Results 21 to 30 of about 596,499 (212)

Hygrothermal effect on high-velocity impact resistance of woven composites

open access: yesDefence Technology, 2022
The woven glass fiber reinforced composites (GFRP) subjected to high-speed impact is investigated to identify the hygrothermal aging effect on the impact resistance.
Xiao-chen Yang, Nan Jia
doaj   +1 more source

Investigation on the influences of hygrothermal aging on the indentation size effects and micro-indentation measurements of PMMA. Part II: Analysis and modeling

open access: yesPolymer Testing, 2021
The nanoindentation results of Polymethyl Methacrylate (PMMA) after hygrothermal aging under different indentation strain rates are analyzed. The influences of hygrothermal aging on its indentation size effects (ISE) and microindentation measurements are
Hui Lin, Lin Lv, Tao Jin, Qing Yin
doaj   +1 more source

Molecular Dynamics Study on Hygrothermal Aging Mechanisms of Silicone Rubber. [PDF]

open access: yesMaterials (Basel)
Silicone rubber, primarily composed of polydimethylsiloxane (PDMS) chains, is widely used in sealing materials due to its excellent flexibility and durability. Its performance is significantly affected by environmental conditions, with humid-heat aging being a major factor of degradation.
Meng X   +5 more
europepmc   +4 more sources

Environmental Effects on Mechanical Properties of Glass/Epoxy and Fiber Metal Laminates, Part I: Hygrothermal Aging [PDF]

open access: yesMechanics of Advanced Composite Structures, 2017
In this article, the effect of hygrothermal aging on mechanical properties of fiber metal laminates (FMLs) and E-glass/epoxy (GE) composites is investigated.
Moslem Najafi   +2 more
doaj   +1 more source

Hygrothermal ageing of reprocessed polylactide [PDF]

open access: yesPolymer Degradation and Stability, 2012
The influence of an accelerated hygrothermal ageing simulation test on a commercial PLA and its three subsequent mechanically-reprocessed materials was studied. The analysis was focused on the water diffusion kinetics and the physico-chemical changes induced by the hygrothermal degradation.
Badia Valiente, José David   +3 more
openaire   +3 more sources

Hygrothermal aging effects on the mechanical properties of 3D printed composites with different stacking sequence of continuous glass fiber layers

open access: yesPolymer Testing, 2021
The present work studied the effects of hygrothermal aging on the flexure behaviors of 3D printed composites reinforced with continuous glass fibers.
Kui Wang   +5 more
doaj   +1 more source

Longitudinal Compressive Property of Three-Dimensional Four-Step Braided Composites after Cyclic Hygrothermal Aging under High Strain Rates

open access: yesApplied Sciences, 2020
The longitudinal compressive behavior of the three-dimensional four-step braided composites after cyclic hygrothermal aging was investigated using a split Hopkinson pressure bar (SHPB) apparatus under high strain rates (1100~1250 s−1, 1400~1600 s ...
Kailong Xu   +4 more
doaj   +1 more source

Hygrothermal aging of polyimide matrix composite laminates [PDF]

open access: yesComposites Part A: Applied Science and Manufacturing, 2003
Two polyimide-matrix systems were subjected to a series of hygrothermal aging experiments at various temperatures and relative humidities. For each aging condition, we measured the microcracking fracture toughness as a function of aging time. The toughness decreased with time. The rate of decrease increased with temperature and relative humidity.
John A. Nairn, Man-Hee Ha
openaire   +2 more sources

Fuel cell rejuvenation of hygrothermally aged Nafion® [PDF]

open access: yesJournal of Power Sources, 2012
Abstract Nafion ® membranes stored for long periods at 80 °C under elevated relative humidity up to 95%RH exhibit large modifications of their properties attributed to the sulfonic acid end-group condensation into sulfonic anhydrides. The present study is devoted to the membrane property rejuvenation, namely the hydrolysis of the sulfonic anhydrides
Collette, Floraine   +5 more
openaire   +4 more sources

Synthesis and hygrothermal aging of polycarbonates containing a bisphenol fluorene moiety. [PDF]

open access: yesRSC Adv
This study aims to synthesize a specific type of polycarbonate with high refractive index, low birefringence, and resistance to hygrothermal aging.
Lu T, Fang W, Zhou Q, Liu M, Wu G.
europepmc   +3 more sources

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