Results 41 to 50 of about 8,567 (256)

Determining the Cohesive Length of Rock Materials by Roughness Analysis

Geosciences
In this research, the cohesive length of various rock types is measured using quantitative fractography alongside a recently developed multifractal analysis.
Saeed Aligholi, Manoj Khandelwal, Ali Reza Torabi   +2 more
doaj   +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

Advanced Electron Microscopy and Microcomputed Tomography Analysis of Single‐Crystal Ni‐Base Superalloys After Short‐Term Multiaxial Creep

Advanced Engineering Materials, EarlyView.
This work studies the anisotropic behavior of circular notched tensile specimens of Ni‐base superalloy single crystals during high‐temperature tensile creep along [001], [110], and [111]. Correlative scale‐bridging imaging of specimens reveals early rupture along [110] because 1) plastic deformation proceeds faster at notch center; 2) more (brittle ...
Leonardo Agudo Jácome, Lijie Cao, Christoph Somsen, Johannes Boes, René Hesse, Werner Theisen, Gunther Eggeler   +6 more
wiley   +1 more source

Prediction method for fracture behavior of casting materials under uniaxial tension considering effect of pores

Cailiao gongcheng
Defects are the main factors affecting fracture behavior of casting materials. The fracture behavior of high pressure casting aluminium alloy is predicted using Gurson-Tvergaard-Needleman （GTN） damage model combined with finite element simulation ...
QIU Zhongyuan, YANG Yutong, ZHENG Jiang, SUN Xiaowang, WANG Xianhui, HUANG Shiyao   +5 more
doaj   +1 more source

On the role of microstructure in finite fracture mechanics

Procedia Structural Integrity, 2016
AbstractTheoretical predictions using Finite Fracture Mechanics (FFM) normally treat the material as a homogeneous continuum. However, the use of FFM involves (or implies) a material length parameter, L, which may or may not be constant depending on the version of FFM used.
openaire   +1 more source

Fatigue crack onset by Finite Fracture Mechanics

Procedia Structural Integrity, 2019
Abstract The paper investigates the fatigue crack/notch sensitivity by the coupled criterion of Finite Fracture Mechanics (FFM). The approach involves two parameters: the plain specimen fatigue limit, and the threshold value of the stress intensity factor range for fatigue crack growth. Useful analytical relationships are presented.
Alberto Sapora, Pietro Cornetti, Alberto Campagnolo, Giovanni Meneghetti   +3 more
openaire   +5 more sources

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Intermittent vibrations accelerate fracture healing in sheep [PDF]

Acta Cirúrgica Brasileira, 2019
Purpose: To investigate the effect of intermittent vibration at different intervals on bone fracture healing and optimize the vibration interval. Methods: Ninety sheep were randomized to receive no treatment (the control group), incision only (the sham ...
Degong Mu, Jing Yu, Junhao Lin, Chen Li, Baohui Hao, Feng Gu, Chao Liu, Lei Tan, Dong Zhu, Xizheng Zhang   +9 more
doaj   +1 more source

Continuous Stiffness Graded Metal–Ceramic Femoral Stems: UMAT‐Based Design and Finite Element Assessment

Advanced Engineering Materials, EarlyView.
Functionally graded metal–ceramic femoral stems are engineered through continuous UMAT‐based stiffness tailoring, eliminating discrete material interfaces while enhancing biomechanical compatibility. Low‐index power‐law gradation optimizes load transfer, reduces stress shielding, and controls implant–bone micromotion, highlighting a materials‐design ...
Rihem Nouira, Sameh Elleuch, Hanen Jrad
wiley   +1 more source