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Volume 25, Issue 9
Displaying 1-2 of 2 articles from this issue
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Mitsuo WATANABE, Satoshi HASEGAWA, Mtsuru SHIMAGAKI, Tomoyuki HASHIMOT ...2005 Volume 25 Issue 9 Pages 52-56
Published: 2005
Released on J-STAGE: September 30, 2005
JOURNAL FREE ACCESSA rocket requires propellant pumps of the high suction performance not only to reduce its total weight,but also to increase its reliability. It is very important to know flow and cavitation patterns of an inducer to design the high suction performance pump. In this experiment, both the patterns were observed using a PIV system and a high speed camera, respectively. Both the relationship was discussed.
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- Four-Point Bend Test of Timber Including Knots -Koji MURATA, Minoru MASUDA, Seiichiro UKYO2005 Volume 25 Issue 9 Pages 57-63
Published: 2005
Released on J-STAGE: September 30, 2005
JOURNAL FREE ACCESSStrain distribution was analyzed using two dimensional digital image correlation method (DIC) for four-point bending of wooden beam. We took account of the out-of-plane displacement measured by stereography with 2 set of digital camera system, and tried to examine the accuracy and the issues of digital image correlation analysis for wood specimen.
Strain distributions of wooden beam could be measured with good accuracy with DIC. But out-of-plane displacement occurred not negligibly, so that the strain distribution had to be corrected considering the effect of the out-of-plane displacement, i.e., displacement toward the camera. In the specimen whose physical property is asymmetric as a timber including knots, the correction was effective for the accurate strain measurement.
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