Results 71 to 80 of about 1,666,698 (151)

Fracture Assessment of Weld Joints of High-Strength Steel in Pre-Strained Condition

Applied Sciences, 2019
Unstable fractures tend to occur after ductile crack initiation or propagation. In most collapsed steel structures, a maximum 15% pre-strain was recorded, at the steel structural connections, during the great earthquake of 1995, in Japan. Almost-unstable
Gyubaek An, Jeongung Park, Mituru Ohata, Fumiyoshi Minami   +3 more
doaj   +1 more source

X70 STEEL CRITICAL CTOD VALUE ANSYS CALCULATION

Jixie qiangdu, 2015
With the development of ocean engineering,increase in the number of project exploration of Marine oil and gas,natural gas and oil transportation engineering are increasingly developed.
YE YunQin, MIAO ZhangMu, ZHANG BuAi
doaj  

Effect of notch shape on the fracture toughness behavior

International Journal of Naval Architecture and Ocean Engineering
This study evaluates the effect of notch shape on the fracture toughness of a 500 MPa base material designed for liquefied carbon dioxide storage tanks.
Jiseung Lee, Wonjun Jo, Junseok Seo, Gyubaek An   +3 more
doaj   +1 more source

Development and Application of φ457 mm x 25.4 mm Large Size X65QO Seamless Steel Tube for Deep Subsea

Teshugang, 2021
The composition and process flowsheet of deep water oilfield large size deep subsea pipeline steel have been designed and developed. The experimental batch results of X65QO steel seamless tube show that: through the optimization of micro alloy ...
熊刚, 夏文斌, 李端正, 田研
doaj  

STUDY ON CRITICAL CTOD OF BIG-THICKNESS AND HIGH-STRENGTH STEELS

Jixie qiangdu, 2015
As one of the essential criteria of assessment to welding toughness,CTOD（ Crack tip opening displacement） is widely applied in engineering.The research on critical CTOD of big thickness and high strength steels has been a hot issue,therefore the ...
XIA ZiYu, MIAO ZhangMu, MA Tao, CHEN Gang, PENG Sheng   +4 more
doaj  

Microstructure and mechanical properties of 9Ni steel joints welded by NiCrMo filler alloy

Cailiao gongcheng
Welding of cryogenic 9Ni steel is performed using NiCrMo alloy systems with different Nb and C contents. The microstructure and mechanical properties of the welded joints are investigated， and the fracture toughness of the joints under ultra-cryogenic ...
CHANG Zijin, QI Yanchang, MA Chengyong, CONG Baoqiang, WEI Jinshan, PENG Yun   +5 more
doaj   +1 more source

Analysis of fracture toughness and Pop-in effect of weld metal for EH36 marine structural steel

Hanjie xuebao
To study the dispersion of low-temperature fracture toughness and the discontinuous “Pop-in” phenomenon of multi-layer and multi-pass welds using Chinese welding materials for marine structural steel, the causes of the Pop-in phenomenon in the weld ...
Jiangzhong HUANG, Lixia LI, Xinyu LU, Hongwei YANG, Lishun MA   +4 more
doaj   +1 more source

Effects of Mo addition on crack tip opening displacement (CTOD) in heat affected zones (HAZs) of high-strength low-alloy (HSLA) steels. [PDF]

Sci Rep, 2019
Lee SG, Kim B, Kim WG, Um KK, Lee S.
europepmc   +1 more source

Comparison of methods to determine CTOD for SENB specimens in different strain hardening steels

, 2017
Methods for determining crack tip opening displacement (CTOD) given in national and international standards are compared for steels with a range of strain hardening characteristics.
W.L. Khor, C. Brown, Moore, P, Pisarski, H, Pisarski, H., Brown, C, P. Moore, Khor, W. L., Brown, C., H. Pisarski, Moore, P., Khor, WL   +11 more
core   +1 more source

CTOD Specimen’s Fatigue Crack Prefabricated Test for Bridge Steel

, 2011
According to the BS7448 fracture toughness test standard and DNV-OS-C401,this dissertation conducted a CTOD(crack tip opening displacement) fatigue crack precast test with the used steel Q370qE in bridge.Respectively tested different thickness mather ...
Qi Ming Yu, Hao Liang Sa, Si Shen, Qian Long Yang, Pei Ao, Xiao Jing Liao   +5 more
core   +1 more source