Results 11 to 20 of about 34,989 (222)

Prediction of Fatigue Crack Growth in Metallic Specimens under Constant Amplitude Loading Using Virtual Crack Closure and Forman Model

open access: yesMetals, 2020
This paper considers the applicability of virtual crack closure technique (VCCT) for calculation of stress intensity factor range for crack propagation in standard metal specimen geometries with sharp through thickness cracks.
Sanjin Krscanski, Josip Brnic
doaj   +1 more source

Finite-element modelling of frictional behaviour between oesophagus and endoscope

open access: yesBiosurface and Biotribology, 2020
The endoscopy is the most direct and effective means for digestive tract diseases. Medical workers can conduct a series of manipulations with the help of endoscope, including checking, removing, stripping the diseased tissue or placing the stent.
Chengxiong Lin   +4 more
doaj   +1 more source

Numerical studies for effect of geometrical parameters on water jet pump performance via entropy generation analysis

open access: yesJournal of Mechanical Engineering and Sciences, 2023
This paper presented an implementation of entropy generation analysis in the main flow field of a water jet pump via the CFD method. This study aimed to identify the inefficient location of energy conversion and to analyse entropy generation sources in ...
Muhammad Penta Helios   +1 more
doaj   +1 more source

Experimental Study of the Tensile Strength and Energy Characteristics of Sandstone with Different Moisture Contents

open access: yesRenmin Zhujiang, 2021
In order to study the influence of the tensile strength and energy characteristics of sandstone with different moisture contents,this paper tests the tensile strength of sandstone with different moisture contents by the rock test press.The results show ...
LIAO Anjie, LAI Lin
doaj  

Response of patella and fibula during simulated falls: Body mass effects and differential efficacy of polyurethane damping [PDF]

open access: yesAIP Advances
Sports-related falls are a common injury mechanism, but how impact materials affect different bones is not well understood. This study used finite element analysis to examine how polyurethane (PU) foam under the foot influences patellar and fibular ...
Amir Nabavi   +2 more
doaj   +1 more source

Mechanical Properties and Damage Evolution of Heated Granite Subjected to Liquid Nitrogen Cooling

open access: yesApplied Sciences, 2022
To investigate the effect of liquid nitrogen on the granite failure process, the deterioration effect of liquid nitrogen on heated granite was investigated from experimental and theoretical perspectives.
Chunbo Zhou   +4 more
doaj   +1 more source

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

open access: yesAdvanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim   +2 more
wiley   +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

Mechanical Properties and Energy Damage Evolution Mechanism of Basalt Fiber-Modified Tailing Sand Cementation and Filling Body Mechanics

open access: yesBuildings
In order to investigate the mechanical properties of basalt fiber-doped tailing sand cemented filler and the evolution of energy damage, a uniaxial compression test was carried out on the basalt fiber-doped tailing sand cemented filler specimens to ...
Rongsen Chen, Yaoping Zhang
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

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