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Volume 58, Issue 4
Displaying 1-6 of 6 articles from this issue
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Seiji USHIAMA, Masayuki HATTA, Kohji TODA1985 Volume 58 Issue 4 Pages 189-194
Published: April 20, 1985
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSA method of observing the paint film drying process is proposed by using an amorphous magnetostrictive delay line. The propagation characteristics in the delay line composed of two layers of an amorphous ribbon and a paint film are strongly related with the drying state of the paint film. The deviation of the phase difference between the input and the output electrical signal corresponds to the velocity change of the elastic wave propagating in the stratified structure. The maximum phase difference deviation arrises at the time of the disappearance of the paint fluidness during the drying process. The time response of the insertion loss in the amorphous ribbon delay line has the same tendency as that of the phase difference deviation except for the small shift of the peak time. The above described observation results suggest that the present technique is valid for evaluating the drying state of the paint film.View full abstractDownload PDF (891K) -
Seiji USHIAMA, Koichi MIZUTANI, Kohji TODA1985 Volume 58 Issue 4 Pages 195-199
Published: April 20, 1985
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSA method of observing the paint film drying process is proposed by using a Lamb wave device. The device has two surfaces : one for energy transduction and the other for painting. The propagation characteristics in the Lamb wave device composed of two layers, a piezoelectric substrate and a paint film, are related to the drying state of the paint film.
The Lamb wave velocity propagating on the layered structure takes a peak value during the drying process. The peak time depends on the film thickness, and arises when the paint fluidity disappears. The time response of the insertion loss of the device has the same tendency as that of the velocity except for the small shift of the peak time. The above described observation results suggest that the present technique is valid for evaluating the drying state of the paint film.View full abstractDownload PDF (861K) -
Penetration of a Bar into Powder Solids Layer and Relationship between Discharge Ratio and Bulk Density or Angle of ReposeYasunobu YUASA, Mitsuo YAMASHIRO1985 Volume 58 Issue 4 Pages 200-203
Published: April 20, 1985
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSIn practice, powder solids dealt with industrially have grain sizes and the shapes of particles are : irregular. In the previous report, the authors have carried out the experiments related to tapping and hulk density by using two kinds of industrial powders (starch and talc) and its mixed powders and those correlations have been described.
In this study, the experiment of the penetration of a bar into powder solids layer and that of the flow-out of the powder solids through an orifice on the bottom of a vessel were carried out. The following facts, were made clear :
(1) In the former, the smaller the particle diameter is, a penetrating bar penetrates deeper when.an emery-paper is not pasted on it.
(2) In the latter, the discharge ratio increases linearly with an increase of bulk density, but the relationship for angle of repose can not be shown clearly.View full abstractDownload PDF (367K) -
Sango MURAMATSU1985 Volume 58 Issue 4 Pages 204-210
Published: April 20, 1985
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (917K) -
Kenji SUMIYA, Tsunetaka MATSUMOTO1985 Volume 58 Issue 4 Pages 211-219
Published: April 20, 1985
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (1172K) -
Teijiro KITAO1985 Volume 58 Issue 4 Pages 220-233
Published: April 20, 1985
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (1738K)
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