TY - JOUR
T1 - Compressive intralaminar fracture toughness and residual strength of 2D woven carbon fibre reinforced composites : new developments on using the size effect method
AU - Dalli, D.
AU - Catalanotti, G.
AU - Varandas, L.F.
AU - Falzon, B. G.
AU - Foster, S.
PY - 2020
Y1 - 2020
N2 - This paper presents new developments in the use of the size effect method for obtaining the compressive fracture toughness of 2D woven carbon fibre composites. A modification of the Double Edge Notch Compression (DENC) specimen geometry is proposed, to fit the Combined Loading Compression (CLC) standard fixture, and shown to reduce peak load dispersion. The notch tip diameter sensitivity on the peak load is also investigated, experimentally and numerically, and shown not to have a significant influence on fracture toughness. The use of the CLC fixture also allows for the residual compressive strength of the material to be calculated from post-peak crushing.
AB - This paper presents new developments in the use of the size effect method for obtaining the compressive fracture toughness of 2D woven carbon fibre composites. A modification of the Double Edge Notch Compression (DENC) specimen geometry is proposed, to fit the Combined Loading Compression (CLC) standard fixture, and shown to reduce peak load dispersion. The notch tip diameter sensitivity on the peak load is also investigated, experimentally and numerically, and shown not to have a significant influence on fracture toughness. The use of the CLC fixture also allows for the residual compressive strength of the material to be calculated from post-peak crushing.
UR - https://hdl.handle.net/1959.7/uws:76632
U2 - 10.1016/j.tafmec.2020.102487
DO - 10.1016/j.tafmec.2020.102487
M3 - Article
SN - 0167-8442
VL - 106
JO - Theoretical and Applied Fracture Mechanics
JF - Theoretical and Applied Fracture Mechanics
M1 - 102487
ER -