Results 11 to 20 of about 3,802 (230)

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   +1 more source

Experimental investigation on compressive properties of three-dimensional five-directional braided composites in hygrothermal environment

open access: yesScience and Engineering of Composite Materials, 2022
This article describes work concerning the compressive properties in hygrothermal environment of three-dimensional (3D) five-directional braided composites.
Guo Ying, Yan Shi
doaj   +1 more source

Interplay between Swelling Kinetics and Nanostructure in Perfluorosulfonic Acid Thin-Films: Role of Hygrothermal Aging [PDF]

open access: yes, 2019
Impacts of processing, storage, and operation on thin-film perfluorosulfonic acid (PFSA) ionomer coatings used in electrodes of electrochemical devices remains unestablished.
Kushner, DI, Kusoglu, A, Tesfaye, M
core   +2 more sources

Effect of cyclic hygrothermal aging on interlaminar fracture toughness of T700/TDE86 carbon composite

open access: yesJournal of Aeronautical Materials, 2019
The artificial accelerated cyclic hygrothermal aging test was conducted on T700/TDE86 carbon fiber reinforced resin matrix composites, and the effects of different cyclic hygrothermal aging days on interlaminar fracture toughness of composites with open ...
XU Kailong   +4 more
doaj   +1 more source

Dimensional stability and mechanical performance evolution of continuous carbon fiber reinforced polyamide 6 composites under hygrothermal environment

open access: yesJournal of Materials Research and Technology, 2021
This study aimed to investigate moisture absorption behaviors, dimensional stability, and mechanical performance evolution of continuous carbon fibers reinforced with polyamide 6 composites (CF/PA6) under a hygrothermal environment.
Yongpeng Lei   +3 more
doaj   +1 more source

An aging evaluation of the bearing performances of glass fiber composite laminate in salt spray fog environment [PDF]

open access: yes, 2019
The aim of the present paper is to assess the bearing performance evolution of pinned, glass-composite laminates due to environmental aging in salt-spray fog tests.
Bruzzaniti P. G.   +4 more
core   +1 more source

Evolution of physico-chemical and mechanical properties of bonded epoxy assemblies during hygrothermal cyclic aging

open access: yesMechanics & Industry, 2023
This work investigates the hygrothermal cyclic aging of epoxy-based bonded assemblies. The focus is given here to severe long-term environmental conditions. The aging procedure is performed between 70° C with a relative humidity of 90% and −40° C without
Obeid Hassan   +6 more
doaj   +1 more source

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