Textile Ausrüstung und Ausrüstungstechniken

Hund, Heike; Hund, Rolf-Dieter

doi:10.1007/978-3-642-17992-1_13

Cited by 6 publications

(10 citation statements)

References 30 publications

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“…It can be noted that the SMA-HY variants with an additional PP sheath (3,4), as well as the SMA-HY variants with a DexCoat 8 abherent treatment for their SMA wire (2,4) require much smaller pull-out forces. The specimens with a PP fiber sheath (3,4) showed reduced pull-out forces to about 35%-40% of the pull-out forces determined for the unmodified reference specimen (1). The coating with the abherent system reduced the pull-out force to approx.…”

Section: Resultsmentioning

confidence: 84%

“…The coating with the abherent system reduced the pull-out force to approx. 60% (2) compared to the reference specimen (1). For the coated SMA wires, this can be traced back to the adhesion-reducing effects of the abherent, preventing the positive bonding of matrix and SMA wire.…”

Section: Resultsmentioning

confidence: 99%

“…This structure is more evenly infiltrated by the matrix, leading to the formation of homogeneous adhesion and friction rates. Furthermore, it can safely be assumed that the compacting of the fiber sheath enlarges the effective contact area between fiber and SMA wire in comparison to the reference yarn (1). The material-related friction between GF and SMA wire, which is much lower than the friction between matrix and SMA wire, results in much smaller pull-out forces.…”

Section: Resultsmentioning

confidence: 99%

“…As test liquids water (H 2 O) and diiodomethane (CH 2 I 2 ) were used. The calculation of free surface energy was performed in accordance with the calculation method by Owens-Wendt-Rabel-Kaelble [1,23]. In addition, the surface tension of the matrix system was determined, using K100 single-fiber tensiometer with a platinum plate as reference.…”

Section: Methodsmentioning

confidence: 99%

“…This element is crucial for the quality of the composite. Surface topology and surface energy are considerable influencing variables on the wetting or adhesion behavior of fibers [1]. In FRPCs, one goal is a solid bonding of the matrix to the reinforcement fibers, e.g.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Methods for adhesion/friction reduction of novel wire-shaped actuators, based on shape memory alloys, for use in adaptive fiber-reinforced plastic composites

Kluge

Henneberg

Nocke

et al. 2013

Journal of Industrial Textiles

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For fiber-reinforced plastic composites, fiber-matrix adhesion is a significant aspect of composite properties. While conventional lightweight structures are always aiming for high fiber-matrix adhesion, innovative and unconventional functional constructions require different concepts. The research work treating adaptive fiber-reinforced plastic composites with shape memory alloy wires presented here uses the approach of actuators freely movable within the composite. This is supposed to prevent mechanical tensions in the interfaces of actuator and composite structure, which would otherwise cause damages of the composite. This work examines hybrid yarns based on friction spinning technology, with shape memory alloy wires as their core component as well as glass fibers, and partly polypropylene, as their sheath component. Additionally, the surface properties of the shape memory alloy wires being used are modified by sanding and coating. The results of a characterization by pull-out testing clearly show that a coating of the shape memory alloy wires with an abherent causes considerable decrease in adhesion and friction in the interface and leads to the mobility of the shape memory alloy wires in the later composite. An even greater effect is attained by sheathing the hybrid yarns in an additional layer of polypropylene, compacting the yarn cross-section. Thus, the pull-out force could be reduced to 35-40% of the reference structure.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Methods for adhesion/friction reduction of novel wire-shaped actuators, based on shape memory alloys, for use in adaptive fiber-reinforced plastic composites

Kluge

Henneberg

Nocke

et al. 2013

Journal of Industrial Textiles

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show abstract

Influence of yarn structure and coating on the mechanical performance of continuous viscose fiber/epoxy composites

et al. 2021

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The present study investigated the effect of selected structural parameters on the mechanical performance of regenerated cellulose composites. The experimental setup comprised continuous viscose (rayon) yarns embedded in a matrix of epoxy resin. Mechanical and microscopic characterizations involved comparing the following: yarns consisting of untwisted filaments and twisted warp and weft yarns taken from a plain weave fabric, yarns with and without avivage (fiber finish), as well as yarns with and without an acrylic coating. During the epoxy treatment, samples were either prestressed or laid horizontally to preserve the original yarn structure. Tensile tests revealed that yarn crimp had a significant impact on the strength properties of composite specimens, a higher crimp ratio leading to a decrease in performance. Applying prestress to crimped yarns has proven to be an effective way to enable straight alignment in the loading direction, which is essential for the design of stiffness-and strength-optimized yarn composites. Unlike an avivage, which did not markedly affect the mechanical properties of composite yarns, the application of an acrylic coating prior to resin impregnation was found to provide significantly increased extensibility and more ductile fracture behavior.

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Surface functionalisation of UHMW polyethylene textile with atmospheric pressure plasma

Bartusch

Hund

et al. 2014

Fibers Polym

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Textile Ausrüstung und Ausrüstungstechniken

Cited by 6 publications

References 30 publications

Methods for adhesion/friction reduction of novel wire-shaped actuators, based on shape memory alloys, for use in adaptive fiber-reinforced plastic composites

Methods for adhesion/friction reduction of novel wire-shaped actuators, based on shape memory alloys, for use in adaptive fiber-reinforced plastic composites

Influence of yarn structure and coating on the mechanical performance of continuous viscose fiber/epoxy composites

Surface functionalisation of UHMW polyethylene textile with atmospheric pressure plasma

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