Results 121 to 130 of about 41,939 (274)

Influence of Temperature on the Reliability of Graphene‐Based Ozone Sensors

open access: yesSmall, EarlyView.
The reliability and stability of inkjet‐printed graphene flake sensors are evaluated. Stress assessments take place in ozone‐rich environments and at elevated temperatures, with the observation of a change in resistance. Surface‐sensitive techniques serve to investigate the failure and degradation mechanisms of printed graphene.
Archa Jain   +9 more
wiley   +1 more source

Energy absorption mechanisms during crack propagation in metal matrix composites [PDF]

open access: yes
The stress distributions around individual fibers in a unidirectional boron/aluminum composite material subjected to axial and transverse loadings are being studied utilizing a generalized plane strain finite element analysis.
Adams, D. F., Murphy, D. P.
core   +1 more source

Laser‐Direct Printed 2D Material‐Based Heterostructure for the Fabrication of Electronic Devices

open access: yesSmall, EarlyView.
The Digital Laser‐Induced Forward Transfer (LIFT) approach is employed to pattern and stack 2D materials with micrometer‐scale precision. PdSe2 and MoSe2 are assembled into vertical p–n junctions, with graphene serving as a transparent electrode. The resulting laser‐transferred heterostructures exhibit high material quality and stable rectifying ...
Ilias Cheliotis   +12 more
wiley   +1 more source

Mechanics of damping for fiber composite laminates including hygro-thermal effects [PDF]

open access: yes
An integrated mechanics theory was developed for the modeling of composite damping from the micromechanics to the laminate level. Simplified, design oriented equations based on hysteretic damping are presented for on-axis plies, off-axis plies, and ...
Chamis, Christos C., Saravanos, D. A.
core   +1 more source

Filling a Gap in Materials Mechanics: Nanoindentation at High Constant Strain Rates up to 105 s−1

open access: yesSmall, EarlyView.
A piezoelectric nanoindentation platform enables constant strain‐rate testing up to 105 s−1, extending experimental capabilities to extreme deformation regimes. Distinct hardness upturns are revealed across crystalline and amorphous materials, verified as intrinsic responses through quasi‐static reloading.
Lalith Kumar Bhaskar   +14 more
wiley   +1 more source

About the Ageing‐Induced Modifications of Physical‐Chemical and Electrical Properties of Polyimide (PMDA‐ODA) Under Gamma Radiation and High Temperatures

open access: yesHigh Voltage, EarlyView.
ABSTRACT This study investigates the effects of radiation‐induced ageing on the physical, chemical, mechanical and electrical properties of Poly[4,4′‐oxydiphenylene‐ pyromellitimide] (PMDA‐ODA) polyimide, a high‐performance insulation material widely used in aerospace applications.
Simone Vincenzo Suraci   +3 more
wiley   +1 more source

Composite structural materials [PDF]

open access: yes
Transverse properties of fiber constituents in composites, fatigue in composite materials, matrix dominated properties of high performance composites, numerical investigation of moisture effects, numerical investigation of the micromechanics of composite
Ansell, G. S.   +2 more
core   +1 more source

Mechanical Properties and Quantitative Analytical Modelling of Micro/Nanocellulose Co‐Modified Insulating Papers With Different Aspect Ratios

open access: yesHigh Voltage, EarlyView.
ABSTRACT The incorporation of nanocellulose‐doped insulating paper into the material composition of a given structure has been demonstrated to enhance the material’s mechanical properties and retard the development of cracks. However, the effects of different length‐to‐diameter ratios of nanocellulose are different.
Siyu Wang   +5 more
wiley   +1 more source

Simplified composite micromechanics for predicting microstresses [PDF]

open access: yes
A unified set of composite micromechanics equations is summarized and described. This unified set is for predicting the ply microstresses when the ply stresses are known.
Chamis, C. C.
core   +1 more source

Integrated control of a nanoindenter and X‐ray nanodiffraction for automated in situ nanomechanical studies

open access: yesJournal of Synchrotron Radiation, EarlyView.
This work presents a software‐level integration of nanoindenter control directly into a beamline control system, enabling fully synchronized and automated in situ experiments through unified, real‐time coordination of mechanical loading and X‐ray nanodiffraction measurements.X‐ray diffraction (XRD) combined with in situ mechanical testing is a powerful,
Anton Davydok   +4 more
wiley   +1 more source

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