Zobrazeno 1 - 10
of 21
pro vyhledávání: '"M. A. F. Scarparo"'
Autor:
A. L. J. Munhoz, P. R. S. Wagner, M. C. F. Ierardi, A. E. Kiel, M. A. F. Scarparo, S. D. Allen
Publikováno v:
Revista de Metalurgia, Vol 34, Iss 2, Pp 197-201 (1998)
Se presenta un estudio teórico y experimental, sobre resinas termosensibles usadas en estereolitografía térmica. Se estudia el proceso de cura local mediante la aplicación de radiación infrarroja producida por el láser de CO2 (10.6 μm), el cua
Externí odkaz:
https://doaj.org/article/8b7722a50aeb4ff4a5a5a1149ec49cc7
Autor:
Alvin E. Kiel, Z. Zhiyao, A.S. Miller, Q.J. Chen, C.A. Ferrari, Susan D. Allen, M. A. F. Scarparo
Publikováno v:
Polymer. 38:2175-2181
We present an experimental and theoretical analysis of i.r. (thermal) sintering of thermosetting resins used for stereolithography. In the experimental work an epoxy resin was chosen. The optimum mix (which was quite critical) was composed of 10 part
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a10d210463cc625ce0f8a99eaed6e5b4
https://doi.org/10.1016/s0032-3861(96)00763-x
https://doi.org/10.1016/s0032-3861(96)00763-x
Publikováno v:
Journal of Applied Polymer Science. 62:491-500
We present in this article the use of infrared laser radiation to achieve localized curing in thermosensitive epoxy resin compounds. In stereolithography, the objective is to cure a localized region in a material by precisely confining the laser ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38504b4190dc9e3d4b0e36d07217bb58
https://doi.org/10.1002/(sici)1097-4628(19961017)62:3<491::aid-app7>3.0.co
https://doi.org/10.1002/(sici)1097-4628(19961017)62:3<491::aid-app7>3.0.co
Publikováno v:
Journal of Applied Polymer Science. 54:1575-1578
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7154a3152e1ca8cb050369345e6bcfee
https://doi.org/10.1002/app.1994.070541022
https://doi.org/10.1002/app.1994.070541022
Publikováno v:
Optics letters. 5(5)
Polarization spectroscopy was used for the first time known to the authors to measure the homogeneous linewidth and excited-state lifetime of an inhomogeneously broadened transition of an absorbing impurity ion in a crystalline host. The observed lin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e1bddf78039e9d3e6c8f085b0ab8690
https://pubmed.ncbi.nlm.nih.gov/19693170
https://pubmed.ncbi.nlm.nih.gov/19693170
Autor:
M. A. F. Scarparo, Michel A. Aegerter, Dayse Iara Dos Santos, C. H. Brito Cruz, Jerzy Zarzycki
We present preliminary measurements of the optical properties of Rhodamine B molecules adsorbed or trapped in porous matrices such as Vycor 7930 glass, silica xerogels and aerogels. The electronic transfer between donor and acceptor molecules adsorbe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a48802bdf1580b396f1cc12bbf679a9e
Autor:
Susan D. Allen, Djalma S. Salles, André Luiz Jardini Munhoz, Gilson Marinho, M. A. F. Scarparo
Publikováno v:
SPIE Proceedings.
In normal practice, stereolithography has been used for photosensitive resins where ultraviolet light (HeCd laser λ=0.352μm) initiates the curing process for prototypes construction. In this work we developed a new aspect of stereolithography, usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f64bdd022ec47ebd8a276cc81cf1091e
https://doi.org/10.1117/12.387564
https://doi.org/10.1117/12.387564
Autor:
Alvin E. Kiel, Susan D. Allen, Paulo R. S. Wagner, André Luiz Jardini Munhoz, M. A. F. Scarparo, Maria Clara F. Ieradi
Publikováno v:
SPIE Proceedings.
We present a theoretical and experimental study of thermosetting resins used in thermal stereolithography. In usual practice, stereolithography makes use of photosensitive resins where HeCd (0.352 micrometers ) laser ultraviolet laser initiates the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5061bdc60eec7e036b9e6aa0c2243807
https://doi.org/10.1117/12.307119
https://doi.org/10.1117/12.307119
Publikováno v:
SPIE Proceedings.
This work presents a new method to produce 3D structures, using a CO2 laser and thermosensitive resins. This method is called thermal stereolithography and is based on the spatially selective thermal curing of a resin, a filling material and a cataly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12518b0682b6c76093478c13a5bd5f97
https://doi.org/10.1117/12.180832
https://doi.org/10.1117/12.180832
Autor:
M. A. F. Scarparo, N. S. Vorobiev, C. H. Brito Cruz, Eunézio A. Thoroh de Souza, Mikhail Ya. Schelev, Alexander M. Prokhorov, Valdis E. Postovalov
Publikováno v:
19th Intl Congress on High-Speed Photography and Photonics.
A modified Imacon type streak camera with temporal resolution of 1.5 psec was used for the measurement of pulses generated by a mode locked Er fiber laser operating at 1.55 micron wavelength. The specially developed S1-PV001 image tube had an initial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c72be471f7177f86759a399352b0080
https://doi.org/10.1117/12.24075
https://doi.org/10.1117/12.24075