Results 71 to 80 of about 84,821 (263)

Study of Thickness Effect on Fracture Toughness of High Grade Pipeline Steel

MATEC Web of Conferences, 2016
The critical fracture toughness decreases when thickness of specimens increases and stress-strain field in crack tip start changing to plane strain state from plane stress state. In this paper, fracture toughness tests were carried. Based on the analysis
Zhang Hua, Zhang Hong, Zhao Xinwei, Wang Yalong, Li Na   +4 more
doaj   +1 more source

Investigations on strength of piping for non-condensable gas combustion (Part 3: Estimation of fracture strain of steel pipes subjected to hydrogen-oxygen detonation)

Nihon Kikai Gakkai ronbunshu, 2015
To assess the integrity of piping under the detonation pressure of accumulated hydrogen-oxygen, the fracture strain of the pipe material must be identified.
Akira NEBU, Koji YAMADA, Koji DOZAKI, Akitaka HIDAKA, Masahiro UCHIDA, Takahiro SONE   +5 more
doaj   +1 more source

Definition of catheter jamming: A mechanical analysis of catheter fracture tension and fracture strain. [PDF]

Technol Health Care, 2022
Li FX, Su P, Li YP, Tian MJ, Zhang HY, Gao HH.   +5 more
europepmc   +1 more source

Fracture-strain of Asphalt at Low Temperature.

Journal of The Japan Petroleum Institute, 1992
本研究は低温領域におけるアスファルトの破壊ひずみの値および破壊ひずみが温度, 載荷速度等によりどのように変動するか検討したものである。実験は著者らが新たに開発したもので, あらかじめひずみを測定した鋼板にアスファルトを塗布し, それをフラースぜい化点試験機に装着し一定温度で曲げ作用を与え, 様々な温度のアスファルトの破壊ひずみを求めるものである。実験により, 以下の結果を得た。温度が低下するに伴い破壊ひずみは減少し, 最小ひずみに漸近した。アスファルトの温度-破壊ひずみ曲線は, 載荷速度等の条件により温度軸方向に平向移動し, その形状はほぼ一定であると考えられる。また, 載荷速度を遅くした場合, その曲線は温度軸方向に平行移動した。
MORIYOSHI, Akihiro, KAWAMURA, Kazumasa
openaire   +2 more sources

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Strain Rate-Dependent Constitutive and Low Stress Triaxiality Fracture Behavior Investigation of 6005 Al Alloy

Advances in Materials Science and Engineering, 2018
In order to study the dynamic and fracture behavior of 6005 aluminum alloy at different strain rates and stress states, various tests (tensile tests at different strain rates and tensile shearing tests at five stress states) are conducted by Mechanical ...
Yong Peng, Xuanzhen Chen, Shan Peng, Chao Chen, Jiahao Li, Guowei Liu   +5 more
doaj   +1 more source

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

Advanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello, Joachim Gussone, Suzana G. Fries, Marcus Rackel, Andreas Stark, Norbert Schell, Jan Haubrich, Guillermo Requena   +7 more
wiley   +1 more source

Modeling Dislocation Cutting of γ′ Precipitates in Ni‐Base Superalloys: Linking Atomistic and Dislocation Dynamics Simulations

Advanced Engineering Materials, EarlyView.
Dislocation cutting of γ′ precipitates in Ni‐based superalloys is investigated by linking atomistic simulations with discrete dislocation dynamics. The critical cutting stress is shown to be governed by the antiphase boundary energy, while line tension effects promote edge‐preferred cutting.
Frédéric Houllé, Siwen Gao, Marc Fivel, Anxin Ma, Daria Smirnova, Sriram Anand, Arun Prakash, Julien Guénolé, Alexander Hartmaier, Erik Bitzek   +9 more
wiley   +1 more source