NDT | AI in NDT
www.qualitymag.com/articles/98607-ai-a-game-changer-for-automated-defect-detection-in-ndt
This comparison shows a casting with cavities, which the AI-supported module reliably detects – on the left in the image.

Image Source: VisiConsult X-ray Systems & Solutions GmbH

AI: A Game-Changer for Automated Defect Detection in NDT

The role of AI in NDT is now at an inflection point, with the use of machine learning and deep learning technologies opening up new horizons.

March 3, 2025
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Artificial intelligence (AI) is revolutionizing nondestructive testing (NDT) with algorithms, machine learning and deep learning. These technologies make it possible to analyze complex data sets quickly and accurately, which is particularly important in safety-critical industries such as aerospace and energy. The integration of AI into NDT methods such as ultrasonic testing, radiography and thermography increases the effectiveness and accuracy of inspections and provides deep insights into the condition of components. In addition, predictive AI analytics enable the early detection of failures, preventing expensive operational disruptions. The advancement of AI technology heralds a future where safety and efficiency in NDT will be greatly enhanced by advanced diagnostic capabilities and automated solutions.

AI in NDT: From the Lab to a Key Role in Inspection and Maintenance

Advances in artificial intelligence (AI) have undergone remarkable development in nondestructive testing (NDT). From simple data analysis and pattern recognition tasks, AI has become a central element in NDT. Like other revolutionary technologies, the integration of AI into NDT is initially slow, then rapidly increasing after a turning point is reached.

In the area of defect detection and analysis, AI-based NDT systems are already performing outstandingly. Leading companies have begun developing their own AI algorithms and training them with extensive data, enabling these systems to identify even the smallest imperfections and defects that traditional inspection processes might not have detected. This significantly increases the precision, and particularly the efficiency of defect detection.

The illustration shows state of the art X-ray image processing software, which is equipped with the COMPASS AI module.
The illustration shows state of the art X-ray image processing software, which is equipped with the COMPASS AI module. This module enables the detection of indications such as pores or lack of fusion. It is possible to easily display the indications as a color overlay and to automatically measure the detected indications. This enables faster and more reliable evaluation in X-ray inspection. In this example, a circular weld seam can be viewed in comparison with and without the AI result. Image Source: VisiConsult X-ray Systems & Solutions GmbH

Furthermore, the added value of AI extends beyond individual applications and enables integration with various NDT methods such as ultrasonic testing, radiography and thermography in combined systems. This integration leverages the advantages of both AI and conventional NDT methods to increase the effectiveness of inspections.

AI applications are also becoming increasingly important in predictive maintenance and data analysis. By evaluating historical data, AI helps predict system failures, optimize maintenance cycles and minimize downtime. In addition, AI plays a key role in processing and interpreting the extensive amounts of data generated by nondestructive testing and helps to identify the causes of production defects.

Regarding training and standardization, various standardization initiatives are currently underway to ensure consistent and reliable use of AI in NDT. The first ASTM guidelines (e.g. E3327 Standard Guide) have been written and standardization bodies have been established to deal with the certification of AI technologies for sensitive applications.

In summary, the integration of AI into NDT has made the transition from experimental laboratory applications to a central component in the inspection and maintenance sector. This change is being driven by significant technological advances and increased efforts to standardize the industry.

Circular weld seam in a double wall inspection. Indications could even be detected on the opposite weld seam.
Circular weld seam in a double wall inspection. Indications could even be detected on the opposite weld seam. Image Source: VisiConsult X-ray Systems & Solutions GmbH

Predictive maintenance trend set to be the main disruptor

The role of AI in NDT is now at an inflection point, with the use of machine learning and deep learning technologies opening up new horizons. These technologies make it possible to analyze complex data at a speed and accuracy far beyond human capabilities, which is particularly crucial in critical industries such as aerospace and energy. Considering these developments, a few trends are emerging:

Predictive maintenance: AI-powered analytics enable the early detection of potential failures, enabling preventive maintenance measures that avoid costly downtime and repairs. This use of AI makes it possible to recognize patterns in data and predict when and where faults or failures could occur before they happen. This has the potential not only to reduce downtime and increase safety, but also to significantly reduce maintenance costs and extend the service life of machinery and equipment. This trend is therefore a major disruptor in the industry. This approach uses complex algorithms and machine learning to make precise predictions about the condition of equipment and materials, thereby revolutionizing the way maintenance is planned and carried out.

Advanced analysis and detection capabilities: The use of advanced AI methods significantly improves the precision of defect detection in NDT. This enables unprecedented diagnostic accuracy, especially when evaluating complex materials and structures.

Multi-modality applications: The integration of AI into combined testing of several NDT methods, such as ultrasonic testing, radiography and thermography, not only improves the effectiveness and accuracy of the tests but also provides more detailed insights into the condition of components.

This comparison shows a casting with cavities, which the AI-supported module reliably detects – on the left in the image.
This comparison shows a casting with cavities, which the AI-supported module reliably detects – on the left in the image. These are otherwise only visible with the help of special image filters – as can be seen on the right – and are difficult to detect. Image Source: VisiConsult X-ray Systems & Solutions GmbH

Looking further into the future, automation and efficiency will become increasingly important. This is because the integration of AI into NDT processes will lead to extensive automation of inspections. This will not only significantly accelerate the inspection process but also ensure greater efficiency and reliability of results.

The continuous advancement of AI technologies promises transformative potential for the NDT industry, characterized by sophisticated, automated solutions that bring significant increases in safety and operational efficiency. The development and implementation of AI in NDT is aimed at complementing and augmenting human expertise, not replacing it. This promotes a synergetic collaboration in which AI performs quick, preliminary analyses while human experts focus on more complex assessments. And the ability to effectively use AI is increasingly becoming a deciding factor for success in NDT, setting new standards for safety, precision and efficiency.