtained from the image processing. As a result, it has been clarified that at the downstream location far from the exit the jet issues with swinging from side to side largely and its frequency is relatively low.View full abstractDownload PDF (853K) -
Makoto SUZUKI, Hwa-Soo LEE, Masahiro TAKEI, Sakari YOKOYAMA, Yoshifuru ...2001 Volume 21 Issue 1Supplement Pages 361-362
Published: July 01, 2001
Released on J-STAGE: September 03, 2009
JOURNAL FREE ACCESSSurface damaged layer is a materially deterioration in the machined surface, which caused by the heat occurring in the machining process. In the manufacturing field, this problem is important because the formation of the surface damaged layer much affects on the quality of machined material surface.
In this study, a concept to predict the depth of a surface damaged layer has been proposed with a combination of wavelets transform and vectorization. As a result, the depth of layer calculated from a real image indicates a tendency of hardness test measurement.View full abstractDownload PDF (532K) -
Shusuke MABUCHI, Seiji HAYANO, Yoshifuru SAITO, Kiyoshi HORII2001 Volume 21 Issue 1Supplement Pages 363-366
Published: July 01, 2001
Released on J-STAGE: September 03, 2009
JOURNAL FREE ACCESSIn this paper, we propose a visualization method of the quasi-two-dimensional (2D) current distribution by locally one dimension (1D) method.
At first, we measure a perpendicular magnetic field to a current distributing surface, and estimate current distribution by using the two-dimensional inverse analysis.
Second, we estimate the 1D X and Y current components from the 1D measured X and Y magnetic fields by using the 1D inverse analysis, respectively.
Finally, after convolving among the 2D and locally 1D current vectors, it is possible to evaluate the quasi-2D current distribution. As a result, it is found that more detailed current visualization than those of 2D inverse analysis is possible by convolution among the 1D and 2D current vectors.View full abstractDownload PDF (1320K) -
Yasuyuki WATAZAWA, Seiji HAYANO, Yoshifuru SAITO, Kiyoshi HORII2001 Volume 21 Issue 1Supplement Pages 367-370
Published: July 01, 2001
Released on J-STAGE: September 03, 2009
JOURNAL FREE ACCESSPreviously, we have proposed a semi-analytical electromagnetic filed computation method, which has made it possible to compute the complex electromagnetic field distributions not obtainable by the conventional numerical schemes, such as finite elements and boundary elements means. However, because of the displacement current, our semi-analytical method encounters some difficulty when analyzing the high frequency electromagnetic field distribution. To overcome this difficulty, we are now developing a new semi-analytical approach taking the displacement currents into account. In the present paper, we visualize the displacement currents by new-semi-analytical method, and its spatial distributing characteristics are extracted by means of wavelets analysis.View full abstractDownload PDF (1347K) -
Tomokazu NARUTA, Hisashi ENDO, Seiji HAYANO, Yoshifuru SAITO2001 Volume 21 Issue 1Supplement Pages 371-374
Published: July 01, 2001
Released on J-STAGE: September 03, 2009
JOURNAL FREE ACCESSIn order to compute the magnetic field distributions of the magnetic sensor, this paper carries out several axisymmetrical magnetic field simulations fully taking the magnetic hysteretic properties of ferromagnetic core materials as well as open boundary condition into account. In the present paper, we apply a wavelet transform to the magnetic field distributions in order to extract the spatial frequency characteristics.View full abstractDownload PDF (805K)