Results 51 to 60 of about 116,211 (311)

Buoyancy-driven crack propagation: the limit of large fracture toughness [PDF]

open access: yes, 2007
We study steady vertical propagation of a crack filled with buoyant viscous fluid through an elastic solid with large effective fracture toughness. For a crack fed by a constant flux Q, a non-dimensional fracture toughness K=Kc/(3μQm3/2)1/4 describes the
Roper, S.M.   +3 more
core   +1 more source

Effects of Niobium addition on dynamic mechanical behavior and fracture properties of iron-aluminide-based alloys

open access: yesJournal of Materials Research and Technology, 2022
The compressive mechanical behavior and fracture characteristics of FeAl intermetallic alloys containing 0–9 at.% Nb were investigated over a wide strain rate range of 10−3 s−1 to 5 × 103 s−1.
Chi-Feng Lin   +2 more
doaj   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora   +4 more
wiley   +1 more source

Experimental study on quasi-static tensile mechanical properties of TC11 titanium alloy at room temperature

open access: yesJournal of Hebei University of Science and Technology, 2017
According to the tensile properties of typical aerospace material TC11 titanium alloy, the stress-strain relationship is studied using the quasi-static tensile test at different strain rates, and the tensile fracture morphology is analyzed with SEM.
Qiulin NIU, Ming CHEN, Weiwei MING
doaj   +1 more source

How the clinical dosage of bone cement biomechanically affects adjacent vertebrae

open access: yesJournal of Orthopaedic Surgery and Research, 2020
Objective This study evaluated the biomechanical changes in the adjacent vertebrae under a physiological load (500 N) when the clinically relevant amount of bone cement was injected into fractured cadaver vertebral bodies.
Xu-shi Chen   +4 more
doaj   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

open access: yesAdvanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao   +3 more
wiley   +1 more source

Application of the strain energy density criterion to ductile fracture [PDF]

open access: yes, 1985
The strain energy density criterion due to Sih is used to predict fracture loads of two thin plates subjected to large elastic-plastic deformation. The prediction is achieved with a finite element analysis which is based on Hill's variational principle ...
Chow CL, 徐纪林
core   +1 more source

Experimental and Numerical Fracture Characterization of DP1180 Steel in Combined Simple Shear and Uniaxial Tension

open access: yesMetals, 2023
Current tests for plane stress characterization of fracture in automotive sheet metals include simple shear, uniaxial, plane strain, and biaxial tension, but there is a significant gap between shear and uniaxial tension.
Farinaz Khameneh   +2 more
doaj   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney   +2 more
wiley   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat   +7 more
wiley   +1 more source

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