Measurement and prediction of CTOD in austenitic stainless steel

Khor, W, Moore, P L, Pisarski, H G, Haslett, M and Brown, C J (2016) Measurement and prediction of CTOD in austenitic stainless steel Fatigue & Fracture of Engineering Materials & Structures, 39 (11). pp. 1433-1442.

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Abstract

Variation of Crack Tip Opening Displacement (CTOD) test values can have a significant effect on the Engineering Critical Assessment of a structure. This paper examines the development of CTOD with increasing load in an austenitic stainless steel. The silicone replication method giving variation of CTOD across the specimen thickness, and Digital Image Correlation (DIC) are compared to each other, and in turn to clip gauge measurements from tests. Results from Finite Element models are also presented. Estimations of CTOD from BS 7448‐1, ISO 12135 and ASTM E1820, and a proposed modification from JWES are compared to the experimental data from the crack cast in silicone compound – assumed to be the actual CTOD. The DIC measurement showed consistency with crack replicas, and a formula is given to estimate CTOD using DIC. For high strain hardening austenitic stainless steel, both the JWES and ASTM E1820 estimations provide adequate accuracy for CTOD.

Item Type:	Article
Divisions :	Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :	Name Email ORCID Khor, W w.khor@surrey.ac.uk Moore, P L Pisarski, H G Haslett, M Brown, C J
Date :	26 July 2016
DOI :	10.1111/ffe.12487
Copyright Disclaimer :	© 2016 The Authors his is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Depositing User :	Diane Maxfield
Date Deposited :	06 Jun 2019 11:04
Last Modified :	06 Jun 2019 11:04
URI:	http://epubs.surrey.ac.uk/id/eprint/851943

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