TY - GEN
T1 - Study of surface and sub-surface damage initiation and propagation in carbon/epoxy composites
AU - Yekani Fard, Masoud
AU - Raji, Brian
AU - Sadat, Seid Mohamadali
AU - Chattopadhyay, Aditi
N1 - Funding Information:
This research has received funding from Pipe Reconstruction Inc., Phoenix, Arizona under agreement no. 12-092212.
PY - 2013
Y1 - 2013
N2 - The objective of this study is to create a link between defects detected through nondestructive testing (NDT) and the mechanical performance of the composite structures using strain mapping technique. Flash Thermography, a conventional NDT technique, is used to predict detectable pre-existing surface and sub-surface irregularities and defects on stitch-bonded biaxial composite laminates. Attention is drawn to the homogenized mechanical behavior at the macro-scale and to damage initiation and propagation at the unit cell level. Damage onset and propagation are studied using time-dependent nonlinear regression of the strain field. Effects of the manufacturing and installation irregularities on damage initiation, propagation, and failure are monitored at the end of the loading process.
AB - The objective of this study is to create a link between defects detected through nondestructive testing (NDT) and the mechanical performance of the composite structures using strain mapping technique. Flash Thermography, a conventional NDT technique, is used to predict detectable pre-existing surface and sub-surface irregularities and defects on stitch-bonded biaxial composite laminates. Attention is drawn to the homogenized mechanical behavior at the macro-scale and to damage initiation and propagation at the unit cell level. Damage onset and propagation are studied using time-dependent nonlinear regression of the strain field. Effects of the manufacturing and installation irregularities on damage initiation, propagation, and failure are monitored at the end of the loading process.
UR - http://www.scopus.com/inward/record.url?scp=84880771048&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84880771048&partnerID=8YFLogxK
U2 - 10.2514/6.2013-1764
DO - 10.2514/6.2013-1764
M3 - Conference contribution
AN - SCOPUS:84880771048
SN - 9781624102233
T3 - 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
BT - 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
T2 - 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Y2 - 8 April 2013 through 11 April 2013
ER -