Article : [TRIAC097]

Info : REPONSE 191, le 04/02/2002.

Titre : COMPARISON OF THEORETICAL ESTIMATES AND EXPERIMENTAL MEASUREMENTS OF FATIGUE CRACK GROWTH UNDER SEVERE THERMAL SHOCK CONDITIONS - PART II: THEORETICAL ASSESSMENT AND COMPARISON WITH EXPERIMENT.

Cité dans : [DIV333]  Recherche sur les mots clés thermal + shock + liquid , février 2002.

Source : J Pressure Vessel Technol Trans ASME v 109 n 4 Nov 1987 p 421-427
CODEN : JPVTAS
ISSN : 0094-9930
Année : 1987
Document_Type : Journal
Treatment_Code : Theoretical; Experimental
Language : English
Stockage :

Abstract :
This paper reports the theoretical assessment of cracking which may
occur when a severe cycle comprising alternate upshocks and downshocks is
applied to an axisymmetric feature with an internal, partial penetration
weld and crevice.The experimental observations of cracking are reported
separately.A good agreement was noted even though extensive cycle
plasticity occurred at the location of cracking.It is concluded that the
LEFM solution has correlated with the experiment mainly because of the
axisymmetric geometry which allows a large hydrostatic stress to exist at
the internal weld crevice end.Thus the stress at the crevice can approach
the singular solution required for LEFM correlations without contributing
to yielding.(Author abstract) 9 refs.

Accession_Number : 1988(3):30746 COMPENDEX
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