TY - JOUR
T1 - Investigating the Potential of Using Off-Axis 3D Woven Composites in Composite Joints’ Applications
AU - Saleh, Mohamed Nasr
AU - Wang, Ying
AU - Yudhanto, Arief
AU - Joesbury, Adam
AU - Potluri, Prasad
AU - Lubineau, Gilles
AU - Soutis, Constantinos
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Authors would like to acknowledge the financial support from University of Manchester (UoM) and from Baseline Research Funds from King Abdullah University of Science and Technology (KAUST). We also acknowledge the technical support from the National Composites Certification and Evaluation Facility (NCCEF).
PY - 2016/9/26
Y1 - 2016/9/26
N2 - The effect of circular notch has been evaluated for three different architectures of three-dimensional (3D) carbon fibre woven composites (orthogonal, ORT; layer-to-layer, LTL; angle interlock, AI) through open-hole quasi-static tension and double-lap bearing strength tests in the off-axis (45°) direction. Damage characterisation is monitored using Digital Image correlation (DIC) for open-hole testing and X-ray Computed Tomography (CT) for double-lap bearing strength test. The off-axis notched 3D woven composites exhibits minor reduction (less than 10 %) of the notched strength compared to the un-notched strength. DIC strain contour clearly show stress/strain localisation regions around the hole periphery and stress/strain redistribution away from the whole due to the z-binder existence, especially for ORT architecture. Up to 50 % bearing strain, no significant difference in the bearing stress/bearing strain response is observed. However when ORT architecture was loaded up to failure, it demonstrates higher strain to failure (~140 %) followed by AI (~105 %) and lastly LTL (~85 %). X-ray CT scans reveal the effect of the z-binder architecture on damage evolution and delamination resistance. The study suggests that off-axis loaded 3D woven composites, especially ORT architecture, has a great potential of overcoming the current challenges facing composite laminates when used in composite joints’ applications. © 2016 The Author(s)
AB - The effect of circular notch has been evaluated for three different architectures of three-dimensional (3D) carbon fibre woven composites (orthogonal, ORT; layer-to-layer, LTL; angle interlock, AI) through open-hole quasi-static tension and double-lap bearing strength tests in the off-axis (45°) direction. Damage characterisation is monitored using Digital Image correlation (DIC) for open-hole testing and X-ray Computed Tomography (CT) for double-lap bearing strength test. The off-axis notched 3D woven composites exhibits minor reduction (less than 10 %) of the notched strength compared to the un-notched strength. DIC strain contour clearly show stress/strain localisation regions around the hole periphery and stress/strain redistribution away from the whole due to the z-binder existence, especially for ORT architecture. Up to 50 % bearing strain, no significant difference in the bearing stress/bearing strain response is observed. However when ORT architecture was loaded up to failure, it demonstrates higher strain to failure (~140 %) followed by AI (~105 %) and lastly LTL (~85 %). X-ray CT scans reveal the effect of the z-binder architecture on damage evolution and delamination resistance. The study suggests that off-axis loaded 3D woven composites, especially ORT architecture, has a great potential of overcoming the current challenges facing composite laminates when used in composite joints’ applications. © 2016 The Author(s)
UR - http://hdl.handle.net/10754/621974
UR - http://link.springer.com/article/10.1007%2Fs10443-016-9529-9
UR - http://www.scopus.com/inward/record.url?scp=84991373109&partnerID=8YFLogxK
U2 - 10.1007/s10443-016-9529-9
DO - 10.1007/s10443-016-9529-9
M3 - Article
SN - 0929-189X
VL - 24
SP - 377
EP - 396
JO - Applied Composite Materials
JF - Applied Composite Materials
IS - 2
ER -