World War II and Technological Advancements

During World War II, the demand for reliable and safe aircraft led to significant advancements in NDE technology. Radiographic testing, using X-rays and gamma rays, became popular to detect internal defects in metal structures. This period marked a turning point for NDE, as it became more systematic and critical for various industries.

1. Ultrasonic Testing Revolution

In the 1950s, the introduction of ultrasonic testing (UT) revolutionised the NDE industry. UT utilised high-frequency sound waves to detect internal flaws and assess material thickness. This technique provided valuable insights into the integrity of critical components and helped prevent catastrophic failures.

2. Eddy Current Testing and Electromagnetic Techniques

As electronic technology advanced, NDE engineers developed eddy current testing (ECT) and electromagnetic techniques. ECT was particularly useful for insAs electronic technology advanced, NDE engineers developed eddy current testing (ECT) and electromagnetic techniques.
ECT was particularly useful for inspecting conductive materials and detecting surface cracks and flaws. These methods further expanded the capabilities of NDE, making it applicable in a wide range of industries.

3. Advent of Digital Radiography and Computed Tomography

In the late 20th century, digital radiography and computed tomography (CT) emerged as game-changers in NDE.
Digital radiography replaced traditional film-based methods, offering faster results and better image quality.
CT scanning provided cross-sectional images, allowing for three-dimensional visualisation of internal structures, making it ideal for complex components and assemblies.