Werkstoffangebot für den Leichtbau

Degischer, H. P.; Skrna-Jakl, Isabella C.; Poletti, Cecilia

doi:10.1002/9783527628247.ch2

Cited by 4 publications

(4 citation statements)

References 12 publications

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“…Lightweight desing -LW) nastaje kao rezultat potrebe za održivim dizajnom i razvojem proizvoda, te radi potrebe za pogodnim izborom materijala. Pravilnim izborom materijala može se smanjiti masa kako pojedinih elemenata, tako i ukupne konstrukcije, što direktno utiče na smanjenje energije i resursa, te očuvanje životne sredine [1][2][3]. Dizajn za lake konstrukcije pronalazi svoju primjenu u raznim oblastima, mada je njegova primjena najzastupljenija u automobilskoj i avionskoj industriji.…”

Section: Uvodunclassified

Joining technology of steel and alluminum alloy sheets: State of the art

Đurić,

Milčić,

Klobčar

et al. 2023

Zavariv zavar konstrukcije

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Multi-material design was developed as a modern design concept for lightweight structures (Lightweight design - LW) which aims to integrate different types of materials into one structure. The main problem when joining sheets made of different, i.e. dissimilar materials, primarily steel and aluminum alloys, are the different mechanical, physical and chemical properties of the materials being joined. Through this paper, the state of the art will be analyzed when it comes to modern technologies for joining steel and aluminum alloys sheets. The term "modern joining technique" refers to all innovative joining technologies that have been developed or have seen significant application in the last few years.

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Section: Uvodunclassified

Joining technology of steel and alluminum alloy sheets: State of the art

Đurić,

Milčić,

Klobčar

et al. 2023

Zavariv zavar konstrukcije

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“…The origin of basalt fibres (BF) goes back to developments by Russian researchers in the middle of the 20th century. Usage of basalt fibres was initially limited to applications in space and defense industry [1, 2]. Basalt fibres are obtained from natural and almost inexhaustible lava rock, which occurs to about 13% in the earth's crust.…”

Section: Introductionmentioning

confidence: 99%

In situfunctionalisation of organomineral hybrid resins for tough basalt fibre reinforced plastics

Kopietz

Friedrich

Wetzel

2020

Plastics, Rubber and Composites

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This work addresses the usability of novel and sustainable basalt fibre reinforced composites (BFRP) with special emphasis to their structural integrity and fracture toughness G Ic , compared to state-of-the-art ECR glass fibre composites (GFRP). Toughness was determined via Double Cantilever Beam (DCB) tests and evaluated both the Area Method (AM) and Corrected Beam Theory (CBT) yielding equivalent results. The organomineral matrix (3P Resin®) was made from (poly)isocyanate, water glass, and an environmentally unfavourable phosphate emulsifier. Phosphate was substituted by renewable oil (denoted as 2P resin) what reduced composites' toughness, and thus an in situ functionalisation by silaneterminated polyurethane (STP-U) was performed. Consequently, the 2P/STP-U resin proved better adhesion to fibres and strongly enhanced toughness. G Ic exceeded the conventional 3P composites by 50% (BFRP) and 88% (GFRP), respectively. If both tough and highly sustainable composites are required at the same time, the BFRP with 2P/STP-U is superior to the GFRP solution.

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“…In the 21 st century many researchers and R&D facilities have proposed many advanced innovative forming methods in metal forming during recent years dealing with this problem. These particular forming methods do reveal both advantages and disadvantages with regard to suitability for different types of sheet metal forming processes [2]. Fig.…”

Section: Introductionmentioning

confidence: 99%

Deep Drawing of One-Sided, Stiffness Increasing Sheet Metal Composites

Hofmann

Liewald

2016

KEM

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Hybrid sheet metal composites do show advantages compared to monolithic materials when strength, stiffness, and damping characteristics are set to a global optimum. Even though the mechanical properties of hybrid sheet metal composites have been improved in recent years, the application of such hybrid materials in the automotive industry is not well-established due to insufficient knowledge about their forming characteristics (e.g. in deep drawing process). Stiffness increasing composites consist of two metal sheets and a viscoelastic damping layer in-between: the outer sheet reveals stamped beads which increases stiffness of composite while the inner sheet serves as cover sheet. This paper deals with challenges of formability of stiffness increasing composites in industrial deep-drawing processes. The main concern is dimensional stability and accuracy of those layered materials after finishing the forming process. In order to ensure accuracy of formed parts, a methodology was developed for increased quality of sheet metal composites. Depending on the drawing limit ratios and blankholder forces, which evaluate the drawability of component in general, the drawing limit ratio is influenced for profound or insufficient residual bead heights and widths. Besides insufficient bead height, which causes a reduction in moment of inertia, inner marks on the visible outer sheet hamper a broad application in practical use. Finally, paper provides detailed recipies for manufacturing and tool layout for deep drawing objectives of such composite material.

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Werkstoffangebot für den Leichtbau

Cited by 4 publications

References 12 publications

Joining technology of steel and alluminum alloy sheets: State of the art

Joining technology of steel and alluminum alloy sheets: State of the art

In situfunctionalisation of organomineral hybrid resins for tough basalt fibre reinforced plastics

Deep Drawing of One-Sided, Stiffness Increasing Sheet Metal Composites

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