In addition to that, they have great pressure resistance and tensile strength. What is more, the opportunity for 3-D shaping opens the possibility of creating completely new types of products.
Scientists at the textile research centre of the Hohenstein Institute in Boennigheim, have worked out key process parameters for the prototype of a laser sewing machine, the TexWeld 140 made by the Prolas company.
In conjunction with his Bachelor's thesis, Philipp Kirst of Albstadt-Sigmaringen University, worked with the project leader, Dr. Edith Claßen and her team in defining threshold values for temperature, speed and conveyor roll intervals as well as the use of absorbers while welding different textile materials.
In order to assess the quality of the seams beyond inspecting them visually, a comprehensive series of tests of the fusion zones were carried out with the help of a scanning electron microscope. Textile technology tests were also required primarily to test tear and water resistance.
A final showpiece was used to demonstrate the diverse possibilities opened by the laser welding of thermoplastic textiles of synthetic fibres or laminated materials. A surgical smock made of three-layered, laminated fabric featuring different straight and round seam structures revealed the full design spectrum of modern laser welding technology.
Dr. Claßen's team (firstname.lastname@example.org) will be investigating the possibilities of welding fabric blends in the coming months.
Rose-Marie Riedl | idw
Decoding cement's shape promises greener concrete
08.12.2016 | Rice University
Scientists track chemical and structural evolution of catalytic nanoparticles in 3-D
08.12.2016 | DOE/Brookhaven National Laboratory
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
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