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  Did you know we are currently in the fourth industrial revolution since the start of the 21st century? This time, the industrial transition features processes and technologies that promote the use of automation, enhanced connectivity, process optimisation measures, and better data management to increase productivity, save time, and minimise costs.  Non-destructive testing  technology is one of the developments that continue to thrive with the growing need to reduce human involvement in maintaining, troubleshooting, and monitoring materials.   Compared to traditional testing methods, non-destructive testing is non-invasive, faster, and more reliable in identifying a material’s structure, quality, component, or integrity. Plus, it does not require taking samples for testing in a lab, so it does not interfere with the product’s or material’s final use. As such, it delivers benefits like cost-effectiveness and quality control. Below are some of the most current trends and advancement

  One of the most trusted methods in non-destructive testing is the  eddy current , which is based on the principle of electromagnetism to find flaws in conductive materials. This makes it useful for many purposes, like measuring coating and material thickness, flaw detection, establishing conditions for heat treatments of specific materials, and material identification. Probes, devices, and other relevant instruments are available to make it easier to use in any application, especially in characterising and detecting sub-surface and surface flaws.     How does it work in NDT?   A specially designed coil is involved in eddy current testing, and it is placed near the test surface to be energised by an alternating current. It creates a magnetic field that links to the test part and generates eddy currents in its vicinity. Changes in various phases and the magnitude of the currents are then monitored using a receiver coil. Alternatively, you can measure variations in the altern