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Now showing items 21-32 of 32

Laser cutting of CFRP with a fibre guided high power nanosecond laser source - Influence of the optical fibre diameter on quality and efficiency

Bluemel, S.; Bastick, S.; Staehr, R.; Jaeschke, P.; Suttmann, O.; Overmeyer, L. (Amsterdam : Elsevier B.V., 2016)

For the development of a robot based laser cutting process of automotive 3D parts consisting of carbon fibre reinforced plastics (CFRP), investigations with a newly developed fibre guided nanosecond pulsed laser with an ...
Laser-based approach for bonded repair of carbon fiber reinforced plastics

Völkermeyer, Frank; Fischer, Fabian; Stute, Uwe; Kracht, Dietmar (Amsterdam : Elsevier B.V., 2011)

This paper describes a laser-based approach for the bonded repair of fiber reinforced plastic (CFRP) parts. According to CFRP's material properties and sensitivity to thermal loads, short pulsed UV laser radiation is ...
Long-term soil warming decreases microbial phosphorus utilization by increasing abiotic phosphorus sorption and phosphorus losses

Tian, Ye; Shi, Chupei; Malo, Carolina Urbina; Kwatcho Kengdo, Steve; Heinzle, Jakob; Inselsbacher, Erich; Ottner, Franz; Borken, Werner; Michel, Kerstin; Schindlbacher, Andreas; Wanek, Wolfgang ([London] : Nature Publishing Group UK, 2023)

Phosphorus (P) is an essential and often limiting element that could play a crucial role in terrestrial ecosystem responses to climate warming. However, it has yet remained unclear how different P cycling processes are ...
Machine Learning Approach for Optimization of Automated Fiber Placement Processes

Brüning, J.; Denkena, Berend; Dittrich, Marc-André; Hocke, T. (Amsterdam : Elsevier, 2017)

Automated Fiber Placement (AFP) processes are commonly deployed in manufacturing of lightweight structures made of carbon fibre reinforced polymer. In general, AFP is connected to individual manufacturing knowledge during ...
Material removal and chip formation mechanisms of UHC-steel during grinding

Denkena, Berend; Grove, Thilo; Göttsching, Tim (London : Springer, 2017)

The grinding process is still an important manufacturing process for the machining of automotive components. For power train components, ultra-high carbon steel (UHC-steel) is a promising new innovative alloy because of ...
The metabolic potential of Escherichia coli BL21 in defined and rich medium

Li, Zhaopeng; Nimtz, Manfred; Rinas, Ursula (London : BioMed Central Ltd., 2014)

Background: The proteome reflects the available cellular machinery to deal with nutrients and environmental challenges. The most common E. coli strain BL21 growing in different, commonly employed media was evaluated using ...
Novel form-flexible handling and joining tool for automated preforming

Kunz, Holger; Löchte, Christian; Dietrich, Franz; Raatz, Annika; Fischer, Fabian; Dröder, Klaus; Dilger, Klaus (Berlin : De Gruyter, 2015)

The production rates of carbon fiber reinforced plastic (CFRP) parts are rising constantly which in turn drives research to bring a higher level of automation to the manufacturing processes of CFRP. Resin transfer molding ...
On the correlation between the oxygen in hydrogen content and the catalytic activity of cathode catalysts in PEM water electrolysis

Martin, Agate; Trinke, Patrick; van Pham, Chuyen; Bühler, Melanie; Bierling, Markus; Holzapfel, Peter K. R.; Bensmann, Boris; Thiele, Simon; Hanke-Rauschenbach, Richard (Pennington, NJ : Electrochemical Society, 2021)

Altogether five platinum group metal (PGM) and PGM-free cathode catalysts were investigated in full PEM water electrolysis cells regarding their polarisation behaviour and their hydrogen and oxygen recombination properties. ...
Optimising process efficiency during remote laser cutting of CFRP by utilisation of a double-scan-head

Dittmar, Hagen; Herda, Patrick; Jäschke, Peter; Suttmann, Oliver; Overmeyer, Ludger (Amsterdam : Elsevier B.V., 2016)

A double-scan-head was developed combining two pairs of galvo-mirrors into one device. One pair controls the laser beam's position, while the other in this setup is used for a pyrometer. Thus, a pyrometer's optical path ...
Quantitative multilevel analysis of central metabolism in developing oilseeds of oilseed rape during in vitro culture

Schwender, Jörg; Hebbelmann, Inga; Heinzel, Nicolas; Hildebrandt, Tatjana; Rogers, Alistair; Naik, Dhiraj; Klapperstück, Matthias; Braun, Hans-Peter; Schreiber, Falk; Denolf, Peter; Borisjuk, Ljudmilla; Rolletschek, Hardy (Rockville, Md. : American Society of Plant Physiologists, 2015)

Seeds provide the basis for many food, feed, and fuel products. Continued increases in seed yield, composition, and quality require an improved understanding of how the developing seed converts carbon and nitrogen supplies ...
Simulating personal carbon trading (Pct) with an agent-based model (abm): Investigating adaptive reduction rates and path dependence

Kothe, Anna-Katharina; Kuptel, Alexander; Seidl, Roman (Basel : MDPI AG, 2021)

A decade after the publication of seminal papers on personal carbon trading (PCT), few empirical studies on its implementation exist. Investigating how to design, set up and implement a PCT scheme for a community or country ...
The influence of laser welding processes on the weld seam quality of thermoplastic composites with high moisture content

Wippo, V.; Winter, Y.; Jaeschke, P.; Suttmann, O.; Overmeyer, L. (Amsterdam : Elsevier B.V., 2016)

Presently, fiber reinforced materials are used for many industrial applications. Laser transmission welding (LTW) is a suitable method to join these materials. For multiple thermoplastics, the weld seam quality is affected ...

Now showing items 21-32 of 32

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