We are proud to announce that we are finalists in the post-processing award category at the 2023 TCT Awards.

Theta Technologies


Non-Destructive Testing

Rapid, cost-effective NDT flaw detection for metal AM, conventional metals, and composite components.


welcome to Theta Technologies

We are a UK-based engineering company specialising in the non-destructive testing of parts produced for safety-critical applications in industries such as aerospace, defence, automotive and power generation. Our unique nonlinear resonance non-destructive testing technology is designed to offer safer, more cost-effective, and faster flaw detection for manufacturers of a variety of materials including:

NDT for Metals

The go-to material for manufacturers for decades. Metals have been the building block of most industries thanks to its unrivalled strength and versatility. 

NDT for Additive Manufacture

3D printing offers manufacturers greater design freedom, but the increasing geometries and complexities on offer means that existing NDT methods are no longer suitable.

NDT for Composites

Since the mid 1990s, composites have been widely used in manufacturing processes thanks to its relatively low cost, light weight, and incredible strength.


Theta Technologies' The Case Study issue 3

Non-destructive Testing | The Case Study | Issue #4

Nonlinear Resonance NDT: Using complementary NDT techniques to detect a wider range of flaws in metal AM parts.

In this issue, we’re taking a slightly different approach. Instead of continuing to sing the praises of nonlinear resonance as a sole NDT solution, we’re looking at how this game-changing technology can form meaningful partnerships with already established non-destructive testing infrastructures to enhance manufacturing and quality assurance workflows. 


get to know us better

Delve deep into the world of nonlinear resonance non-destructive testing and the company behind this revolutionary technology.

Introducing RD1-TT

The world’s only nonlinear resonance NDT solution specifically designed with metal additive manufacturing in mind. RD1-TT is not only capable of rapid flaw detection in even the most complex 3D-printed metal parts but can also detect flaws that other NDT solutions cannot see.

Our advantage

Our unique technology offers a number of key advantages over other non-destructive testing methods on the market.


The first NDT solution capable of performing a complete non-destructive test in under one minute.


Unlock the full potential of additive manufacturing with the ability to test metal and composite parts with complex geometry.


Our technology can detect even the smallest of flaws deep within manufactured parts that other NDT methods can’t.


Issue #2

The Case Study

Nonlinear resonance NDT: The rapid assessment of creep in nickel superalloy turbine blades

Non-destructive testing case study by Theta Technologies

Issue #3

The Case Study

Nonlinear resonance testing of metal AM star artefact samples

Non-destructive testing for metal additive manufacturing

Issue #4

The Case Study

Nonlinear resonance NDT: Using complementary NDT techniques to detect a wider range of flaws.

learn more

Find out more about this revolutionary NDT technology from the team that built it.

Theta Technologies Limited


Theta Technologies Limited

3 Babbage Way

Exeter Science Park

Clyst Honiton



United Kingdom


Enquiries: +44(0)1392 247912



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