polymerguru

Today's KNOWLEDGE Share Developing repairs for thermoplastic composite aerostructures! The HyPatchRepair project (2019-2022) was funded by the #German government, as part of the LuFo-V3 #aerospace research program, to demonstrate rivet-free repair technology for continuous #fiberreinforced TPC parts. The goal was a set of automated repair techniques to restore the original load-carrying capacity, geometry and aerodynamic surface without adding weight for parts such as #fuselageskins , #wings , #winglets and empennage components, including rudders. These techniques would prepare the repair area, fabricate a load-optimized repair patch and then integrate the patch into the repair area using proven and cost-effective technologies. The German HyPatchRepair consortium was led by research institutes Faserinstitut Bremen and Laser Zentrum Hannover. The project included Airbus Operations, #aircraftrepair services provider Lufthansa Technik , small aircraft manufacturer Silence Aircraf...

 Researchers from MIT Lincoln Laboratory and their collaborators at the Massachusetts General Hospital (MGH) Center for Ultrasound Research and Translation (CURT) have developed a new medical imaging device: the Noncontact Laser Ultrasound (NCLUS). This laser-based ultrasound system provides images of interior body features such as organs, fat, muscle, tendons, and blood vessels. The system also measures bone strength and may have the potential to track disease stages over time. "Our patented skin-safe laser system concept seeks to transform medical ultrasound by overcoming the limitations associated with traditional contact probes," explains principal investigator Robert Haupt, a senior staff member in Lincoln Laboratory's  Active Optical Systems Group . Haupt and senior staff member Charles Wynn are co-inventors of the technology, with assistant group leader Matthew Stowe providing technical leadership and oversight of the NCLUS program. Rajan Gurjar is the system integ...

CGTech, the developer of VERICUT verification, simulation and optimisation software, is announcing an exciting reseller agreement with Bristol-based iCOMAT, pioneer of the first-ever defect-free tape-steering process for composite component production. The special worldwide arrangement will see iCOMAT sell and support a dedicated version of VERICUT VCP/VCS software in support of its patented manufacturing process for composites. Providing the basis for this success is #iCOMAT’s unique composites #production process, known as Rapid Tow Shearing (RTS). Due to manufacturing limitations, conventional composite part design relies on straight fibre layers, leading to structures which use more material than necessary and are heavier and more expensive as a result. In contrast, iCOMAT’s innovative process enables the #defectfree steering of #compositetapes for the first time. The placement of these tapes along complex load paths delivers highly optimised structures with dramatic weight sav...

Today's KNOWLEDGE Share When trying to move to plant-based or biosourced plastic materials, a whole host of challenges will come-up. Due to intrinsically lower Tg of bio-materials, chances are that you will have to transition to semi-crystalline materials and develop a very skillful mastering of precise shrinkage control in your molding process. Subtle physical phenomena including molecular orientation, flow induced crystallinity, slow dimensional recovery by relaxation will make your life a bit more complicated. Lower thermal stability will also seriously tighten-up your limits in terms of thermal control and residence time in your process. Drying may suddenly become a critical step too. Overall, a much better and deeper understanding of the molding process and specific plastic materials will be needed to address these challenges. Source:Vito Leo Follow: http://polymerguru.blogspot.com #plastics #biobased #injectionmolding #shrinkage #semicrystalline #thermal #orientation

The furnace is the first of its type in Australia, allowing UQ researchers to make the next generation of ultra-high temperature composite materials for hypersonic flight. Hypersonic vehicles travel more than five times faster than the speed of sound, and Associate Professor Michael Heitzmann said they have to be made from materials that can withstand extremely high temperatures caused by aerodynamic heating. “That’s where UQ and our new furnace at the Centre for Advanced Materials Processing and Manufacturing – or AMPAM comes in,” Dr Heitzmann said. “We are working directly with industry to identify appropriate and cost-effective high temperature #ceramicmatrixcomposites or CMCs, tailored to hypersonic flight applications. In areas like a rocket nozzle or a hypersonic vehicle, the temperatures we’re talking about approach those seen on the surface of the sun. We are trying to get the utmost temperature resistance out of our material and find the most thermal-resistant materials possi...

OQ Chemicals to supply ISCC PLUS certified Oxbalance® TCD Alcohol DM (tricyclodecane dimethanol), in response to growing market preferences for environmentally friendly alternatives. This product is manufactured using the bio-circular precursor DCPD ( #dicyclopentadiene ) from #Shell Chemicals Europe, which is also #ISCC Plus certified. The strategic #collaboration between the two companies will ensure a reliable supply of bio-circular DCPD to support OQ Chemicals’ production. Sustainable & Environmentally Conscious Alternative TCD Alcohol DM serves as a versatile component in the production of high-performance technical polymers, paints and coatings, and adhesives used across sectors such as food packaging, electronics, and automotive. It is valued for its exceptional ability to enhance the properties of the final product, including improved durability, chemical resistance, and thermal stability. The #biobasedOxbalance TCD Alcohol DM serves as a #sustainable and...