MICROSTRUCTURE AND DAMAGE EVALUATION FOR FIBRE-REINFORCED COMPOSITES
Abstract
It is proposed to exploit recent research at the University of Liverpool on the decomposition of displacement and strain fields in the analysis of data acquired during an AFRL study on microstructure-sensitive damage characterization/simulation in continuous fiber reinforced ceramic composites. This work will build on the successful outcomes of recent research in three areas: the development of techniques to quantify the relationships between the morphologies of microstructural features in ceramic matrix composites; the application of orthogonal decomposition to volumes (three-dimensional tensors) of measurements to characterize three-dimensional microstructures; and the exploration of the effect of loading rates on failure mechanisms using feature vectors to characterize and track damage development. Three tasks are identified that focus on different aspects of the available data including recently developed image decomposition techniques, extension to three dimensions using computed tomography data and volume decomposition, and damage tracking during fracture and fatigue tests. The outcomes will be the capability: to correlate local fiber angles with the location and morphology of voids and matrix-rich zones; to characterize, using shape descriptors, the microstructural features in a three-dimensional specimen from computed-tomography data; and to track the development of damage with time during fracture and fatigue tests using strain-based assessments. The proposed research will leverage expertise at the University of Liverpool on the decomposition of displacement and strain fields and will tackle issues of interest to AFRL on damage and defects in microstructure-sensitive fiber-reinforced ceramic composites.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 11, 2021
- Source ID
- FA86552017034
Entities
People
- Eann A. Patterson
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Liverpool