... in the development of thick steel plates with excellent brittle crack arrest performance. An ultra-wide duplex ESSO test was also performed, and the effect of the toughness distribution in the thickness direction on the arrestability of long brittle cracks was confirmed. As a result, even in plates having the same...

... thickness vtr toughness machine learning steel plate ndtt specimen correlation chemical composition equation heavy-thick plate arrest toughness artificial intelligence small-scale test impact test evaluation method brittle crack arrest toughness esso test Simplified...

... method of temperature gradient type ESSO test was established through activities in the Japan Welding Engineering Society. However simplified test method is desired because ESSO test requires large specimen and large test rig. In this study, common material is evaluated by newly suggested small test...

... tensile properties for every thickness portion. Moreover, the steel also exhibits low cold cracking susceptibility equal to conventional YP390 steel plates due to its low PCM design, consequently good weldability. test plate thickness arrestability esso test metals & mining brittle crack...

... ABSTRACT The crack arrestability in a steel plate is determined by both its surface layer properties and its mid-section properties. Through investigation of the correlation between ESSO test results (as a large scale crack-arrest test) and NRL drop weight test results (as a small scale...

... of welding variables on the crack arrest toughness and crack propagation path of thick steel plate welds. Quantitative analysis by temperature gradient ESSO test was conducted to clarify the effect of welding variables for flux cored arc welding (FCAW) and electro gas welding (EGW) joint of thick steel...

..., container ships have become large-scaled so significantly that even larger ships of over 16,000 TEU have been designed and constructed in recent years. And these ships are applied heavy plates 70-90mm in thickness. The Kca 4,000-6,000 N/mm1.5 of arrestability in temperature- gradient ESSO tests (large...

... cored arc welding (FCAW) process only and combined welding process (EGW+FCAW), were used to produce full thickness weld joints. Temperature gradient ESSO test was performed to measure Kca of the welded joints. To develop the brittle crack arrest method, actual structural specimens were utilized...

... and extremely important that a backup brittle crack arresting function is provided to arrest its propagation and to ensure structural reliability. As an evaluation method of arrest toughness, several test methods have been developed: Robertson test (1953), ESSO test (1955), Double tension test (1958) and others...

... adopted to prepare the welded joints. Temperature gradient ESSO test was performed to measure the Kca of the welds. Also, constant temperature(-10°C) ESSO test was performed to establish of brittle crack arrest method using real structural specimens. In this study, it was aimed to investigate the effect...

... ABSTRACT Effect of thickness on the brittle crack arrest toughness value (K ca ) of thick steel plate welds has been investigated. Steel plates with the thickness of 50 and 80mm were used and electro gas welding process was adopted to prepare the welded joints. Temperature gradient ESSO test...