Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Vernon T. Bechel"'
Publikováno v:
High Performance Polymers. 25:363-376
In this article, initial steps were taken in the study of processing mixtures of a polymer and a preceramic polymer to produce a hybrid material that contains a region of gradual transformation from a polymer to a ceramic. It is thought to be a first
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fab0c87aeae006645942cb64a180f2d
https://doi.org/10.1177/0954008312468351
https://doi.org/10.1177/0954008312468351
Autor:
Sirina Safriet, Eric Fossum, Vernon T. Bechel, Marilyn R. Unroe, Bernard R. McKellar, Narayanan Venkat, Janis M. Brown
Publikováno v:
High Performance Polymers. 25:399-415
The problem of phase separation in polycarbosilane (Starfire resin)–Matrimid thermoset blend structures, designed for thermal protection applications, was addressed in this study. The structural design of the compatibilizers synthesized via a hydro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86992eaebf5b65347e73ca099a48ab60
https://doi.org/10.1177/0954008312466879
https://doi.org/10.1177/0954008312466879
Publikováno v:
Composites Part B: Engineering. 36:171-182
Three structural carbon/polymer composites (IM7/977-2, IM7/977-3, and IM7/5250-4) were thermally cycled between liquid nitrogen (LN 2 ) temperature and an elevated temperature of 120 or 177 °C. The extent of ply-level micro-cracks was measured as a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d15abd1dd5e3d2331d2ebf0fb763923b
https://doi.org/10.1016/j.compositesb.2004.03.001
https://doi.org/10.1016/j.compositesb.2004.03.001
Autor:
Vernon T. Bechel, Ran Y. Kim
Publikováno v:
Composites Science and Technology. 64:1773-1784
Six carbon/polymer composites (three materials, two lay-ups each) were cryogenically cycled by repeated submersion of 5 cm × 5 cm flat plates in liquid nitrogen (LN2). The materials and lay-ups were chosen to study the density of ply-level micro-cra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39973bfe8342fd26110cfdb047e30638
https://doi.org/10.1016/j.compscitech.2003.12.007
https://doi.org/10.1016/j.compscitech.2003.12.007
Publikováno v:
Composites Part A: Applied Science and Manufacturing. 34:663-672
An apparatus was developed to thermally cycle coupon-sized mechanical test specimens to −196 °C. Using this device, IM7/5250-4 carbon/bismaleimide cross-ply ([0/90]2S and [90/0/90/0/90/0/90/0/90]) and quasi-isotropic ([0/45/−45/90]S) laminates w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4603cad0430337963724925f77e86de
https://doi.org/10.1016/s1359-835x(03)00054-x
https://doi.org/10.1016/s1359-835x(03)00054-x
Autor:
Vernon T. Bechel, Gyaneshwar P. Tandon
Publikováno v:
Experimental Mechanics. 42:200-205
A simple optical method of observing and tracking interface failure in transparent matrix composites is developed to extend the range of material systems that can be tested with the cruciform test for measuring the normal strength of a bi-material in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::086e76da84f3fae51aa03bbd43cc985a
https://doi.org/10.1007/bf02410884
https://doi.org/10.1007/bf02410884
Autor:
Vernon T. Bechel, Gyaneshwar P. Tandon
Publikováno v:
Mechanics of Advanced Materials and Structures. 9:1-17
The small size and low transverse modulus of commercial graphite fibers make it difficult to apply the cruciform test [1, 2] to measure interfacial normal strength of graphite/epoxy composites. The implications of cruciform testing composites with gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8764b4e14fc9ee702892491674506854
https://doi.org/10.1080/153764902317224842
https://doi.org/10.1080/153764902317224842
Autor:
Vernon T. Bechel, V.A. Buryachenko
Publikováno v:
Composites Science and Technology. 60:2465-2469
A modification of the volume integral equation (VIE) method is proposed for the solution of elastostatic 2-D problems in unbounded solids containing interacting multiple fibers. The efficiency of the VIE method developed by Lee and Mal (Lee, J., Mal,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e10826c236527c5b39583e4ab42fe48
https://doi.org/10.1016/s0266-3538(00)00041-5
https://doi.org/10.1016/s0266-3538(00)00041-5
Publikováno v:
Composites Science and Technology. 60:2281-2295
In this study, the cruciform geometry is utilized to evaluate the interfacial normal strength in unidirectional SCS-0/epoxy composites by using single-fiber specimens. These model specimens are incrementally loaded in tension to failure with a specia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf4a8a0e1501f06eb4616cc661c8998c
https://doi.org/10.1016/s0266-3538(00)00020-8
https://doi.org/10.1016/s0266-3538(00)00020-8
Autor:
Vernon T. Bechel, Nancy R. Sottos
Publikováno v:
Journal of Materials Science. 34:3471-3478
An experiment was designed and constructed to perform fiber pushout tests at elevated temperatures in a controlled environment. Preliminary pushout tests on both a pristine and a transversely fatigued SiC/Ti-6-4 composite were conducted in atmospheri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93247a5db81fb89829a7b01f0912eb3f
https://doi.org/10.1023/a:1004657804853
https://doi.org/10.1023/a:1004657804853