Automated deformation mapping in metal matrix composites

A new technique, automated deformation mapping (ADM), has been developed and used to map the mechanical response of the fiber and matrix in a single-fiber SiC SCS-6/Ti-6Al-4V composite. The technique employs a novel combination of fiducial gridding and computer-aided image analysis using cross-correlation for feature location. Two problems in transverse tensile loading were addressed: interface separation and matrix flow near the fiber. Fiber/matrix separation was detected at a composite stress of 200 MPa. Matrix flow was found to be consistent with finite element analysis of the component.