The F-22 Raptor, a stealth fighter aircraft from Lockheed Martin, first flown in 1997. Titanium alloy (principally grade 5, Ti 6-4) makes up around one-third of the aircraft. Hot isostatic pressing was utilised on large cast parts, such as the canopy deck and wing side-of-body, to minimise porosity and so enhance strength to weight and reliability. Around 350 parts, one-quarter of the aircraft by weight, is made up of resin transfer moulded (RTM) carbon fibre reinforced epoxy composite. High performance carbon fibres are used, such as T700 for lower cost parts, T800 for higher strength parts and T1000 for ultrahigh strength applications. Examples include the fuselage frame, doors, wing spars and honeycomb sandwich panels. Advanced RTM resin systems for these type of applications include epoxy and bismaleimide. The canopy consists of two sheets of polycarbonate (PC), sandwiched between two layers of glass, fusion bonded in an autoclave and drape formed. Indium-tin-oxide is vacuum deposited onto the canopy to reflect radar waves (scatters radio waves in various directions so as not to be detected by radar), which gives it a golden colour tint. Image Lockheed Martin Aeronautics.

Light Light Chair, designed by Alberto Meda for Alias, 1987, is manufactured with Nomex honeycomb core sandwiched between layers of unidirectional carbon fibre reinforced epoxy. Weight is c. 1 kg. Image Alberto Meda.

Polymer concrete terrazzo with coloured marble shards.

The Lotus x Hope HB.T 2020 Team GB Tokyo Olympic carbon fibre composite track bike. A range of carbon fibres are used, from standard to ultra high modulus, depending on the requirements of each specific part of the frame and assembly. Epoxy provides the strongest matrix. The headset and handlebars, as well as other components, are 3D printed titanium (Ti-6Al-4V). In collaboration with Lotus Engineering, Renishaw 3D printed the parts throughout the development process using aluminium alloy (AlSi10Mg), enabling the quick turnaround of design changes. Using carbon fibre for these parts is significantly slower and more restricted, because new moulds are required each time a change is made. With 3D printing, the components can be outputted directly from the updated CAD file.

Reusable silicone membrane for low-pressure moulding onto a single-sided carbon fibre epoxy mould, manufactured by Krempel Group

Jute fibre-reinforced epoxy, produced by Bcomp, compression moulded in a single step with nonwoven jute core.

Cross section through the trailing edge of a wind turbine rotor blade produced from high modulus glass fibre reinforced epoxy over a balsa wood core. The two halves are bonded with two-part epoxy.

KTM Technologies motorcycle brake cover. It consists of a pre-formed epoxy flax composite panel, made with Bcomp's ampliTex, combined with an injection moulded polyamide 6 (PA6), nylon trim.

BMW M have deployed Bcomp flax fibre reinforcement materials in their Motorsport and Formula E racing cars since 2019. Bcomp flax fibre reinforced epoxy front end. Image BMW M.

Curved sandwich panel in flax and bio-based epoxy composite by Veso Biocomposites. It is made in stages: the skins and core are made separately and then bonded together to make the lightweight sandwich structure.

Sandwich panel in flax and bio-based epoxy composite by Veso Biocomposites. It is made in stages: the skins and core are made separately and then bonded together to make the lightweight sandwich structure.

A replica of Eero Saarinen’s iconic 1955 tulip-arm chair using Ekoa, a flax fibre reinforced bio-epoxy composite. Ekoa is suitable for processing via standard composite manufacturing techniques including wet lay-up, compression moulding, infusion and resin transfer moulding (RTM). Image Lingrove.

Tras Cauri bag by Keita Shimizu, 2022, features a moulded flax epoxy (EP-FF) composite shell.

Electric GT Tesla front bumper in flax fibre and epoxy (EP-FF), made by infusion. It utilises Bcomp's ampliTex and powerRibs on the backside for added stiffness.

The Veso Concept built Apache hybrid rally vehicle bodywork, made up of flax fibre reinforced epoxy (EP-FF).

Clara compact concert ukulele from by Blackbird Guitars, made from Lingrove flax fibre reinforced epoxy. The soundboard is tuned for optimal rigidity and density without bracing, combining the tone of wood with the lightness and durability of composite. Image Blackbird Guitars.

Clara compact concert ukulele from by Blackbird Guitars, made from Lingrove flax fibre reinforced epoxy. The soundboard is tuned for optimal rigidity and density without bracing, combining the tone of wood with the lightness and durability of composite. Image Blackbird Guitars.

Kayak paddle, by Mathew Morrisey for Palm Equipment, 2013, made with Bcomp flax reinforced epoxy

Farallon Ekoa tenor ukulele by Blackbird Guitars, made from Lingrove flax fibre reinforced epoxy.

