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

2015 ◽  
Author(s):  
Brandon Michael Demerath
Keyword(s):  
Computed Tomography ◽  
Damage Assessment ◽  
Impact Damage ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
3D Computed Tomography

Nondestructive Methods for the Damage Assessment of Cylindrically Curved Composite Laminates Subjected to Low-Velocity Impact

2002 ◽  
Author(s):  
Oh-Yang Kwon ◽  
Jung-Kyu Jun ◽  
Yuris A. Dzenis
Keyword(s):  
Composite Laminates ◽  
Damage Assessment ◽  
Impact Damage ◽  
Acoustic Microscopy ◽  
Low Velocity Impact ◽  
Layer By Layer ◽  
Low Velocity ◽  
Velocity Impact ◽  
The Impact ◽  
Maximum Contact

Curved composite laminates appeared to be more vulnerable than flat ones to rapid transverse loading. Damage induced by low-velocity impact on the cylindrically curved composite laminates has been experimentally investigated. Graphite/epoxy shells with the radius of curvatures of 150 mm showed quite different impact response and damage behavior from that of flat laminate. Under the same impact energy level, the maximum contact force varied with the radius of curvatures, which is directly related to the impact damage. Delamination was distributed rather evenly at each interface along the thickness direction of curved laminates on the contrary to the case of flat laminates, where delamination is typically concentrated at the interfaces away from the impact point. Due to the presence of curvature, the acoustic microscopy could not be directly applied to the layer-by-layer assessment of delamination damage. As an alternative, the penetrant-enhanced X-radiography (PEXR) was introduced and the results from PEXR were compared with those from destructive examination of the cross-section by scanning electron microscopy.

Low velocity impact damage assessment of GLARE fiber-metal laminates interleaved by Nylon 6,6 nanofiber mats

2017 ◽  
Vol 167 ◽  
pp. 123-131 ◽  
Author(s):  
Hamed Zarei ◽  
Tommaso Brugo ◽  
Juri Belcari ◽  
Hosein Bisadi ◽  
Giangiacomo Minak ◽  
...  
Keyword(s):  
Damage Assessment ◽  
Impact Damage ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Fiber Metal Laminates ◽  
Velocity Impact ◽  
Nylon 6,6 ◽  
Fiber Metal ◽  
Nanofiber Mats
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