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Dynamic initiation and propagation behaviour of sub‐interfacial cracks in PMMA/aluminium bi‐material system
Author(s) -
YAO X. F.,
YEH H. Y.,
XU W.
Publication year - 2005
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2005.00960.x
Subject(s) - caustic (mathematics) , materials science , aluminium , fracture mechanics , fracture (geology) , composite material , high speed photography , characterization (materials science) , stress intensity factor , dynamic stress , phase (matter) , dynamic loading , mechanics , geometry , chemistry , mathematics , physics , organic chemistry , nanotechnology
The paper describes studies on the dynamic initiation and growth of sub‐interfacial cracks in a PMMA/aluminium bi‐material system using high‐speed photography combined with the method of caustics. Dynamic fracture phenomena such as crack propagation trajectories, crack velocity, phase angle and stress intensity factor were determined from recordings of a series of dynamic caustic patterns surrounding the propagating sub‐interfacial crack tip.. There is a considerable influence of the distance between the interface and the crack on fracture characterization.