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 Nanostructured Alloying with Oxygen
09.04.2018 | Max-Planck-Institut für Eisenforschung GmbH

nachricht Enhanced ball screw drive with increased lifetime through novel double nut design
23.01.2018 | Technologie Lizenz-Büro (TLB) der Baden-Württembergischen Hochschulen 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: BAM@Hannover Messe: innovative 3D printing method for space flight

At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.

Powder-based additive manufacturing in zero gravity is the name of the project in which a component is produced by applying metallic powder layers and then...

Im Focus: Molecules Brilliantly Illuminated

Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.

Molecules are the building blocks of life. Like all other organisms, we are made of them. They control our biorhythm, and they can also reflect our state of...

Im Focus: Spider silk key to new bone-fixing composite

University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.

Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

Im Focus: Gamma-ray flashes from plasma filaments

Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.

The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Complete skin regeneration system of fish unraveled

24.04.2018 | Life Sciences

Scientists create innovative new 'green' concrete using graphene

24.04.2018 | Materials Sciences

BAM@Hannover Messe: innovative 3D printing method for space flight

24.04.2018 | Trade Fair News

VideoLinks
Science & Research
Overview of more VideoLinks >>>