Results 11 to 20 of about 8,785,612 (244)

Design of Sliding Mode Autopilot with Steady-state Error Elimination for Autonomous Underwater Vehicles [PDF]

open access: yes, 2006
Autonomous Underwater Vehicles (AUVs) have nonlinear and time-varying behaviour and unmodelled dynamics. This paper describes the design, development and evaluation of nonlinear sliding mode autopilot system for an AUV to control the speed, steering and ...
Shi, Juan
core   +7 more sources

Effects of stitching on delamination of satin weave carbon-epoxy laminates under mode I, mode II and mixed-mode I/II loadings [PDF]

open access: yes, 2010
The objective of the present study is to characterize the effect of modified chain stitching on the delamination growth under mixed-mode I/II loading conditions.
Trabelsi, Walid   +2 more
core   +1 more source

Mixed-Mode Delamination Growth Prediction in Stiffened CFRP Panels by Means of a Novel Fast Procedure

open access: yesApplied Sciences, 2019
Carbon fiber reinforced plastic (CFRP) structures are highly sensitive to delaminations, resulting from low energy impacts or manufacturing defects.
Andrea Sellitto   +4 more
doaj   +1 more source

A thermodynamically consistent derivation of a frictional-damage cohesive-zone model with different mode i and mode II fracture energies [PDF]

open access: yes, 2015
The present paper deals with the derivation of an interface model characterized by macroscopic fracture energies which are different in modes I and II, the macroscopic fracture energy being the total energy dissipated per unit of fracture area.
Serpieri, R   +9 more
core   +1 more source

Predicting mode II delamination suppression in z-pinned laminates [PDF]

open access: yes, 2012
A finite element model for predicting delamination resistance of z-pin reinforced laminates under the mode-II load condition is presented. End notched flexure specimen is simulated using a cohesive zone model.
Bianchi, Francesco, Zhang, Xiang
core   +1 more source

Delivering interlaminar reinforcement in composites through electrospun nanofibres

open access: yesAdvanced Manufacturing: Polymer & Composites Science, 2019
Electrospun nonwoven veils comprising thermoplastic fibres (average diameter 400–600 nm) based on polysulfone (PSU), polyamide (PA-6,6), and polyetherimide (PEI) have been fabricated and used as interlaminar reinforcements in carbon fibre composites ...
T. R. Pozegic   +5 more
doaj   +1 more source

Effect of loading mode and impact velocity on crack propagation of coal

open access: yesMeikuang Anquan, 2021
In order to study the influence of loading mode and impact velocity on coal crack propagation law, asymmetric semi-circular bend specimens were used to develop test and numerical simulation with multiple impact speeds under three loading modes of mode Ⅰ,
FAN Guowei, SUN Zhuang, SHANG Junning
doaj   +1 more source

Mode I and Mode II Delamination of Flax/Epoxy Composite Laminate

open access: yesMATEC Web of Conferences, 2018
In recent decades, natural fibres are getting their attention as reinforcement in composite materials. This is because natural fibres are environmental friendly.
Rajendran Thamilarasu S.   +3 more
doaj   +1 more source

Fracture resistance of shell-steel reactor steel with mixed deformation modes for justification of extension of nuclear power plants lifetime

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2017
Preliminary thermomechanical loading promotes increase of resistance to brittle fracture of heat-resistant steels with fractures and is the fundamental basis of the perspective method of increasing the resource for ensuring safe operation of power ...
Pokrovsky Volodymyr V.   +2 more
doaj   +7 more sources

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