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Latest articles by Bill Bertelsen
by Bill Bertelsen, GBI Test Engineer Above: A properly engineered scootboard chassis. Even without the resources of a well-equipped test lab, Bill Bertelsen, GBI’s test engineer, was able to gather useful composites data using the equipment at handâin this case, a spring clamp, a ruler, a digital camera, and an 8-year-old girl. , “Daddy, can […]
Statue Repairs with Epoxy by Bill Bertelsen, GBI Test Engineer Above: Statue repairs are underway on “Shep,” a molded fiberglass figure that was knocked off its base and belongs in the outdoor nativity set of St. Luke’s United Methodist Church in Essexville, Michigan. Creating lasting outdoor art has challenged humans since the dawn of time. […]
By Bill Bertelsen We like to think that all our customers are considerably above average, but every once in a while we encounter someone really exceptional. On January 25, 1999, our tech service department took a phone call from Elizabeth Tedford, a 7th-grader from Lansing, North Carolina. She was working on a science fair project […]
by Bill Bertelsen, GBI Test Engineer Previous Epoxyworks have reported test results from the âHydromat,â a unique structural test developed at Gougeon Brothers, Inc. The American Society for Testing and Materials (ASTM), after a rigorous review by its D30 Committee on Composites, approved the Hydromat test method as an official ASTM standard.
by Bill BertelsenâGBI Test Engineer Our Technical Advisor Jim Derck (now retired), noticed that some fabrics seemed to have a remarkable thirst for epoxy. To determine exactly how much epoxy it takes to wet out and bond different kinds of fabric, Jim conducted a carefully controlled experiment.
