Nucleation and Growth of Creep Voids in Circumferentially Notched Specimens
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概要
- 論文の詳細を見る
Several creep damage tests of pure aluminum were carried out using circumferentially notched bars, which can easily produce multiaxial state of stress near net section. The surface of notch root and longitudinal section with central axis were inspected to observe the growth of creep voids and cracks by means of scanning electron microscopy and optical microscopy. Experimental results show that the maximum length of the largest creep void/crack on the notch surface can be expressed as an exponential function of lifetime ratio. This will help to predict residual lifetime of components with these notches. However, a great care is required not to miss the maximum creep defect, because only a part of creep voids and cracks appears on the surface of notch root and most of the creep defects lie inside the notch root.
- 一般社団法人日本機械学会の論文
- 1998-04-15
著者
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Kobayashi K
Alithium Ltd.
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Kobayashi Ken-ichi
Faculty Of Engineering Toyama University
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IMADA Haruyuki
Faculty of Engineering, Chiba University
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MAJIMA Tamotsu
Faculty of Engineering, Chiba University
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Imada Haruyuki
Faculty Of Engineering Chiba University:(present Address)fuji Heavy Industries Ltd.
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Majima Tamotsu
Faculty Of Engineering Chiba University
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- Nucleation and Growth of Creep Voids in Circumferentially Notched Specimens
- Interference Effect of Notches : 1st Report , An Evaluation of Interference Effect of Notches on Yield Point Load of Notched Bar with Double U-Notches by Upper and Lower Bound Theorems
- A Method of Obtaining Strain Distributions of Circumferentially Notched Cylindrical Bars by means of a Hardness Test
- Interference Effect of Notches : 2nd Report, An Experimental Investigation on Interference Effect of Notches on Strengths and Deformation Properties of Notched Bar with Double U-Notches