JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN

JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN

Online ISSN : 1884-4758
Print ISSN : 0388-3051
ISSN-L : 0388-3051

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Volume 9, Issue 11

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[title in Japanese]

1974 Volume 9 Issue 11 Pages 945-949
Published: November 01, 1974
Released on J-STAGE: May 31, 2010

DOIhttps://doi.org/10.5988/jime1966.9.11_945

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[title in Japanese]

1974 Volume 9 Issue 11 Pages 950-953
Published: November 01, 1974
Released on J-STAGE: May 31, 2010

DOIhttps://doi.org/10.5988/jime1966.9.11_950

JOURNAL FREE ACCESS

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[title in Japanese]

1974 Volume 9 Issue 11 Pages 953-967
Published: November 01, 1974
Released on J-STAGE: May 31, 2010

DOIhttps://doi.org/10.5988/jime1966.9.11_953

JOURNAL FREE ACCESS

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[title in Japanese]

1974 Volume 9 Issue 11 Pages 967-978
Published: November 01, 1974
Released on J-STAGE: May 31, 2010

DOIhttps://doi.org/10.5988/jime1966.9.11_967

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[title in Japanese]

1974 Volume 9 Issue 11 Pages 979-984
Published: November 01, 1974
Released on J-STAGE: May 31, 2010

DOIhttps://doi.org/10.5988/jime1966.9.11_979

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[title in Japanese]

1974 Volume 9 Issue 11 Pages 984-991
Published: November 01, 1974
Released on J-STAGE: May 31, 2010

DOIhttps://doi.org/10.5988/jime1966.9.11_984

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[title in Japanese]

1974 Volume 9 Issue 11 Pages 991-997
Published: November 01, 1974
Released on J-STAGE: May 31, 2010

DOIhttps://doi.org/10.5988/jime1966.9.11_991

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[title in Japanese]

1974 Volume 9 Issue 11 Pages 998-1003
Published: November 01, 1974
Released on J-STAGE: May 31, 2010

DOIhttps://doi.org/10.5988/jime1966.9.11_998

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[title in Japanese]

[in Japanese]

1974 Volume 9 Issue 11 Pages 1004-1012
Published: November 01, 1974
Released on J-STAGE: May 31, 2010

DOIhttps://doi.org/10.5988/jime1966.9.11_1004

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An Analysis on Resonant Stress of Turbine Blade

Hidemi Gotoda, Koh Nakasu

1974 Volume 9 Issue 11 Pages S49-S61
Published: November 01, 1974
Released on J-STAGE: May 31, 2010

DOIhttps://doi.org/10.5988/jime1966.9.11_S49

JOURNAL FREE ACCESS

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Turbine blade stress level at resonance with nozzle stimuli were studied experimentally using a developed test facility which could cause blade failure. The experiment was carried out on single blades and shrouded group of blades. Factors concerned with resonant stress were analyzed from measurement of velocity distribution across nozzle outlet, exciting forces and damping properties, and found as follows.
Exciting forces were much affected with the pitch ratio of blade to nozzle and less with the axial clearance between nozzle and blade. The damping properties varied with blade construction, stress level and vibration mode for the same material. Particularly it was noted that the 1st tangential out of phase mode vibration had smaller root damping, since it had a similar movement at blade root to a tuning fork. Blade failure could occur due to vibration at stress level near to the fatigue limit stress.
From the result an allowable design stress was discussed referring to the practice of a turbine manufacturer.

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