Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New options for high-strength fibre ropes

17.06.2016

The new rope end connection made of plastic is the result from six years of research conducted by the University of Stuttgart. The cover for high-strength fibre ropes is now ready to be put on the market, a prototype is already in use. Its inventors are now looking for appropriate partners in industry.

Lightweight, inexpensive and extremely durable: The novel rope end connection for 4 to 96 mm strong fibre ropes can be subjected to extremely high tensile stress without breaking. Rope end connections are the link between the rope anchorage and the rope itself. The secret lies in the bonding resin and the special type of casting: It is poured onto the exactly clamped and pre-stressed fibres of the rope.


Engineer Sven Winter has developed a novel rope end connection for 4 to 96 mm strong fibre ropes that can be subjected to extremely high tensile stress without breaking.

Birgit Fernbacher, TLB GmbH


The rope end connection made of fibre cable and resin is extremely stable and durable and weighs only an eighth of a wire rope.

Birgit Fernbacher, TLB GmbH

Thus, a complete unit of rope and end connections is created which is able to withstand extremely high mechanical forces. "In our numerous tests, we could always reach and even often exceed the minimum breaking force indicated by the rope manufacturer," says Dipl.-ing. Sven Winter who developed the novel rope end connection together with Dipl.-Ing. Anita Finckh-Jung at the Institute of Mechanical Handling and Logistics (IFT) of the University of Stuttgart. This invention will open up completely new application areas for high-strength fibre ropes. “Because even the greatest rope is worthless without the appropriate end connection,” as Sven Winter puts it.

This innovative rope end connection – with patent applications filed in Europe, the US and China – can be used wherever steel cables are to be replaced by high-strength fibre ropes. For example, where the weight does matter or the installation should be as easy as possible. Given the fact that a fibre rope weighs only about an eighth of a steel cable and the combination of cast resin is relatively lightweight, the weight can be reduced by up to 40 percent compared to conventional applications.

“This is not an issue when using thin ropes. However, the difference can be huge for ropes with a diameter of up to 96 mm,” Sven Winter points out. Easy installation is another asset: In the rear part, the rope end connection has a mounting sleeve that can be attached to the lifting device with a few simple steps.

The combination of fibre rope and resin is also extremely durable, as numerous tests have shown. "No matter how often the rope is loaded and relieved, the connection is always stable", explains Sven Winter. The tension-tension fatigue performance is very good.

"We have carried out a four-week test during which the connection was loaded and relieved 1.5 million times. Even after this test the fibre rope sample reached values above the minimum breaking strength of the rope.” Further advantages include an individually adjustable geometry and the option to integrate sensors for measuring the tractive force or for identification purposes via RFID tags.

About six years have passed from the initial idea to a marketable product. Now the time has come for a know-how transfer from university to industry. "We can imagine many different fields of application and are therefore looking for industrial partners to start implementation," explains TLB Innovation Manager Dr.-Ing. Hubert Siller.

The University of Stuttgart has entrusted Technologie-Lizenz-Büro (TLB) GmbH with the marketing of its innovation and the global economic implementation of this cutting-edge technology. It could, for example, be used in lifting and conveying equipment, cranes, in bridge construction, in ship technology and offshore applications such as the construction of wind turbines or the anchoring of oil platforms, says Dr.-Ing. Hubert Siller.

The idea for the new rope end connection was conceived during a research project at the IFT of Stuttgart University. "The ingenious idea came to us when we were working on another project with cast resin. We were wondering why you had to intertwine and cover ropes. Why not simply cast them to make them durable?” inventor Sven Winter shares with us. Together with his colleague Anita Finck-Jung he started to make the first prototype.

"Initially, the compound had a breaking force of only 30 percent, but we knew even back then that it had great potential." After six years of research and countless tests and modifications, the end connection developed by Winter and Finck-Jung can now bear a breaking force of ropes of up to 96 mm. "There is a large variety of possible applications, from very small to very large ones," says Sven Winter. What he needs now are appropriate partners in industry.

Engineer Sven Winter has been testing wire ropes for about 20 years now. Since 2007, he has been in charge of the Rope Technology Division, headed by Prof. Dr.-Ing. Karl-Heinz Wehking, at the Institute of Mechanical Handling and Logistics (IFT). 23 employees from different engineering disciplines work in Winter’s department, which has a 1300 sqm test hall, with various test facilities. Among the customers of IFT’s Rope Technology Division are public institutions, industrial companies and operators of facilities and buildings.

Technologie-Lizenz-Büro (TLB) GmbH supports the University of Stuttgart in patenting and marketing its innovation. Acting on behalf of the University, TLB is in charge of the commercial implementation of this future-orientated technology at a global level. For more detailed information, please contact Dr.-Ing. Hubert Siller, email: siller@tlb.de

Weitere Informationen:

http://www.technologie-lizenz-buero.com/
http://www.uni-stuttgart.de/ift/institut/abteilungen/seiltechnologie

Annette Siller | idw - Informationsdienst Wissenschaft

Further reports about: RFID tags Rope TLB construction cutting-edge technology test facilities

More articles from Machine Engineering:

nachricht Scientists from Hannover develop a novel lightweight production process
27.09.2017 | IPH - Institut für Integrierte Produktion Hannover gGmbH

nachricht PRESTO – Highly Dynamic Powerhouses
15.05.2017 | JULABO GmbH

All articles from Machine Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.

To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

Im Focus: Successful Mechanical Testing of Nanowires

With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong

Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...

Im Focus: Virtual Reality for Bacteria

An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications

Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...

Im Focus: A space-time sensor for light-matter interactions

Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.

The most basic of all physical interactions in nature is that between light and matter. This interaction takes place in attosecond times (i.e. billionths of a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

Midwife and signpost for photons

11.12.2017 | Physics and Astronomy

How do megacities impact coastal seas? Searching for evidence in Chinese marginal seas

11.12.2017 | Earth Sciences

PhoxTroT: Optical Interconnect Technologies Revolutionized Data Centers and HPC Systems

11.12.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>