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A hybrid overmoulded aircraft cabin bracket made of VICTREX AE 250 carbon fibre PAEK composite and VICTREX PEEK polymer.

Victrex and Safran Cabin to launch flexible composite platform for multiple aircraft bracket projects

Safran Cabin, a world leading supplier of cabin interiors, and Victrex worked together to qualify thermoplastic composite parts on aircraft. A flexible platform is being designed to cut planning and time-to-market of multiple brackets, with the first being a hybrid overmolded aircraft cabin bracket made of VICTREX AE 250 carbon-fibre-PAEK composite and VICTREX PEEK polymer.

Victrex, a world leader in high-performance polymer solutions, provided the material, process and tooling expertise required to realize versatile design features while meeting key performance parameters. Safran Cabin provided critical expertise in design and manufacturing to ensure applicability in aerospace service and certification environments.

"We need to respond to many demands for aircraft brackets and similar structural parts, with each case having many loading, constraint and exposure conditions," said Tyler Smithson, Sr. R&T Engineer at Safran Cabin. "The key to success is to develop a flexible composite platform that can be used for multiple projects, lowering our part count and design complexity, cutting time-to-market, speeding time-to-revenue. Working with Victrex, we think that's what we've achieved!"

Victrex and Safran Cabin utilised an innovative technique where VICTREX AE 250 thermoplastic composite is overmolded with VICTREX PEEK high-performance polymer. This "hybrid overmolding" technique is a scalable, repeatable technology with potential to help commercial aerospace customers face the challenges of needing much lower scrap rates, faster cycle times, part consolidation and reduction in the number of secondary operations. Stringent testing and qualification work have indicated that structural aircraft parts produced from VICTREX AE 250 via hybrid overmolding can withstand high levels of mechanical stress.

Driving future aerospace design

With Safran Cabin, the design process focused on defining parts and moulds adaptable for multiple brackets, with the goal of achieving a family of designs compatible with the same mould. This involved establishing a cost and weight advantage while considering the flexibility of the platform to be used in various applications.

Following the initial design phase, mould-filling and structural simulation methods were combined with various physical testing techniques to identify and mitigate new technology failure modes and to streamline injection molding manufacturing and cost constraints. Critical characteristics were refined and a productive, repeatable design process has been developed.

"At Victrex we are proud of our track record in introducing 'disruptive' technological approaches in the sectors that we serve, using our know-how in the processing and performance of PAEK materials to accelerate the commercialization process." commented Tim Herr, Director Aerospace at Victrex. "Hybrid overmolding and VICTREX AE 250 composites are certainly within this category but this is just the beginning. We continue to test our composites offering, with support from our customers and partners in order to demonstrate the full potential of these materials."

Superior performance: brackets to be put to service later this year

The initial prototype brackets were produced at Tri-Mack Plastics Manufacturing Corporation. Compared to the original aluminum part, the prototype composite resulted in have shown up to 20% cost savings; 50% weight savings; and a 5x better buy-to-fly ratio.

Currently the bracket is scheduled for final testing and qualification of production parts. The plan is to put the composite bracket in service later in 2019.

Press release issued by Victrex Plc on September 23, 2019

 

 Contact details from our directory:
Victrex Plc Powder Coatings, Prepreg, Polymer Composites, Thermoplastics, Plastic Tubing, Plastic Films, Plastic Resins
Safran Cabin (was Zodiac Cabin Interiors) Emergency Lighting Systems, Injection Moulding, Cabin Lighting, Crew Rest Modules, Crew Seating, Aircraft Interiors, Air Conditioning Equipment, Passenger Service Units (PSUs), Storage Bins, Cabin Management Systems, Galleys, Aircraft Interior Furniture, Airborne Waste Removal Systems, Lavatory Equipment, Fire & Smoke Detectors, Evacuation Systems, Automatic Passenger Briefing Equipment, Acoustic Insulation, Slides, Water Systems, Passenger Seating, Oxygen Systems

 

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Plastics
Composites

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