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64 22 HISTORIC MONEL—PART I James E. Churchill Monel’s importance in the first half of the 20th century as a decorative metal has been nearly forgotten. MICROWAVE NDT INSPECTION TECHNIQUES FOR POWER GENERATION AND SPECIALTY APPLICATIONS Christopher Nelson and Robert Stakenborghs With increasing use of nonmetallic materials in a variety of power generatio n applications, new opportunities are driving research and development of microwave inspection technologies. 16 A D V A N C E D M A T E R I A L S & P R O C E S S E S | S E P T E M B E R 2 0 2 0 2 Multicolored weathering of 100-year-old historic Monel on the south stairs at Bryn Athyn Cathedral, Pa. Courtesy of James E. Churchill. On the Cover: 51 ASM NEWS The latest news about ASM members, chapters, events, awards, conferences, affiliates, and other Society activities. 3D PRINTSHOP Discover how researchers are correcting defects in real time and finding ways to build precise parts with small tolerances.