Multiple Approaches for Testing Novel Marine Coatings in the Laboratory and in Pearl Harbor
Abstract
Abstract The Principal Investigator and his associates will provide to ONR-collaborating chemists who are formulating experimental marine coatings the following tests: (1) static field-immersion testing of accumulation of macrofouling organisms in Pearl Harbor, Hawaii, coupled with periodic digital photography, estimates of percent cover, and water-jet or mechanical forcegauge measurements of adhesion strength of hard-fouling organisms; and (2) evaluation of the invertebrate and microbial communities growing on test surfaces in Pearl Harbor. (3) In the laboratory, we will evaluate: (a) the settlement and attachment of tropical fouling animals, especially the tube worm Hydroides elegans, the abundant harbor oyster Dendostrea sandvichensis, and the ascidian Phallusia philippinensis; (b) fluid shear forces necessary to remove fouling organisms from coated coupons in a calibrated turbulent flow cell; and (c) mechanical force necessary to remove submerged fouling organisms with a precision motorized force gauge. Overall, we will provide significant and rapid evaluation of experimental coatings in a tropical setting where marine biofouling is rapid and severe throughout the year. We will also continue on a time-available basis exploration of the diversity of biofilm bacterial species now known to induce the recruitment of major biofouling organisms, especially H. elegans.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2016
- Source ID
- N000141512658
Entities
People
- Michael Hadfield
Organizations
- Office of Naval Research
- United States Navy
- University of Hawaiʻi System