DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Dynamic crack propagation from a circular defect in a unidirectional carbon fiber reinforced plastic composite [Dynamic crack propagation from a circular defect in a unidirectional CFRP composite]

Journal Article · · Journal of Composite Materials

A single-ply unidirectional IM7/8552 carbon fiber reinforced plastic (CFRP) composite with artificially introduced circular defects is subjected to dynamic tensile loading using a modified Kolsky tension bar. A high-speed X-ray phase contrast imaging method is integrated with the Kolsky bar setup to record the crack initiation from the defects and subsequent propagation in the material in real time during the tensile loading. The tensile loading was applied either in longitudinal (0° to fibers) or transverse (90° to fibers) direction of the specimens. Shear failure of the matrix and axial splitting along the loading/fiber direction were observed in longitudinal specimens to initiate from the edge of the artificial circular defects. Debonding of fiber and matrix was observed in transverse specimens which initiated from the top and bottom edge of the hole. Furthermore, the dynamic tensile loading history during the crack propagation was recorded using a piezoelectric load cell and synchronized with the observed damage and failure processes.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
U.S. Army Research Laboratory; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1508385
Journal Information:
Journal of Composite Materials, Journal Name: Journal of Composite Materials Journal Issue: 25 Vol. 52; ISSN 0021-9983
Publisher:
SAGECopyright Statement
Country of Publication:
United States
Language:
English

References (21)

A tensile testing technique for fibre-reinforced composites at impact rates of strain journal June 1983
Fracture of thick laminated composites journal March 1986
Experimental Study on Tensile Behavior of Carbon Fiber and Carbon Fiber Reinforced Aluminum at Different Strain Rate journal January 2007
Damage mechanics of composite materials: I— Measurements of damage and strength journal January 1990
Strain concentrations in woven fabric composites with holes journal February 2003
Examination of ply cracking in composite laminates with open holes: A moiré interferometric and numerical study journal February 2006
Full-field assessment of the damage process of laminated composite open-hole tensile specimens. Part I: Methodology journal November 2007
Full-field assessment of the damage process of laminated composite open-hole tensile specimens. Part II: Experimental results journal November 2007
High strain rate characterisation of unidirectional carbon–epoxy IM7-8552 in longitudinal compression journal May 2011
Comparison of open hole tension characteristics of high strength glass and carbon fibre-reinforced composite materials journal October 2008
Dynamic compressive strengths of polymeric composites journal June 2004
High strain rate characterisation of unidirectional carbon-epoxy IM7-8552 in transverse compression and in-plane shear using digital image correlation journal November 2010
Effect of strain rate on the mechanical properties of carbon/epoxy composites under quasi-static and dynamic loadings journal July 2016
High speed synchrotron x-ray phase contrast imaging of dynamic material response to split Hopkinson bar loading journal February 2013
In situ damage assessment using synchrotron X-rays in materials loaded by a Hopkinson bar
  • Chen, Weinong W.; Hudspeth, Matthew C.; Claus, Ben
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 372, Issue 2015 https://doi.org/10.1098/rsta.2013.0191
journal May 2014
Observation of Crack Propagation in Glass Using X-ray Phase Contrast Imaging journal October 2014
Tensile strength of unidirectional CFRP laminate under high strain rate journal January 2007
Experimental Investigation of Progressive Damage and the Effect of Layup in Notched Tensile Tests journal June 2005
Strength of Tensile Loaded Graphite/Epoxy Laminates Containing Cracks, Open and Filled Holes journal May 1990
Tensile failure of fibrous composites journal November 1964
Tensile failure of fibrous composites conference August 1964