Nov 19, 2019 · The two longitudinal plates of the upper deck and hatch side coaming are the main structural elements that support bending stress during hogging of the ship structure, and brittle crack arrest toughness as well as crack initiation toughness are required in these steel plates to avoid the catastrophic ship damage.
Application of Equivalent CTOD Ratio to Fracture Steel Research Laboratory, JFE Steel Corporation 1, Kawasaki-cho, Chuo-ku, Chiba 260-0835, Japan structural members that can be regarded as wide plates, including center crack panels, through-wall crack panels, and toughness test and the wide plate tests. p 0.2 (a) Center Through-thickness Crack
This study focuses on the effect of texture intensity on crack arrest properties. It is found that steel plates with texture show lower 25 T K6000 than other steels without texture, even if the transition temperatures vTrs of these steels are on the same level. The role of the (211) texture is more significant than the (100) texture.
Development of YP460 Class Steel Plate with Excellent Abstract. This paper presents the development of heavy thickness steel plate with both high arrestability and high tensile properties by means of the texture-controlled Thermo-Mechanical Control Process (TMCP) with optimization of the chemical composition. The developed YP460 (EH47 grade) heavy thickness steel plate has an excellent arrestability of over 15,000 N/mm3=2, which is more than
Effect of Stress Reection on Dynamic Stress Intensity Steel Research Laboratory, JFE Steel Corporation Chiba, Chiba, Japan as brittle crack initiation resistance is often required in steel plates used in important steel structures. It is generally known that the tion of crack arrest toughness in the original plate thickness for practical service is required. Historically, the temperature
Test temperatures are selected at which arrest toughness, Kca evaluated by temperature gradient type standard ESSO test are the same for two test plates. The steel plate with higher toughness in mid-thickness (t/2) than that in quarter thickness (t/4) could arrest a running long brittle crack although the plate with lower toughness in mid-thickness than that in quarter thickness could not arrest it.
Fracture control of extremely thick welded steel plates Apr 18, 2013 · The rapid enlargement of the size of container ships has led to the application of extremely thick plate in the deck structures, which may grow concerns about the fracture toughness at the butt-weld with large amount of heat input, and the arrest toughness of brittle crack propagation in the base metal of such thick plates. Also, slam-induced whipping stresses might affect the fatigue crack
JFE Group CSR Report 2018 (Revised Version)As previously disclosed, JFE Steel Corporation, a steel producer in the JFE Group, is participating in the Commitment to a Low Carbon Society initiatives of the Japan Iron and Steel Federation (JISF) to help mitigate climate change through 2030. The initiatives focus on the three Ecos (eco-process,
Clad steel plate is a composite steel plate made by bonding stainless steel, etc. (cladding material) to either or both sides of a carbon steel or low-alloy steel (base metal). Clad steel plate combines the necessary strength of a structural material (base metal) with the resistance to heat and corrosion (cladding material). Moreover, it offers substantial economic benefit, because it costs substantially less than plate made entirely of the cladding material. JFE Steel
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Material design of high strength heavy gauge linepipes Linepipe material for sour gas service primarily needs to have crack resistant properties. However, applications of sour linepipes are expanding toward deep water or cold regions, which require higher toughness and/or heavier wall thickness as well as higher strength. Steel plates for high strength linepipes, Grade X60 and higher, are produced
Plate Business Planning Department, JFE Steel Corporation Tokyo, Japan A YP460 N/mm2 class steel plate with a thickness of up to 100 mm for ultra-large container carriers has been developed by thermo-mechanical control process (TMCP). The developed YP460 steel plate has an excellent brittle crack arrest toughness of over 11,000 N/mm3=2. The characteristics of the plate include a highly oriented
Thick Plate Technology for the Last 100 Years:A World However, due to the aftereffects of the Oil Crisis of 1973 and other factors, production cuts continued, and over the 10 years from 1977, Nippon Steels Hirohata Works Plate Mill, Kawasaki Steels Mizushima Works No. 1 and Chiba Plate Mills, and Sumitomo Metals Wakayama Works Plate Mill were shut down, and production remained on a level JFE Steel Corporation Plates - Products & TechnologyPioneering the future of ships Steel Plate for Large Heat Input Welding Steel plate to enhance welding quality Crack Arrest Steel Plate Guarantees excellent arrestability to brittle crack propagation Corrosion-Resistant Steel Plate for Shipbuilding Corrosion-resistant steel that lowers life cycle cost