The deck plates of single-deck-type floating roofs for large oil storage tanks are joined by single-welded Full-fillet lap joints. In areas with frequent strong winds, fatigue cracks sometimes occur in the welds of the deck plate. The aim of the present study is to investigate the effect of the gap imperfection of the lap joints on the fatigue life. In the case that tensile load acted on Full-fillet lap joints, the stress at the crack face becomes larger by gap imperfection of the lap joint. The authors have developed a software system called “SCANP (Surface Crack Analysis Program)”, a software system to evaluate the stress intensity factor, K, and to simulate fatigue crack propagation for surface cracks for arbitrarily distributed surface stresses. The fatigue life of a lap joint was predicted by the “SCANP” using the calculated stresses at the root crack face and the toe crack face. The number of loading cycles to penetration for arbitrary bending load amplitudes and tensile load amplitudes are obtained.
Skip Nav Destination
ASME 2012 Pressure Vessels and Piping Conference
July 15–19, 2012
Toronto, Ontario, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5505-8
PROCEEDINGS PAPER
Assessment of Fatigue Crack Growth in Imperfect Lap Joint: Part 2 — Crack Propagation Analysis Using “SCANP” Available to Purchase
Satoshi Igi,
Satoshi Igi
JFE Steel Corporation, Chiba, Japan
Search for other works by this author on:
Yasushi Morikage,
Yasushi Morikage
JFE Steel Corporation, Chiba, Japan
Search for other works by this author on:
Masaru Wakasa,
Masaru Wakasa
Ishii Iron Works Co., Ltd., Tokyo, Japan
Search for other works by this author on:
Shoichi Yoshida,
Shoichi Yoshida
Yokohama National University, Yokohama, Japan
Search for other works by this author on:
Kazuyoshi Sekine,
Kazuyoshi Sekine
Yokohama National University, Yokohama, Japan
Search for other works by this author on:
Masaki Shiratori,
Masaki Shiratori
Yokohama National University, Yokohama, Japan
Search for other works by this author on:
Tomohiko Tsuchida,
Tomohiko Tsuchida
Japan Oil, Gas and Metals National Corporation, Tokyo, Japan
Search for other works by this author on:
Katsuki Iwata
Katsuki Iwata
Japan Oil, Gas and Metals National Corporation, Tokyo, Japan
Search for other works by this author on:
Satoshi Igi
JFE Steel Corporation, Chiba, Japan
Yasushi Morikage
JFE Steel Corporation, Chiba, Japan
Masaru Wakasa
Ishii Iron Works Co., Ltd., Tokyo, Japan
Shoichi Yoshida
Yokohama National University, Yokohama, Japan
Kazuyoshi Sekine
Yokohama National University, Yokohama, Japan
Masaki Shiratori
Yokohama National University, Yokohama, Japan
Tomohiko Tsuchida
Japan Oil, Gas and Metals National Corporation, Tokyo, Japan
Katsuki Iwata
Japan Oil, Gas and Metals National Corporation, Tokyo, Japan
Paper No:
PVP2012-78365, pp. 547-555; 9 pages
Published Online:
August 8, 2013
Citation
Igi, S, Morikage, Y, Wakasa, M, Yoshida, S, Sekine, K, Shiratori, M, Tsuchida, T, & Iwata, K. "Assessment of Fatigue Crack Growth in Imperfect Lap Joint: Part 2 — Crack Propagation Analysis Using “SCANP”." Proceedings of the ASME 2012 Pressure Vessels and Piping Conference. Volume 6: Materials and Fabrication, Parts A and B. Toronto, Ontario, Canada. July 15–19, 2012. pp. 547-555. ASME. https://doi.org/10.1115/PVP2012-78365
Download citation file:
20
Views
Related Proceedings Papers
Related Articles
Fatigue Modeling for
Elastic Materials With Statistically Distributed
Defects
J. Appl. Mech (November,2007)
An Experimental Investigation of Bending Fatigue Initiation and Propagation Lives
J. Mech. Des (September,2001)
Fatigue Evaluation of API 12F Shop-Welded Tanks With a New Roof-to-Shell Junction Detail
J. Pressure Vessel Technol (October,2021)
Related Chapters
Quantitative Analysis of Fatigue Process—Microcracks and Slip Lines Under Cyclic Strains
Fatigue Mechanisms
Introductory Information
The Stress Analysis of Cracks Handbook, Third Edition