Zobrazeno 1 - 10
of 116
pro vyhledávání: '"David T Read"'
Publikováno v:
Journal of Verification, Validation and Uncertainty Quantification. 8
It is well documented that the microstructure and properties of electrodeposited films, such as lithographie, galvanoformung, abformung (LIGA) Ni and its alloys, are highly sensitive to processing conditions hence the literature shows large discrepan
Autor:
David T. Read, Li-Anne Liew, John T. Geaney, May L. Martin, Frank W. DelRio, Nicholas Barbosa, Todd R. Christenson, Peter E. Bradley
Publikováno v:
J Micromech Microeng
The elastic-plastic properties of mesoscale electrodeposited LIGA Ni alloy specimens are investigated as a function of specimen size, strain rate, and material composition. Two material compositions are studied: a high-strength fine-grained Ni-Fe all
Publikováno v:
Eng Res Express
Photolithographically defined thin film Au dots were used as micro fiducial markers for digital image correlation (DIC), to enable two-dimensional strain measurement of 200 μm-thick LIGA (Lithographie, Galvanformung, Abformung) nickel alloys. Due to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7188be2759c4ce164c24ba4e6b19e4f
https://europepmc.org/articles/PMC9925374/
https://europepmc.org/articles/PMC9925374/
Autor:
Frank W. DelRio, John T. Geaney, Li-Anne Liew, Nicholas Barbosa, Jeffrey R. Smyth, May L. Martin, Peter E. Bradley, Todd R. Christenson, David T. Read
Publikováno v:
Mechanics of Biological Systems and Materials & Micro-and Nanomechanics & Research Applications ISBN: 9783030597641
We report the in-plane shear properties, to fracture, of 200 μm-thick LIGA nanocrystalline Ni-10%Fe and micrograined Ni-10%Co. Planar simple shear specimens were designed, fabricated and pulled to fracture using a miniature commercial tension test s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9007aa5184ded13db9f8957bef58f163
https://doi.org/10.1007/978-3-030-59765-8_19
https://doi.org/10.1007/978-3-030-59765-8_19
Autor:
Todd R. Christenson, John T. Geaney, Li-Anne Liew, Frank W. DelRio, May L. Martin, David T. Read
Publikováno v:
Sens Actuators A Phys
Two different LIGA electrodeposited nickel alloys displayed distinct fracture modes after meso-scale tensile testing. The Ni-Co alloy failed in a ductile manner, while the Ni-Fe alloy failed in a more brittle-appearing manner. Various factors affecti
Publikováno v:
Materials Research Express. 6:0950a6
Publikováno v:
Volume 3: Operations, Monitoring and Maintenance; Materials and Joining.
This paper reports an extension of a previous study that compared methods of evaluating J by the crack mouth opening displacement and by surface strain gradients. Here, the surface strain gradients are measured by three-dimensional digital image corr
Publikováno v:
Experimental Mechanics. 53:783-794
We have developed a MEMS (micro electro mechanical systems)—based method for fatigue testing of micrometer— millimeter-sized specimens of any material (hence ‘universal’). The miniature, re-usable, stand-alone fatigue test frame is fabricated
Publikováno v:
Microelectronic Engineering. 92:111-114
Electromigration (EM) of a dual damascene, test vehicle was measured using direct current (DC), alternating current (AC) followed by DC, and three rectangular-wave DC stressing conditions at 598K. In some of the experiments samples were allowed to co