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CompositesWorld New Products for Dec. 18, 2019

The latest technology from Dassault Systèmes, and Airborne
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VR system now compatible with 3DEXPERIENCE platform

VRgineers’ XTAL virtual reality (VR) system is now compatible with Dassault Systèmes’ 3DEXPERIENCE platform.

VR simulation program

Source | VRgineers

VRgineers’ (Marina Del Ray, Calif., U.S.) XTAL virtual reality (VR) system is now compatible with Dassault Systèmes’ (Waltham, Mass., U.S.) 3DEXPERIENCE platform, including applications CATIA, SOLIDWORKS, ENOVIA, DELMIA and SIMULIA.

The addition of 3DEXPERIENCE compatibility enables engineers to get the most out of both software systems, VRgineers says, without having to invest in additional powerwall, projection systems and cluster infrastructur 

The added software support is said to enable engineers to utilize a powerful VR solution capable of total immersion for the powerful 3DEXPERIENCE platform, instead of being required to invest in a costly Powerwall, projection systems and cluster infrastructure. According to the company, XTAL offers high resolution and an excellent optical system. 

With immediate support for all non-administrative applications on Dassault Systèmes’ 3DEXPERIENCE platform, XTAL will initially enable basic VR functionality, meaning full control of navigation, measurements, sections and more.

“With its ultra-high resolution visuals and peripheral vision-filling field-of-view, XTAL allows users to make better decisions in color and trim, because fine material details can be clearly seen and evaluated. Our clients also see a benefit in perceived quality reviews where gap measurements and tolerance simulations are judged based on their effect on the subjective, perceived build quality of a product,” says Marek Polčák, VRgineers co-founder and CEO.




Core filler for aircraft interiors promises less weight, lower costs

Von Roll’s NEXT GEN core filler is designed to maximize local stiffness and increase strength of honeycomb core in composite sandwich panels while saving weight.

aircraft interior core Von Roll

Source | Von Roll

Von Roll’s (Breitenbach, Switzerland) NEXT GEN core filler is designed to maximize local stiffness and increase strength of honeycomb core in composite sandwich panels while saving weight. According to Von Roll’s internal testing, NEXT GEN core filler’s most important advantages are its long pot and storage life at ambient conditions, and its precise dosability, which the company says makes this product the ideal choice for automated honeycomb potting in aircraft interior applications and other industries.

According to Von Roll, application of filler compounds can be one of the most time-consuming parts of manual sandwich structure construction. The automation of this process can cut production costs by more than 30%, not only by reducing the manual labor hours, but also by reducing material scrap rates while increasing quality and repeatability. The velocity of the robot tool during dispensing of the potting material is limited by the maximum extrusion rate, so a material providing a higher extrusion rate than state-of-art potting resins allows for higher production throughput. 

The NEXT GEN core filler can either be dosed and inserted into the honeycomb core manually with a spatula or using high-precision automation with a robot-based metering system. Von Roll says that pairing NEXT GEN core filler with automated potting can result in up to 20% material savings. The company also claims the filler can lead to cost reductions through higher accuracy and repeatability of the potting, which reduces material waste, manual labor in the manufacturing process and non-conformities.

extrusion behavior for honeycomb core filler

Source | Von Roll

The core filler promises extremely low viscosity, leading to precise, homogenous and reliable filling for honeycomb cells as small as 3 mm. Von Roll also says the low viscosity results in high extrusion rates when using robots in an automated application process, enabling users to process more material in less time in a faster production process compared to traditional materials. In addition, fillings in circles, angular shapes or honeycomb form are possible for local reinforcements.

Von Roll says its fillers exclude smell- and volatilization-causing anhydrides, halogens and solvents. Unlike other fillers that consist of two components that need to be mixed before use, NEXT GEN core filler comes in a single component ready for use.

The product’s low density of 0.7 g/cm3 or lower is reported to offer significant weigth reduction benefits. With standard curing temperatures between 125°C and 150°C, the NEXT GEN core filler is said to be compatible with all kinds of curing processes and cycle times of common prepregs for the aircraft interior industry. Furthermore, it is reportedly easy to handle and store, able to be stored up to 5 weeks at room temperature, even in contact with humidity.  In addition, the core filler’s expansion coefficient is near 0 under the influence of heat or load.

Von Roll honeycomb core filler

Source | Von Roll

In addition, NEXT GEN core filler is compatible with phenolics and epoxies. For example, it is compatible with a new class of Von Roll’s FST compliant prepregs belonging to the EP200 family, which are said to provide the highest mechanical properties and surfacing quality on standard honeycomb cores and can be processed together with the core filler on any kind of honeycomb support.

Two variants of the NEXT GEN core filler are currently available: EP401 and EP411, to offer to the market solutions which are compatible with or without the use of a dedicated press.

This development is compliant with the requirements and regulations of the aviation industry, including all criteria of non-flammability and fire-retardancy properties. Von Roll says it has supplied the NEXT GEN core filler to certified European Tier 1s in the aerospace industry and is working on the product qualification at short notice.

In order to amplify the automated application process, Von Roll has partnered with digital solutions provider Airborne (The Hague, Netherlands) and ViscoTec (Kennesaw​​​​​​​, Ga., U.S.), supplier of dosing pumps and dosing systems for medium to high-viscosity fluids, to deliver filling for aircraft interior panels through a one-hand metering system for this product.




Multi-walled carbon nanotubes available in three forms

Goodfellow’s multi-walled carbon nanotubes are available as regular powder, “chunky” powder or free-standing “carpets.” 

Goodfellow’s (Coraopolis, Pa., U.S.) multi-walled carbon nanotubes (MWCNTs) are available in three different forms: regular powder, “chunky” powder and free-standing “carpets.” All three forms are produced by means of a catalytic chemical vapor deposition (CCVD) process.

Regular powder is available in research quantities of several grams up to economical mass production quantities of several kilos.

What the company calls “chunky” powder, exclusive to Goodfellow, is said to be safer and easily dispersed via sonication into a polymer matrix. It is available in small quantities for research.

Free-standing, vertically aligned MWCNTs arrays, called “carpets” or “forests” — also exclusive to Goodfellow — are distinguished by their anisotropic properties. According to the company, current research revolves around potential uses as free-standing membranes and filters, thermal interface materials, in electronic devices and supercapacitors, and by embedding them in polymer matrices for the production of innovative composites. MWCNTs “carpets” are available in small quantities for research.

Carbon nanotubes are tube-shaped materials composed of carbon atoms covalently bonded in hexagonal network, having a nanometric diameter. As an additive in composites, they can improve the mechanical, thermal or electrical properties of a material, offering benefits such as high electrical conductivity, good processability, flame retardancy, thermal dissipation, UV resistance and more. Industries where these attributes are especially beneficial include aerospace, automotive, electronics, energy, oil and gas, coatings and sporting goods.