Fracture Micromechanisms of Fibre-Metal Laminates: In-Situ SEM Observations

The monotonic fracture micromechanisms of an aramid-aluminum laminate were studied using very small single edge bend specimens, SE(B) tested in a small-instrumented testing machine inside a scanning electron microscope. Thefracture process was followed by simultaneous observation of the sample and r...

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Bibliographic Details
Published in:Journal of composite materials 2002-02, Vol.36 (4), p.387-400
Main Authors: Castrodeza, E. M., Bastian, F. L., Yawny, A., Ipiña, J. E.Perez
Format: Article
Language:English
Subjects:
Aluminum
Applied sciences
Composite materials
Composites
Exact sciences and technology
Experiments
Fibers
Forms of application and semi-finished materials
Fracture mechanics (crack, fatigue, damage...)
Fracture mechanics, fatigue and cracks
Fundamental areas of phenomenology (including applications)
Hydraulics
Metals
Physics
Polymer industry, paints, wood
Simulation
Solid mechanics
Structural and continuum mechanics
Technology of polymers
Testing
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Summary:The monotonic fracture micromechanisms of an aramid-aluminum laminate were studied using very small single edge bend specimens, SE(B) tested in a small-instrumented testing machine inside a scanning electron microscope. Thefracture process was followed by simultaneous observation of the sample and recording the loading variables. The instability fracture toughness was strongly dependent on the fibre-reinforced epoxy layer and the crack-growth in the external aluminum layers, prior to fracture instability, was influenced by the notch acuity. The load versus loadline displacement behaviourand load instabilities were similar to the ones obtained by conventional testing procedures. The technique implemented proved to be a powerful tool to study the fracture micromechanisms of aramid-aluminum laminates or other fibre-metal laminates and to correlate them with the recorded macro events.
ISSN:0021-9983
1530-793X
DOI:10.1177/0021998302036004200