Journal ArticleDOI
Use of acoustic emission and ultrasonic techniques for monitoring crack initiation/growth during ratcheting studies on 304LN stainless steel straight pipe
C. K. Mukhopadhyay,T. Jayakumar,T.K. Haneef,Sanjay Kumar,B. P. C. Rao,Sumit Goyal,Suneel Gupta,Vivek Bhasin,S. Vishnuvardhan,Gajendra P. S. Raghava,P. Gandhi +10 more
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In this paper, the use of acoustic emission (AE) and ultrasonic techniques for monitoring crack initiation/growth during ratcheting studies on a straight pipe made of 304LN austenitic stainless steel under reversed four point bending.About:
This article is published in International Journal of Pressure Vessels and Piping.The article was published on 2014-04-01. It has received 28 citations till now. The article focuses on the topics: Acoustic emission.read more
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A review of non-destructive testing techniques for the in-situ investigation of fretting fatigue cracks
TL;DR: A review of non-destructive testing techniques used in-situ during fretting fatigue testing, which are compared in order to conclude the suitability of each technique is presented in this article.
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Characterization and Modeling of the Ratcheting Behavior of the Ferritic-Martensitic Steel P91
Kuo Zhang,Jarir Aktaa +1 more
TL;DR: In this article, the ratcheting behavior of the 9%-Cr-1%-Mo ferritic-martensitic (FM) steel P91 was investigated by uniaxial strain-and stress-controlled cyclic loading tests at room temperature and 550 °C.
Journal ArticleDOI
Bayesian synthesis for simulation-based generation of probability of detection (PoD) curves.
Mohamed Subair Syed Akbar Ali,Anish Kumar,Purnachandra B. Rao,Jayakumar Tammana,Krishnan Balasubramaniam,Prabhu Rajagopal +5 more
TL;DR: PoD curves generated using the proposed approach, where results from a reduced number of experimental defect cases and trials are used in combination with simulated datasets, are shown to compare well with those from the conventional approach using a large number of experiments.
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Machine Vision-Based Monitoring Methodology for the Fatigue Cracks in U-Rib-to-Deck Weld Seams
TL;DR: A machine vision-based monitoring methodology for the fatigue cracks in U-rib-to-deck weld seams is proposed, and the results indicate that the proposed methodology is very promising to monitor the fatigue cracked areas.
Journal ArticleDOI
Numerical and Experimental Study of Strain Localization in Notched Specimens of a Ductile Steel on Meso- and Macroscales
Sergey V. Panin,Sergey V. Panin,Alexander Vinogradov,D. D. Moiseenko,P. V. Maksimov,Filippo Berto,Filippo Berto,A. V. Byakov,A. V. Byakov,A. V. Eremin,A. V. Eremin,Natalia Narkevich +11 more
TL;DR: In this article, a computational approach for modeling the deformation behavior and fracture of materials with stress concentrators is proposed on the basis of the cellular automata technique, where numerical simulations performed on miniaturized specimens under dynamic loading are accompanied by laboratory tensile testing under quasistatic conditions applied to the specimens of a ductile structural steel with three typical notch shapes.
References
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Journal ArticleDOI
Crack nucleation and stage I propagation in high strain fatigue—II. mechanism
W.H. Kim,Campbell Laird +1 more
TL;DR: In this article, the role of deformation incompatibility in crack nucleation is discussed and the nature of Stage I growth (intergranular) in high strain fatigue is described and defined in terms of bulk slip in the grains adjacent to the crack.
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Effect of mean stress and ratcheting strain on fatigue life of steel
TL;DR: In this article, a stress-controlled fatigue test with tensile mean stress on ASTM A-516 Gr. 70 steel is presented, where the ratcheting effect on the fatigue life of materials was separated from the mean stress effect.
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Uniaxial ratcheting and failure behaviors of two steels
TL;DR: In this paper, the effects of stress amplitude and mean stress on the ratcheting and failure behaviors of 25CDV4.11 steel and SS304 stainless steel were experimentally studied under uniaxial cyclic tests and at room temperature.
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Uniaxial and biaxial ratchetting study of SA333 Gr.6 steel at room temperature
TL;DR: In this article, the uniaxial ratchetting characteristics of SA333 Gr.6 steel have been investigated at room temperature in the presence of cyclic axial stress with a constant mean stress of 200 MPa.
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Uniaxial and biaxial ratchetting in piping materials--experiments and analysis
TL;DR: In this article, the performance of the Chaboche kinematic hardening model has been evaluated to predict the ratchetting responses for a broad set of uniaxial and baoxial loading histories.