JULY 2021 VOLUME 79 • NUMBER 7 J U L Y 2 0 2 1 • M A T E R I A L S E V A L U A T I O N 653 Digital Extras This icon indicates that enhanced content is available on the digital edition of Materials Evaluation. FEATURES 678 Automated Robotic Systems for Nondestructive Testing of Aerospace Composite Structures Barry A. Fetzer 687 Aerial Robots for Contact-Based Ultrasonic Thickness Measurements for Field Inspections Robert (Bob) Dahlstrom 728 TECHNICAL PAPERS 715 Integrating Electromagnetic Acoustic Transducers in a Modular Robotic Gripper for Inspecting Tubular Components Hamidreza Nemati, Fernando Alvidrez, Ankit Das, Nihar Masurkar, Manoj Rudraboina, Hamid Marvi, and Ehsan Dehghan-Niri 728 Development of an Innovative Inspection Tool for Superheater Tubes in Fossil Fuel Power Plants Caique Lara, Julie Villamil, Anthony Abrahao, Aparna Aravelli, Guilherme Daldegan, Sharif Sarker, Daniel Martinez, and Dwayne McDaniel 739 AI-Enabled Robotic NDE for Structural Damage Assessment and Repair Xiaodong Shi, Anthony Olvera, Ciaron Hamilton, Erzhuo Gao, Jiaoyang Li, Lucas Utke, Andrew Petruska, Zhenzhen Yu, Lalita Udpa, Yiming Deng, and Hao Zhang 678 TECH FOCUS ISSUE: ROBOTIC INSPECTION 663 Focus Letter “We can be inspired by nature to develop advanced robotic inspection platforms.” Crack 715

654 M A T E R I A L S E V A L U A T I O N • J U L Y 2 0 2 1 PERSPECTIVE 659 President’s Letter “I am a firm believer in quality over quantity and attraction versus promotion.” 661 Guest Letter “The formation of the LLC will position ASNT for future success.” WHAT’S NEW 698 Product Gallery 699 Spotlight: Robotic Inspection 701 New Media Laser Powder Bed Fusion Book DR and CT Video Series Modernizing Operations Guide 702 Industry News Waygate Technologies Robotics Supports EU PILOTING Project Aerospace Maintenance & Repair Operation Locates HQ in Texas’s Hill Country Buehler Celebrates 85 Years MIL Announces Mark Sullivan as President 705 Standards Update departments RESOURCES 675 Contact ASNT 711 Calendar 753 Classifieds 753 Service Directory 762 Call for Papers 762 Ad Index IN THIS ISSUE Robotic Inspection Subscription Questions? ASNT membership includes a one-year subscription to Materials Evaluation. Institutions, or others who wish to have a subscription without becoming an ASNT member, may simply subscribe to the journal through ASNT. To become a member or subscribe to the journal, contact ASNT at 1-800-222-2768 or see asnt.org/membershipoptions. Back Issues & Article Copies Back issues of Materials Evaluation are available for purchase. See asnt.org/ME for details, or call 1-800-222-2768. Copies of individual articles may also be obtained through ASNT: contact the librarian at 1-800-222-2768 for more information. Comments & Suggestions Letters to the editor are welcome at any time. Letters that are timely and signifi- cant may be published in an issue of Materials Evaluation. Not all letters are suitable for publication, and ASNT makes no claim regarding publication of a given letter. Letters should be sent to Editor Jill Ross at jross@asnt.org. Digital Materials Evaluation content is also available online at asnt.org/materialsevaluation/access. 699 ASNT SCOPE 664 Section News 667 Society Notes 670 Society News 672 Awards and Honors 674 ASNT Award Winners 676 New ASNT Certificate Holders 664