High-Performance Composites

MAR 2013

High-Performance Composites is read by qualified composites industry professionals in the fields of continuous carbon fiber and other high-performance composites as well as the associated end-markets of aerospace, military, and automotive.

Issue link: https://hpc.epubxp.com/i/110847

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Page 22 of 67

cLarIFIcaTION Leading the world in Advanced Composite Training In the November 2012 issue of HPC, we reported on the use of carbon fiber in the manufacture of carbon fiber musical instruments, including violins, cellos and guitars. The article included a review of the history of carbon fiber in instruments. Unfortunately, we overlooked one major contributor. Leonard K. John, senior engineering advisor, materials technology, at Bombardier (Toronto, Ontario, Canada), reports that he developed the world's first carbon fiber violin in the 1970s, and in 1983 he was granted the first U.S. patent for a carbon fiber violin and related instruments, including the viola, cello and bass. John tells HPC that he has produced nine violins to date, with a 10th under consideration. John's original carbon fiber violin is on display at the Ontario Science Center in Toronto. His instrument also is on display at the National Music Museum at the University of South Dakota (Vermillion, N.D.). To read more about the violin, visit http://orgs.usd.edu/nmm/News/Newsletter/August2010/StyronRevolution.html#10667. HPC regrets that John's work was not noted and credited in the original report. ABARIS TRAINING Dedicated to Excellence in Advanced Composite Training engineering tooling repair manufacturing NDI adhesive bonding Reno, NV • Griffin, GA • Bicester, UK • Brasilia, BR 1-775-827-6568 • w w w.abaris.com Focus on Oxidation Oven Technology • Oxidation Ovens with Patented G5 End-Seals • Designs for Wide Tow Widths • Roll Stands and Sizing Systems • Computreater CF Pilot Machine - 1 Tow C. A. Litzler Co., Inc. • 4800 W. 160th Street • Cleveland, OH 44135 USA 216-267-8020 • Fax: 216-267-9856 • sales@calitzler.com • www.calitzler.com • Litzler Shanghai 021-54249130 For more information, please visit calitzler.com, oxidationovens.com, and litzlerautomation.com. march 2013 | 21

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