Specifically, threshold behavior is examined for large through-thickness cracks >4 mm in length), short through-thickness cracks (~200 μm in length), and microstructurally-small surface cracks (10 50 μm in diameter) under combined mode I and mode II loading at load ratios (ratio of minimum to maximum load) ranging from 0.1 to 0.8.
Fracture tests on the asphalt concrete were then performed under mode I, mode III and combined mode I and mode III loading conditions at several sub-zero temperatures (−5 °C, −20 °C, −30 °C).
The first nine modes were identified including five translational modes, two torsional modes, one combined mode and one vertical mode.
During a service loading fatigue cracks can be subjected to a mixed mode loading if, due to the alteration of the loading direction, the basic crack modes (Modes I, II and III) are combined.
The soft factor of fatigue loading is introduced to estimate the failure mode under the combined axial torsion loading.
Under the tensile and four combined loading conditions, the failure mode was the combination of fiber breaking (or FRP delamination) and interfacial adhesion failure between FRP sandwich deck and adhesive layer.
Pictures by scanning electron microscope were used to closely examine the failure mode of the tested specimens under combined torsion/bending loading.
Under combined blast loading, the panels exhibited a perforation and tearing failure mode accompanied by structural fragments from failed front face.
A new mode of large electrostrictive actuation, based on 90° domain switching in ferroelectric crystals subjected to combined electromechanical loading, has recently been experimentally demonstrated.
For this purpose, tubular specimens have been subjected to mixed-mode loading (reversal torsion combined with axial tension/compression).
