Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Lessa Kay Grunenfelder"'
Publikováno v:
Advanced Manufacturing: Polymer & Composites Science, Vol 6, Iss 2, Pp 72-85 (2020)
Vacuum-bag-only (VBO) prepregs fabricated with discontinuous resin (semi-pregs) on a unidirectional fiber bed reportedly exhibit high through-thickness permeability and yield high-quality laminates, even under adverse process conditions, such as poor
Publikováno v:
Advanced Manufacturing: Polymer & Composites Science, Vol 6, Iss 2, Pp 101-114 (2020)
Prepregs with discontinuous resin (semi-pregs) impart robustness to vacuum-bag-only processing of composites. Limited guidance exists for evaluating advantageous resin patterns (i.e. dry space dimensions required to achieve both efficient air evacuat
Publikováno v:
Journal of Composite Materials. 52:2847-2858
In the layup of prepreg laminates, air is inevitably entrapped between adjacent prepreg plies, yet the removal of this inter-ply air under vacuum bag cure conditions is not well understood. In this study, an in situ visualization technique was develo
Publikováno v:
High Performance Polymers. 30:731-741
A new type of polyimide, designated TriA X, has been developed for high-temperature composite applications. TriA X is a polymerized monomeric reactant (PMR)-type polyimide derived from 1,2,4,5-benzenetetracarboxylic dianhydride (PMDA), 2-phenyl-4,4
Publikováno v:
Composites Part A: Applied Science and Manufacturing. 93:88-99
Prepreg format plays a key role in part quality for composites produced using vacuum bag only (VBO) techniques. To date, however, VBO prepregs have been produced by modifying existing autoclave formats. In this work, we introduce USCpreg, a prepreg f
Autor:
Enrique Escobar de Obaldia, Pablo D. Zavattieri, Lessa Kay Grunenfelder, Steven Herrera, David Kisailus
Publikováno v:
Journal of the Mechanics and Physics of Solids. 96:511-534
The remarkable mechanical properties observed in biological composite materials relative to those of their individual constituents distinguish them from common engineering materials. Some naturally occurring high-performance ceramics, like the extern
Autor:
Pablo D. Zavattieri, Lessa Kay Grunenfelder, David Kisailus, Chanhue Jeong, Enrique Escobar de Obaldia
Publikováno v:
Journal of the Mechanical Behavior of Biomedical Materials. 48:70-85
Many biomineralized organisms have evolved highly oriented nanostructures to perform specific functions. One key example is the abrasion-resistant rod-like microstructure found in the radular teeth of Chitons (Cryptochiton stelleri), a large mollusk.
Publikováno v:
Ocean Engineering. 102:185-196
Publikováno v:
Composites Part A: Applied Science and Manufacturing. 70:132-154
Out-of-autoclave (OoA) prepreg materials and methods have gained acceptance over the past decade because of the ability to produce autoclave-quality components under vacuum-bag-only (VBO) cure. To achieve low porosity and tight dimensional tolerances
Autor:
Pablo D. Zavattieri, Brian Weden, David Kisailus, Dongsheng Li, Lessa Kay Grunenfelder, Qianqian Wang, Richard Wuhrer, Enrique Escobar de Obaldia, Christopher Salinas
Publikováno v:
Advanced Functional Materials. 24:6093-6104
Chiton are marine mollusks who use heavily mineralized and ultrahard teeth to feed on epilithic and endolithic algae on intertidal rocks. To fulfi ll this function, chiton teeth must be tough and wear-resistant. Impressive mechanical properties are a