Damage characterization and fatigue modeling of CFRP subjected to cyclic loading
Source abstract
Abstract
Abstract Fatigue damage evolution in CFRP is characterized by variation of local transverse strain from digital image correlation (un-notched) and temperature variation from infrared thermography (notched). The damage evolves over 2–3 stages. Matrix cracks and fiber matrix debonding are observed in ±45°, 90° and 0° plies in stage I. Fiber fracture is observed in 0° plies only in stage II of the un-notched specimen. It is present even in stage I for notched specimens . In notched specimens, extensive fiber fracture is observed in −45°, 90° and 0° plies in stage II due to higher local stresses. Fiber fracture causes a larger rate of increase in local temperature. A three parameter cumulative damage model is used for predicting the damage evolution and fatigue life . Predictions were good for tension–compression tests in unnotched specimens, but inadequate for compression-compression tests. While using temperature for damage characterization in notched specimens, additional parametrization is required.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Structural Behavior of Reinforced Concrete · Fatigue and fracture mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (21)
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