Transcription of 外面応力腐食割れ(ESCC)の感受性抽出の スクリーニング方法 …
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外面応力腐食割れ(ESCC)の感受性抽出の スクリーニング方法 …
(ESCC) .. 90% . (ESCC).. 50 .. 150 .. 150 800 .. 118 . 30 ESCC .. Relationship of damage mechanisms that became the leakage over 30. years in the petrochemical plant Safety Tomorrow 14. ESCC . ESCC .. SUS-304 . ESCC .. ESCC M/H .. ESCC .. ESCC .. ( ) .. The relationship between the stress corrosion cracking and rain waer retention area under the insulation materials 15 Safety Tomorrow . The relationship between the rainwater retention and corrosion with ESCC of equipment .. DFR(Decreasing Failure Rate) . ESCC .. SCC 100 MPa . CFR (Constant Failure Rate) IFR. (Increasing Failure Rate) . Safety Tomorrow 16.. 12. Bathtub curve es mated 10. DFR. 8 IFR. CFR. 6. 4. 2. 0. 0 10 20 30 40 50.. Relationship of Detected years and equipment wall thickness of the ESCC. m IFR. ESCC ESCC. [1] .. DFR m . 20 CFR m . 21 IFR. DFR (m) . CFR ESCC . IFR .. m . ( ) . [1].. t . F =1 exp ( ) .. F .. (year) ESCC SUS-304. ( ;250N/mm2) .. m ESCC .. m DFR ESCC [2].
でもき裂が進展するとして取り扱えば、単位時 間当たりのき裂進展量da/dtは式(1.2)のよう に近似される。[3][4][5][6]
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