Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Gregory Freihofer"'
Autor:
Remelisa Esteves, Johnathan Hernandez, Khanh Vo, Ryan Hoover, Gregory Freihofer, Seetha Raghavan
Publikováno v:
AIP Advances, Vol 9, Iss 5, Pp 055201-055201-7 (2019)
Chromium-doped α-alumina is naturally photo-luminescent with spectral properties that are characterized by R-lines with two distinct peaks known as R1 and R2. When the material is subjected to stress, shifts in the R-lines occur, which is known as t
Externí odkaz:
https://doaj.org/article/b8db69e643674c5e9768d919bea469f2
Publikováno v:
International Journal of Smart and Nano Materials, Vol 4, Iss 4, Pp 212-228 (2013)
The use of carbon nanotubes in composite hard armor is discussed in this study. The processing techniques to make various armor composite panels consisting of Kevlar®29 woven fabric in an epoxy matrix and the subsequent V50 test results for both 44
Externí odkaz:
https://doaj.org/article/362cfb3f4b1e417283698f4a7c584e0c
Publikováno v:
AIP Advances, Vol 5, Iss 3, Pp 037139-037139-5 (2015)
The piezospectroscopic effect, relating a material’s stress state and spectral signature, has recently demonstrated tailorable sensitivity when the photo-luminescent alpha alumina is distributed in nanoparticulate form within a matrix. Here, the st
Externí odkaz:
https://doaj.org/article/91ba9524daf34aaa9eff488692f31eed
Publikováno v:
NDT & E International. 75:65-71
The development of piezospectroscopic (PS) composites has enabled the creation of a non-destructive evaluation (NDE) technique which integrates piezospectroscopy, digital image correlation (DIC) and analytical multi-scale mechanics to map the elastic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::608855178366c20cc74566da8a59cd85
https://doi.org/10.1016/j.ndteint.2015.07.002
https://doi.org/10.1016/j.ndteint.2015.07.002
Publikováno v:
Composites Science and Technology. 116:41-49
Kevlar® 29 impact resistant composites are commonly employed for a wide range of applications including ballistic resistant armor. Advancement in the composite’s energy absorption and the reduction of weight are critical for increasing their effec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0485a530878b3aab0270f7f896553e25
https://doi.org/10.1016/j.compscitech.2015.05.007
https://doi.org/10.1016/j.compscitech.2015.05.007
Publikováno v:
Acta Materialia. 81:211-218
The piezospectroscopic (PS) properties of chromium-doped alumina allow for embedded inclusion mechanics to be revisited with unique experimental setups that probe the particles’ state of stress when the composite is under applied load. These experi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80371a1a74ca74f00b855ca1ecce53de
https://doi.org/10.1016/j.actamat.2014.08.003
https://doi.org/10.1016/j.actamat.2014.08.003
Publikováno v:
International Journal of Smart and Nano Materials, Vol 4, Iss 4, Pp 212-228 (2013)
The use of carbon nanotubes in composite hard armor is discussed in this study. The processing techniques to make various armor composite panels consisting of Kevlar®29 woven fabric in an epoxy matrix and the subsequent V50 test results for both 44
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5279dff49fdd6bc1c239090977cfbb87
https://doaj.org/article/362cfb3f4b1e417283698f4a7c584e0c
https://doaj.org/article/362cfb3f4b1e417283698f4a7c584e0c
Publikováno v:
Applied Spectroscopy. 67:321-328
A pseudo-Voigt (PV) function is used as a representation of the Stoke's phonon frequency distributions for a multi-walled nanotube (MWNT) composite G and D doublet. Variable peak assignments with the PV function have been shown to enhance the resolut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0b1a99626a2cb4ba3d18afcb7a86f71
https://doi.org/10.1366/11-06579
https://doi.org/10.1366/11-06579
Autor:
Seetha Raghavan, Gregory Freihofer
Publikováno v:
Industrial Applications for Intelligent Polymers and Coatings ISBN: 9783319268910
Mechanical enhancement of polymers with high modulus reinforcements, such as ceramic particles, has facilitated the development of structural composites with applications in the aerospace industry where strength to efficiency ratio is of significance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe308241cf88df733d1e9b8f5294cb05
https://doi.org/10.1007/978-3-319-26893-4_4
https://doi.org/10.1007/978-3-319-26893-4_4
Publikováno v:
International Journal of Smart and Nano Materials. 3:309-320
The G and D doublet, an intrinsic Raman feature of multi-walled nanotubes (MWNTs), was monitored in an ex-situ fashion for all intermediate stages of a manufacturing process of a MWNT/polymer nanocomposite. The G peak position and D/G ratios were mon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e385d34c4fb6a96fe1079b4844e08cc
https://doi.org/10.1080/19475411.2011.652991
https://doi.org/10.1080/19475411.2011.652991