Date of download: 1/3/2018 Copyright © ASME. All rights reserved. From: Self-Healing of Wind Turbine Blades Using Microscale Vascular Vessels J. Energy Resour. Technol. 2017;139(5):051208-051208-7. doi:10.1115/1.4036052 Figure Legend: Real-time photographs during three-point bending test of an undamaged, self-healing specimen from sample 5. Camera perspective is showing the tensile stress side of the specimen. The specimen is illuminated under UV light. (a) Initial photograph at the start of the test, (b) photograph within the first minute into the test showing depletion of healing agent from the tubes, and (c) photograph in the last minute of the test showing cracks that are filled by the healing agent.