From torque to truth: Strengthening wind turbines with ultrasonic precision

In large wind turbine installations, a single incorrectly tensioned bolt can compromise safety, reliability, and long-term performance. As turbines grow in size and complexity, traditional torque-based methods are no longer sufficient to meet the industry’s demands for precision and traceability.

R&D Test Systems is a Danish technology company specializing in advanced test and measurement solutions for critical industrial applications. With a strong focus on the wind energy sector, the company develops tools that help ensure safety, quality, and reliability in large-scale mechanical structures.

As part of the green transition, wind turbine manufacturers face increasing demands for precision, documentation, and long-term reliability. Traditional torque-based bolt tightening methods provide only indirect estimates of bolt tension and can lead to uncertainty, rework, and costly failures.

R&D Test Systems approached Trifork to support the development of Bolt-Check—an ultrasonic bolt tension measurement system—requiring a robust digital foundation, intuitive user experience, and scalable software architecture to match the high precision of the hardware solution.

From the outset, the ambition was to move beyond prototypes and deliver a production-ready digital product. Trifork partnered closely with R&D Test Systems from an early stage to define the software vision, user journeys, and technical architecture that could support an industrial-grade solution.

R&D Test Systems needed a partner capable of taking responsibility across the entire digital product journey—from early concept and architecture to production-ready software operating in safety-critical environments.

Over a development period of more than 12 months, Trifork helped take Bolt-Check from concept to a mature, production-ready digital platform. The scope covered the full product lifecycle—from UX and UI design to implementation—resulting in two complementary applications forming a connected digital platform tailored to both field use and centralized administration and reporting. This ensured flexibility across installation, commissioning, and documentation workflows, while maintaining a consistent and intuitive user experience.

In a relatively short time, R&D Test Systems achieved a significant level of digital maturity.

Bolt-Check evolved from an initial idea into a fully operational, production-ready product. The solution now supports industrial-scale deployment across sites, teams, and long service lifecycles in real-world operation.

The result is not only a precise measurement tool, but a complete digital solution that enables faster installations, improved documentation, and long-term traceability of critical bolted joints. This rapid progression accelerated time-to-market and allowed R&D Test Systems to support industry leaders with a robust and scalable solution.

Bolt-Check is now a proven solution in the wind energy sector, delivering accurate bolt tension measurements without special bolt preparation. By reducing rework and increasing confidence in structural integrity, the solution supports higher quality standards and long-term turbine reliability—helping lower operational risk and lifecycle costs while strengthening R&D Test Systems’ market position.

While developed for the wind energy sector, the Bolt-Check platform demonstrates how companies can transform complex industrial hardware into scalable, production-ready digital products through the right technology partnership.