MAY 2015


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MAY 2015 96 CompositesWorld NEW PRODUCTS » STRUCTURAL ADHESIVE SYSTEMS MMA bonding systems for ground transport SciGrip Smarter Adhesive Solutions (Durham, NC, US) introduced at JEC Europe 2015 its new SG800 range of methyl methacrylate (MMA) bonding systems that are specially formulated and developed for automotive, agricultural vehicles, rail and heavy truck applica- tions. SG800 adhesives, with customizable room-temperature cure, reportedly have 85-90% of the strength of epoxy, but with much higher elongation and toughness, and they can withstand working temperatures up to 120°C. Plus, they produce very low bond-line read-through, for better part aesthetics. SG800 products work with unprimed metals, sheet molding compound (SMC) and dicyclopenta- diene (DCPD) materials. » DESIGN & SIMULATION SOFTWARE Multi-scale modeling platform MSC Software (Newport Beach, CA, US) subsidiary e-Xstream engi- neering, developer of Digimat, a nonlinear multi-scale material and structural modeling platform, announced at JEC its latest software solution, Digimat-VA. It's designed to replace and complement physical testing of composite materials with advanced simulation to enable on-the-fy allowables predictions. It combines a solution-oriented graphical user interface, efcient micromechanical modeling, accurate progressive failure analysis, nonlinear fnite element analysis (FEA) and uncertainty quantifcation. Digimat-VA allows design engineers to virtually compare materials before going into a lengthy physical allowables test process. The software is designed to generate virtual coupons, apply loads and generate test results data, including statistical treatment for allowables computation. The user can choose from a database or defne any material systems, a variety of layups, multiple test types and a variety of environmental conditions. e-Xstream engineering is working with Wichita State University's (Wichita, KS, US) National Institute for Aviation Research (NIAR) to validate Digimat-VA predictions. Validations indicate that a prediction error within 10% is achievable. Initial focus has been on carbon fber/epoxy combinations, but company ofcials say that the methodology is also applicable to continuous fber-reinforced thermoplastics. It is powered by a nonlinear FEA solver coupled with Digimat multi-scale material modeling, including Digimat progressive failure technology. Digimat-VA's developers emphasize that the software is not designed to fully replace the physical testing typically used to develop design allowables data. Instead, by generating virtual allowables, engineers can start the component design in parallel with physical allowables testing. Furthermore, it enables the user to explore material sensitivity to parameters variability and, thus, better understand the performance of composites. Digimat-VA, says e-Xstream, is a decision tool that allows explora- tion and experimentation at low cost; it allows the user to fne-tune material selection and more carefully decide what will be tested in the physical world. The Explosion Proof Bonder-- Redefined w w w . W i c h i T e c h . c o m C a l l u s f o r a p e r s o n a l d e m o : ( 8 0 0 ) 7 7 6 - 4 2 7 7 ❖ 4 1 0 / 2 4 4 - 1 9 6 6 B a l t i m o r e , M a r y l a n d 2 1 2 0 1 U S A Works on 400 Hz Meets Class 1, Division 1 MIL-STD-810F/NEC

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