Zobrazeno 1 - 10
of 16
pro vyhledávání: '"R. G. O'Donnell"'
Autor:
R. L. Woodward, R. G. O'Donnell
Publikováno v:
Journal of Materials Science. 35:4319-4324
A 95wt%W 3.5wt%Ni 1.5wt%Fe alloy is strained to failure in uniaxial tension at temperatures in the range −100°C to 300°C. The fracture surfaces of the tensile specimens are examined and the contributions from the fracture mechanisms: tungsten-tun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b701e8d188b67a5bddba782a9e3b1001
https://doi.org/10.1023/a:1004840503664
https://doi.org/10.1023/a:1004840503664
Autor:
R. L. Woodward, R. G. O'Donnell
Publikováno v:
Journal of Materials Science. 35:4067-4072
Quantitative metallographic methods are used to relate alloy ductility to microstructural fracture mechanisms for ten tungsten-nickel-iron alloys with Ni/Fe ratios of 7 : 3 and 1 : 1 and over the tungsten composition range 87.5 to 97.5 weight percent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec447d4011ee27ae83318662bf1cd9ce
https://doi.org/10.1023/a:1004886221158
https://doi.org/10.1023/a:1004886221158
Publikováno v:
Radiocarbon. 40:629-640
Céide Fields is a 12 km2 Neolithic field system in North Mayo in the west of Ireland. The fields, enclosed by an integrated system of stone walls, have been preserved intact by a cover of blanket bog that is >4 m deep in places. At many locations wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3b38cf80876b10fc8d90a2ee52f27b8
https://doi.org/10.1017/s0033822200018567
https://doi.org/10.1017/s0033822200018567
Publikováno v:
International Journal of Impact Engineering. 15:605-618
Summary Experiments in which both confined and unconfined ceramic targets are perforated by pointed and blunt projectiles are described, and a correlation is established between increased degree of fragmentation and reduced ceramic toughness. Front c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e817ce20546e184e9b5ca36efe81fb1
https://doi.org/10.1016/0734-743x(94)90122-2
https://doi.org/10.1016/0734-743x(94)90122-2
Publikováno v:
Journal of Materials Science. 27:6411-6416
Experiments are described on (i) the simple Taylor test where a flat-ended projectile mushrooms against a semi-infinite “rigid target”, (ii) penetration of conically tipped cylindrical projectiles into semi-infinite targets, (iii) the use of modi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8fe763b7fb7e920043fa0cbbc88e47e
https://doi.org/10.1007/bf00576292
https://doi.org/10.1007/bf00576292
Publikováno v:
Journal of Materials Science. 27:6490-6494
The effect of sinter duration on the tensile strength and ductility in tension of a 95%W-3.5%Ni-1.5%Fe alloy was shown to be negligible. The alloy showed a broad ductile to brittle transition as the testing temperature was reduced below 100°C, and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39eb54cd320c1c452c911a4533462bfc
https://doi.org/10.1007/bf00576302
https://doi.org/10.1007/bf00576302
Autor:
R. G. O'Donnell
Publikováno v:
Journal of Materials Science Letters. 11:1227-1230
On etudie les caracteristiques de fragmentation des ceramiques utilisees dans les boucliers pare-balles, et on examine les relations entre les aires superficielles creees, la microstructure de la ceramique et les performances balistiques.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed5e5ca98a040b8effcf657bda83afba
https://doi.org/10.1007/bf00729775
https://doi.org/10.1007/bf00729775
Autor:
R. G. O'Donnell
Publikováno v:
Journal of Materials Science Letters. 10:685-688
On etudie les caracteristiques de fragmentation de la plaque frontale ceramique de composites soumis a l'impact d'un projectile, et les relations entre la distribution des dimensions des fragments, la tenacite et les performances balistiques
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a55e83280ec62f4035bb4baba8320b3
https://doi.org/10.1007/bf00722768
https://doi.org/10.1007/bf00722768
Publikováno v:
International Journal of Impact Engineering. 11:93-106
A correlation is confirmed between the appearance of velocity discontinuities in the finite element simulation of dynamic deformation problems and observed adiabatic shear failures. It is shown that such velocity discontinuities can be identified by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7eb18f0f5cc68edcb3d6f274c73cffe
https://doi.org/10.1016/0734-743x(91)90033-c
https://doi.org/10.1016/0734-743x(91)90033-c
Autor:
R. L. Woodward, R. G. O’donnell
Publikováno v:
Metallurgical Transactions A. 21:744-748
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb0b91e3800e61d845186cfe9cdb2541
https://doi.org/10.1007/bf02671946
https://doi.org/10.1007/bf02671946