Results 31 to 40 of about 24,665,488 (153)

Experimental testing and finite element analysis of polyurethane adhesive joints under Mode I loading and degradation conditions

open access: yese-Polymers
The use of adhesive joints in marine environments for extended periods and under adverse environmental conditions leads to accelerated adhesive degradation.
Alía Cristina   +3 more
doaj   +1 more source

On Sliding Mode Observers for Systems with Unknown Inputs [PDF]

open access: yes, 2007
International audienceThis paper considers the problem of designing an observer for a linear system subject to unknown inputs. This problem has been extensively studied in the literature with respect to both linear and nonlinear (sliding mode) observers.
Floquet, Thierry   +8 more
core   +1 more source

Mode I stress intensity factor with various crack types

open access: yesFracture and Structural Integrity, 2022
Presence of cracks in mechanical components needs much attention, where the stress field is affected by cracks and the propagation of cracks may be occurred causing the damage.
Ehab Samir Mohamed Mohamed Soliman
doaj   +1 more source

Fracture toughness in SPCC/CFRP hybrid laminates: Mode I and mode II perspectives

open access: yesResults in Engineering
Hybrid composites using adhesive joints are gaining popularity in various industries as their various material combinations can create certain advantages. This research focuses on examining the mode I and mode II fracture toughness characteristics of the
Ariyana Dwiputra Nugraha   +6 more
doaj   +1 more source

Development of a Finite Element Methodology for Modelling Mixed-Mode Delamination Growth [PDF]

open access: yes, 2007
A critical failure mechanism for composite skin-stiffened structures in compression is separation of the skin and stiffener, which can be considered analogous to interlaminar cracking.
Degenhardt, Richard   +4 more
core  

Stationarity of I-mode operation and I-mode divertor heat fluxes on the ASDEX Upgrade tokamak

open access: yesNuclear Materials and Energy, 2019
Recent I-mode investigations from the ASDEX Upgrade tokamak are reported. It is shown that neutral-beam-injection heated I-modes can be stationary, which is important in terms of extrapolability towards future fusion devices.
T. Happel   +20 more
doaj   +1 more source

External cavity mode structure of a two-mode VCSEL subject to optical feedback [PDF]

open access: yes, 2007
We consider a multi-transverse-mode vertical-cavity surface-emitting laser (VCSEL) subject to optical feedback. The system is modeled by a partial differential equation for the spatial carrier population, which is coupled to delay differential equations ...
Green, K   +5 more
core   +1 more source

Experimental Study on Delamination of Composite Laminates with 0°/45° Interface under Mode I, Mode II and Mixed-mode I/II Loading

open access: yesJournal of Aeronautical Materials, 2018
High performance carbon-reinforced composite materials have become important aeronautical materials. During the service time, the delamination fracture of composite structures is a common failure mode.
WANG Yana, CHEN Xinwen, GONG Yu
doaj   +1 more source

SMEs entry mode decision making process: Rational or cybernetic? [PDF]

open access: yes, 2012
Entry mode choice is a critical decision when a firm expends its business to foreign markets. By applying rational and cybernetic strategies to international strategic decision-making process, this paper investigates how small and medium sized firms ...
Quan, Rose
core   +1 more source

Identifying Key Metabolites in South African Medicinal Plants Using Dual Electrospray Ionization Metabolomics

open access: yesPlants
Despite growing interest in South African medicinal plants, advanced metabolomic workflows that integrate positive (ESI+) and negative (ESI−) ionization modes in UPLC-MS/MS remain sparsely applied to South African flora, and especially to Acorus calamus ...
Mmamudi Anna Makhafola   +7 more
doaj   +1 more source

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