Direct Evaluation of Strain and Strain Distribution Using Grid Method during Shear Deformation of Metal Matrix Composites
A grid method is applied to measure the specimen's strain during dynamic deformation in the split-Hopkinson torsional bar(SHTB) experiments. A streak camera is used to record the motion of an inclined grid pattern(5 lines/mm)previously formed on the outer surface of the specimen. The average sh...
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| Veröffentlicht in: | JSME International Journal Series A Solid Mechanics and Material Engineering 1998/10/15, Vol.41(4), pp.569-575 |
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| container_title | JSME International Journal Series A Solid Mechanics and Material Engineering |
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| creator | IKEDA, Shushi KISHIDA, Keizo NAKANO, Motohiro |
| description | A grid method is applied to measure the specimen's strain during dynamic deformation in the split-Hopkinson torsional bar(SHTB) experiments. A streak camera is used to record the motion of an inclined grid pattern(5 lines/mm)previously formed on the outer surface of the specimen. The average shear strain of the metal matrix composites(MMC) is successfully obtained in a large strain range by analyzing frequency of the streak image. The nominal shear strain evaluated by the conventional SHTB method agrees well with the directly measured strain for these materials. Microscopic strain distribution in MMC is also measured by observing a diffraction grating(600 lines/mm)on the specimen's surface in quasi-static testings. Localization of the shear strain becomes strong with increasing volume fraction of the reinforcement, and would reduce ductility of the composite materials. |
| doi_str_mv | 10.1299/jsmea.41.569 |
| format | Article |
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A streak camera is used to record the motion of an inclined grid pattern(5 lines/mm)previously formed on the outer surface of the specimen. The average shear strain of the metal matrix composites(MMC) is successfully obtained in a large strain range by analyzing frequency of the streak image. The nominal shear strain evaluated by the conventional SHTB method agrees well with the directly measured strain for these materials. Microscopic strain distribution in MMC is also measured by observing a diffraction grating(600 lines/mm)on the specimen's surface in quasi-static testings. Localization of the shear strain becomes strong with increasing volume fraction of the reinforcement, and would reduce ductility of the composite materials.</description><identifier>ISSN: 1344-7912</identifier><identifier>EISSN: 1347-5363</identifier><identifier>DOI: 10.1299/jsmea.41.569</identifier><language>eng</language><publisher>Tokyo: The Japan Society of Mechanical Engineers</publisher><subject>Analysing. 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Standards</subject><subject>Applied sciences</subject><subject>Composite Material</subject><subject>Exact sciences and technology</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Grid Method</subject><subject>Impact Strength</subject><subject>Material Testing</subject><subject>Measurement and testing methods</subject><subject>Measurement methods and techniques in continuum mechanics of solids</subject><subject>Metals. 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| identifier | ISSN: 1344-7912 |
| ispartof | JSME International Journal Series A Solid Mechanics and Material Engineering, 1998/10/15, Vol.41(4), pp.569-575 |
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| subjects | Analysing. Testing. Standards Applied sciences Composite Material Exact sciences and technology Fundamental areas of phenomenology (including applications) Grid Method Impact Strength Material Testing Measurement and testing methods Measurement methods and techniques in continuum mechanics of solids Metals. Metallurgy Physics Plasticity Solid mechanics Streak Photography Stress analysis Structural and continuum mechanics Torsion |
| title | Direct Evaluation of Strain and Strain Distribution Using Grid Method during Shear Deformation of Metal Matrix Composites |
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