FOUR TASKS, TWO STRATEGIES WITH ONE GOAL: RELIABLE FIBERGLASS (FRP) EQUIPMENT

摘要

Strengths: 1.Quick, single side method --- non-destructive. 2.Used as a comparator on used or running equipment. Limitations on used equipment: 3.FRP velocity changes at least 20% with 100deg f temperature change. 4.FRP velocity and attenuation appear normal with liquid saturated damage but change more than 20% as damage desiccates. 5.Perhaps a dozen other variables in a running piant may effect results.