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EtherNDE’s John Hansen: Getting Back to the Basics of Eddy Current Testing

Ed Korkowski

In a field as technical and ever-evolving as eddy current testing, it’s essential to have a strong foundation. That’s where John Hansen’s Back to Basics comes in—a timeless resource that distills the core principles and practices of eddy current inspection. Originally published as a series in Insight magazine, this book serves as a refresher and reference for anyone looking to strengthen their grasp of the fundamentals.


Here’s why Back to Basics remains a valuable tool for eddy current professionals:


  1. Focus on the Fundamentals:

    • Part 1: History and electrical theory, tying today’s practices to foundational discoveries by Faraday and others.

    • Part 2: Impedance plane and probes, breaking down the essentials of probe selection and signal interpretation.

    • Part 3: Instrumentation, offering a guide to traditional and still-relevant testing tools.

    • Part 4: Applications, emphasizing practical setups and best practices.


  2. Timeless Knowledge: While technology has advanced, the foundational principles of eddy current testing remain unchanged. Hansen’s clear, straightforward explanations make it easier to revisit and reinforce these core concepts.


  3. Practical and Visual Learning: From impedance planes to probe configurations, Hansen’s use of diagrams and practical examples enhances understanding, making it a reliable guide for both new and experienced practitioners.


  4. Bridge Between Theory and Practice: Whether you’re sorting materials, inspecting tubes, or evaluating surface cracks, this book ensures you have the foundational knowledge to perform tests with confidence.


  5. Ideal for Refresher Training: Back to Basics is perfect for professionals returning to the basics, instructors seeking a teaching resource, or individuals preparing for certifications.


This book isn’t about cutting-edge technology—it’s about getting the fundamentals right. And in a field where precision is paramount, there’s no substitute for a solid grounding in the basics.


Get Back to the Basics Today!If you want to reinforce your foundational knowledge or refresh your understanding of eddy current testing, Back to Basics is the guide for you.


Explore More Great Eddy Current Resources!

Visit eddycurrent.com/books to discover a curated collection of classic and essential books on eddy current testing.


Refresh your skills, revisit the basics, and stay grounded in the core principles that define excellence in eddy current testing!

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