Development of an Ultrasonic Prototype Instrument to Replace an Environment-Polluting Measurement Practice in the Composite Materials IndustryEPA Contract Number: 68D30077
Title: Development of an Ultrasonic Prototype Instrument to Replace an Environment-Polluting Measurement Practice in the Composite Materials Industry
Investigators: Li, Yan
Small Business: Xxsys Technologies Inc.
EPA Contact: Manager, SBIR Program
Project Period: September 1, 1993 through January 1, 1995
Project Amount: $150,000
RFA: Small Business Innovation Research (SBIR) - Phase II (1993) Recipients Lists
Research Category: SBIR - Pollution Prevention , Pollution Prevention/Sustainable Development , Small Business Innovation Research (SBIR)
Description:The objective of this Phase II proposal is to develop an ultrasonic Lamb wave demonstration prototype to replace a widely-used, environmentally polluting industrial practice in composites manufacturing. The goal is to dramatically reduce industrial wastes and minimize health hazards to workers. The current practice generates about 1 million gallons of industrial wastes per year. Composites are increasingly replacing metals in many applications. This megatrend of metal replacement means increasing testing and escalating production of industrial wastes.
Phase I of this program developed an innovative waveguide design for selecting the Lamb wave mode and frequency to be transmitted and received. It demonstrated that propagation velocity of symmetrical mode Lamb waves, combined with accurate cutting and weighing, can be used to determine both resin content and fiber areal weight with high precision. Phase II will focus on the manufacture of a demonstration prototype to be used for validation of Lamb wave technology for measurement of resin content and fiber areal weight of uni-directional graphite prepregs, and for evaluation of its applicability to woven prepregs. Success in this program will alleviate the toxic waste problem anticipated as the megatrend of metal replacement accelerates in the next decade.