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Digitale Medien

FATIGUE CRACK GROWTH BEHAVIOUR IN DISSIMILAR BONDED MATERIALS (1979)

HARADA, S. ; OHJI, K. ; OGURA, K.

Oxford, UK : Blackwell Publishing Ltd

Fatigue & fracture of engineering materials & structures 2 (1979), S. 0

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Details

ISSN: 1460-2695

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Maschinenbau

Notizen: Abstract The fatigue crack growth behaviour of dissimilar bonded materials was studied using explosively bonded naval brass clad steel plate and roll bonded nickel clad and naval brass clad steel plates. When the residual stresses produced during manufacturing processes were small, the fatigue crack growth rates showed a good correlation with the true ΔK-values evaluated for the dissimilar bonded materials; apparent ΔK-values, determined on uniform material, failed to be a correlating variable. The residual stresses strongly affected the fatigue crack growth rate of the dissimilar materials. Some microscopic and fractographic observations were made on the fatigue-fractured dissimilar materials.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1460-2695.1979.tb01341.x

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Digitale Medien

Racial differences in alcohol sensitivity: A new hypothesis (1979)

Goedde, H. W. ; Harada, S. ; Agarwal, D. P.

Springer

Human genetics 〈Berlin〉 51 (1979), S. 331-334

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Details

ISSN: 1432-1203

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Medizin

Notizen: Summary A hypothesis regarding alcohol sensitivity in Japanese due to a polymorphism of liver aldehyde dehydrogenase (ALDH) is presented. ALDH was found to show two major bands, a faster migrating isozyme with a low Km for acetaldehyde and a slower migrating isozyme with a high Km for acetaldehyde. Out of 40 livers of Japanese, 21 had only the slower migrating isozyme. No such variation was detected in 68 autopsy livers of Germans. Our data suggest that the initial alcohol sensitivity, quite common in individuals of Mongoloid origin, might be due to a delayed oxidation of acetaldehyde rather than its higher than normal production by atypical alcohol dehydrogenase.