US-Bond
| Project title | US-BOND |
| Project subtitle | Optically and qualitatively high-quality bonding of glass constructions through ultrasonic support |
| Projectleader | Prof. Dr.-Ing. Michael Engelmann (TU Dresden) |
| Researcher | Dipl-Ing. Philipp Kießlich (TU Dresden) |
| Partners |
isi-sys GmbH |
| Funding | BMWK – Zentrales Innovationsprogramm Mittelstand (ZIM) |
| Time span | 2023-2025 |
Projectdescription
Adhesive technology offers huge potential to preserve resources through materialefficient lightweight construction methods and innovative material combinations. Despite many advantages, there are still reservations in the construction industry, mostly due to high demands on structural safety, as well as a lack of experience and doubts about the application quality. These reservations can be overcome when the adhesive process is designed to meet specific attributes of materials and practical requirements of constructions.
The glass and facade construction sector is suitable for adhesive technology due to its high degree of prefabrication and precision. Parallelly, architectural demands for expressing individuality trough shapes are steadily increasing. Also, large-scale glazing such as all-glass systems, shower enclosures, or walkable glass panels are being used more frequently in interior spaces for partitions and design. Adhesive bonding allows for a uniform and visually high-quality appearance. However, meeting the strict requirements for the adhesive process and surface cleanliness is challenging and may require significant effort from the manufacturing industry. Defects such as bubbles and wetting errors in the adhesive or on the joint surface can negatively affect the visual appearance and mechanical performance of the construction.
The project addresses these issues through the use of ultrasound technology. Time- and spatially-defined ultrasound excitation occurs during the adhesive bonding process. Contaminations can be removed from the surface and transferred into the adhesive, where they are not visible and do not affect the adhesion to the surface. Additionally, improvements in mixing quality, porosity, and mechanical properties are possible.
The first step of the project is to characterise typical defects of various adhesives during the production process. Based on this, process parameters are identified to enable the variable and reliable development of the excitation frequency. The process development is accompanied by the characterization of adhesives during treatment, with the goal of increasing method safety by reducing manufacturing-related inhomogeneities. This will also contribute to an efficient design of the adhesive joint. Adapters will be developed for application in the adhesive process, allowing the user-friendly integration of ultrasound in point and line bonding. All of the above problem solutions will culminate in a quality assurance concept.
Contact person TU Dresden
© Franziska Rehde
Research Associate
NameDipl.-Ing. Philipp Kießlich
Send encrypted email via the SecureMail portal (for TUD external users only).
Institute of Building Construction
Institute of Building Construction
Visiting address:
ABS 30, Haus 116, Room 06-015 August-Bebel-Straße 30
01219 Dresden
© Franziska Rehde
Professor of Sustainable Building Construction
NameProf. Dr.-Ing. Michael Engelmann
Head of the Institute of Building Construction
Send encrypted email via the SecureMail portal (for TUD external users only).
Institute of Building Construction
Institute of Building Construction
Visiting address:
ABS 30, Haus 116, 06-018 August-Bebel-Straße 30
01219 Dresden