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Please use this identifier to cite or link to this item:
http://hdl.handle.net/10016/15847
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| Title: | Dynamic fracture-initation toughness determination of AI 7075-T651 aluminum alloy |
| Author(s): | Loya, José Antonio
Fernández-Sáez, José |
| Publisher: | ASTM International |
| Issued date: | 1-Jan-2007 |
| Citation: | Journal of Testing and Evaluation, (Jan. 2007), vol. 35, n. 1. Pp.1-6. |
| URI: | http://hdl.handle.net/10016/15847 |
| ISSN: | 0090-3973 (print)
1945-7553 (online) |
| DOI: | 10.1520/JTE100098 |
| Abstract: | We present values of the static and dynamic fracture-initiation toughness at different loading rates of the aluminum alloy Al 7075-T651 obtained on three-point bend specimens with different thicknesses and initial crack lengths. In static conditions, the critical stress intensity factor was measured according to well known procedures. The methodology of dynamic fracture initiation toughness is not yet standardized, and the dynamic tests were done with a modified Hopkinson pressure bar coupled to high-speed cameras to measure the crack mouth opening displacement CMOD of the specimens. The critical stress intensity value was obtained from the CMOD at the time that crack starts to grow. This instant was detected by means of crack gauges at the crack tip. |
| Publisher version: | http://dx.doi.org/10.1520/JTE100098 |
| Keywords: | Dynamic bending test
Dynamic initiation toughness
Modified Hopkinson pressure bar
High-speed photography |
| Rights: | © AST International |
| Appears in Collections: | DMMCTE - DFEE - Artículos de revistas
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