In the “LaufFGL” research project, Ingpuls GmbH is collaborating with leading partners to develop a cutting-edge solution designed to enhance the reliability of bolted joints in highly critical applications. The goal is to integrate an active functional element directly into the bolted joint in order to specifically compensate for temperature-induced settlement.
Project Goal: Maximum safety under extreme conditions
Screw connections are essential for numerous technical systems. In demanding applications, however, thermal effects can lead to loosening, which compromises stability.
The LaufFGL project therefore aims to:
- Development of an active threadlocker
- Compensation for temperature-related voltage losses
- Improved long-term stability and operational reliability
Technology: Laser cladding with shape memory alloys
At the heart of the project is the combination of laser cladding and innovative shape memory alloys (SMA).
How it works
Laser cladding is used to integrate a localized functional layer of shape memory alloy directly into the bolted joint. This layer acts as an actuator that responds to temperature changes and actively generates forces to maintain a constant preload in the joint.
Advantages of the technology:
- Active compensation for settlement losses
- High-precision integration using laser technology
- Material efficiency through targeted application
- No use of chemical fasteners
- A sustainable and eco-friendly solution/li>
Resource-efficient and effective
A particular focus is placed on the sustainability of the solution. The targeted use of material in laser cladding minimizes resource consumption. At the same time, the technology replaces traditional, often environmentally harmful chemical threadlockers.
Project partners and interdisciplinary collaboration
The “LaufFGL” project brings together industrial and scientific expertise:
- Ingpuls GmbH, Bochum
- Schotte Automotive GmbH & Co. KG, Hattingen
- Ruhr-Universität Bochum – Lehrstuhl für Laseranwendungstechnik
- Universität Duisburg‑Essen – Lehrstuhl für Werkstofftechnik
Close collaboration between industry and academia lays the groundwork for practical and economically relevant implementation.
Applications
The technologies developed in the project are particularly relevant for:
- Aerospace
- Automotive
- Mechanical Engineering
- Energy and Plant Engineering
Anywhere where the highest standards of reliability and safety are required.
Conclusion: The Future of Screw Connection Technology
With “LaufFGL”, Ingpuls is setting new standards in the development of smart, active fasteners. The combination of shape memory alloys and laser cladding opens up entirely new possibilities for safe, efficient, and sustainable bolted joints.
