Characterization of carbon fiber polymer matrix composites subjected to simultaneous application of electric current pulse and low velocity impact

Hart, Robert J.

doi:10.17077/etd.xy22gm7a

Cited by 2 publications

(21 citation statements)

References 28 publications

(31 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The present work was also partially motivated by the work of Hart (2011). This work investigated coordinated impact and electrification of laminated carbon fiber composites.…”

Section: Background Informationmentioning

confidence: 99%

“…diameter hemispherical tip and was fabricated from tool steel. This tup insert was selected as it was believed that the 32-ply specimens would require significant impact energy to damage, and previous work by Hart (2011) indicated that a machined polymer tup insert would not be strong enough to withstand the impact.…”

Section: Thesis Objectivesmentioning

confidence: 99%

“…The goal of the current investigation was to perform CT imaging analysis on carbon fiber composite specimens that had been subject to low-velocity impact. The experimental setup used to perform the low-velocity impact tests employed the standard laboratory equipment and the impact procedures developed by Hart (2011). After impact characterization, the specimens were CT imaged using the Ziess METROTOM 1500 and analyzed following the basic procedure developed by Song (2014).…”

Section: Summary Of Experimental Setupmentioning

confidence: 99%

“…This result follows with the expected outcome of the impact tests, where greater impact energy leads to larger forces and deflections. was the same as was used in the previous investigations conducted by Hart (2011). As it was believed that the damage from this test would be minimal, specimens 9, 10, and 11 had the back face painted white.…”

Section: Preliminary Impact Testingmentioning

confidence: 99%

“…As mentioned in an earlier section, the initial impact energy used for specimen 1, 74.5 J, was calculated by doubling the critical energy required to initiate damage in 16ply symmetric cross-ply composite plates as determined by Hart (2011). Thus, the impact energy per ply was the same for specimen 1 tested in this study and for the 16-ply cross-ply specimens tested by Hart.…”

Section: Comparison To Previous Workmentioning

confidence: 99%

See 4 more Smart Citations

Low velocity impact damage assessment in IM7/977-3 cross-ply composites using 3D computed tomography

Demerath¹

View full text Add to dashboard Cite

Low-velocity impact damage in IM7/977-3 carbon fiber reinforced polymer (CFRP) composites was investigated using 3D computed tomography (CT). 32-ply IM7/977-3 symmetric cross-ply composites were impacted at different impact energy levels and with different impactors (DELRIN® resin flat-ended cylindrical and tool steel hemispherical strikers) using an Instron 8200 Dynatup drop-weight impact machine. The impact energies were chosen to produce slightly visible damage, characterized by short cracks on the impacted surface and little delamination on the non-impacted surface (29.27 J), and barely visible damage, characterized by indentation on the impacted surface but no visible delamination on the back surface of the specimens (20.77 J). Internal damage was assessed using the Zeiss METROTOM 1500 industrial CT scanning system, and CT images were reconstructed using VGStudio MAX and the MyVGL 2.2 viewer. To determine the extent of the damage zone, impacted 152.4 mm square composite plates were initially scanned. As the relatively large specimen size did not allow for evaluation of internal cracks and isolation of delamination at ply interfaces, smaller specimens that enclosed the damaged region (45 mm square plates) were cut out and imaged. The CT scan results showed that volume of the impact damage zone had a generally positive correlation with impact energy, maximum load, and maximum deflection, but that the relationship was generally weak. Absence of a definite correlation between damage volume and impact energy was unexpected, as the difference in the impact energy was up to 30%.

show abstract

“…The present work was also partially motivated by the work of Hart (2011). This work investigated coordinated impact and electrification of laminated carbon fiber composites.…”

Section: Background Informationmentioning

confidence: 99%

Section: Thesis Objectivesmentioning

confidence: 99%