Relationship Between Phase Difference and Coefficient of Restitution During Low Velocity Foreign Object Transverse Damage of Composite Plates

1984 ◽  
Vol 6 (3) ◽  
pp. 109 ◽  
Author(s):  
WW Feng ◽  
KL Reifsnider ◽  
GP Sendeckyj ◽  
TT Chiao ◽  
GL Rodericks ◽  
...  
Keyword(s):  
Phase Difference ◽  
Composite Plates ◽  
Coefficient Of Restitution ◽  
Foreign Object ◽  
Low Velocity ◽  
Transverse Damage

Strength Loss in Composite Cylinders Under Impact

1988 ◽  
Vol 110 (2) ◽  
pp. 180-184 ◽  
Author(s):  
A. P. Christoforou ◽  
S. R. Swanson
Keyword(s):  
Composite Structures ◽  
Composite Plates ◽  
Strength Loss ◽  
Pressure Vessels ◽  
Fourier Series Expansion ◽  
Lateral Impact ◽  
Low Velocity ◽  
Expansion Procedure ◽  
The Impact ◽  
Composite Cylinders

The problem of strength loss in composite structures due to impact appears to be important due to the sensitivity of advanced composites to these loadings. Although a number of studies have been carried out on impact of flat composite plates, relatively little work has been done on tubular geometries such as pressure vessels despite the usage in applications. We have addressed the problem of calculating strength loss due to low velocity, lateral impact of composite cylinders. In our model we use an existing Fourier Series expansion procedure to calculate ply stresses and strains, compare these values with allowables to predict fiber breakage during the impact, and finally use fracture mechanics to predict the strength loss due to the impact. Although the model is quite simplified, the general trends of experiments appear to be represented.

Determination of Damage Levels of Composite Plates after Low Velocity Impacts Using Acoustic Emission

2006 ◽  
pp. 253-258
Author(s):  
Timothy P. Bradshaw ◽  
M.J. Eaton ◽  
Rhys Pullin ◽  
Sam L. Evans ◽  
C.A. Featherston
Keyword(s):  
Acoustic Emission ◽  
Composite Plates ◽  
Low Velocity
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