Almost Greener skateboard deck made from layers of maple veneer laminated together with Super Sap bio-based epoxy resin.

Wind turbine blade, produced with high modulus glass fibre, resin infused with epoxy

Various organo sheets, compression moulded by Krempel, featuring unidirectional and woven glass fibre reinforced epoxy and phenolic resin systems. Applications include construction, transport and automotive

Mobile phone battery cover made with pressed glass fibre reinforced epoxy composite

Cross-section through a table top made with relief wood panel encapsulated in cast water-clear epoxy resin
Relevant materials
Epoxy, EP, Resin, Cast

Parabeam 3D woven e-glass fabric, which creates a lightweight sandwich structure when infused with resin.

Moulded Parabeam 3D woven e-glass fabric, which creates a lightweight sandwich structure when infused with resin.

Parabeam 3D woven e-glass fabric, which creates a lightweight sandwich structure when infused with resin.

Yonex Nanoflare 800 Pro badmington racket featuring Toray M40X high modulus (HM) carbon fibre (CF) and ultra high molecular weight polyethylene (UHMWPE) for shock absorption.

Futures HS 4.20 Generation Series designed by Hayden Cox. A mix of materials is used to create the ultimate ride performance. Carbon fibre and glass fibre are used in combination with a nonwoven polyethylene terephthalate (PET), polyester, honeycomb shaped core material. Epoxy resin is infused into the materials under vacuum. The honeycomb has very low resin uptake and saves around one-third of the weight compared to solid laminate.

The facade of the Texoversum Innovation Center, by allmannwappner, Menges Scheffler Architekten and Jan Knippers, 2023. It was developed and constructed as part of the new campus expansion plan of the Reutlingen University of Applied Sciences, Germany. The facade, which helps to shield the building from the sun, is composed of triangular panels measuring approximately four metres in width and 1.5 metres in height, each made by a robotic winding process developed at the University of Stuttgart. Manufactured by FibR, the panels are self-supporting and produced with a mix of white glass fibre and black carbon fibre.

A racing car monocoque survival cell (monocell), which protects the driver in the event of an accident. The capsule is made up of aluminium honeycomb sandwiched between multiple layers of carbon fibre reinforced epoxy (EP-CF). A mix of different carbon fibres are used. Unidirectional M46J and M55J are used in parts that require the highest stiffness; and T1000 and T800 for tension critical areas.

The Colnago C60 is flagship road race frame, handmade in Italy. Using high performance Toray T1000 carbon fibre combined with epoxy, the tubes are bladder moulded and assembled onto the bottom bracket. The frame is clear lacquered to reveal the carbon fibre weave below. To keep weight to a minimum, the chainring is forged and machined from aluminium alloy 7075. Image Colnago.

Cross-section of a hollow composite blade, moulded with the use of a bladder, revealing the layers of super tough aramid inside the high modulus carbon fibre skin, with an inlaid stainless steel leading edge.

Carbon fibre reinforced epoxy (EP-CF) body system and monocoque for the Aptera solar powered vehicle. It is compression moulded from sheet moulding compound (SMC).

Pagani Huayra Roadster carbon fibre body system. The type of carbon fibre used and exact makeup of the chassis and bodywork are a closely guarded secret, but it is likely to be something like an intermediate modulus T700 or thereabouts.

A matt lacquered wing mirror produced from twill-woven carbon fibre reinforced epoxy (EP-CF). Laminated by hand and consolidated in an autoclave.

A matt lacquered wing mirror cover produced from chopped unidirectional carbon fibre reinforced epoxy (EP-CF). Using virgin fibres produces a uniform finish compared to recycled. Laminated by hand and consolidated in an autoclave.

Violin top made from carbon fibre composite, utilising unidirectional fabric construction. As well as being very light and stiff, the composite is unaffected by humidity, which means it will always give the same playing result.

Recycled carbon fibre composite, forged and machined, with an additive in the epoxy that glows in UV light (blacklight), by Carbonium.

Nowadays all professional rackets are made with high performance carbon fibre composite, such as Toray M40X. This is a unidirectional preform for bladder moulding a tennis racket frame. It is placed inside a closed mould and pressure applied from the inside, fording the carbon fibre composite to take the profile of the mould, forming the outside shape.

Fillauer Obsidian Spring Blade lower limb prosthetic fabricated from laminated woven carbon fibre reinforced epoxy. There are many benefits to using carbon fibre composite, including strength-to-weight, stiffness-to-weight and wear resistance.

Pre-preg carbon fibre textile (impregnated with epoxy resin). The protective release film is removed in preparation for laminating.

Pultruded profiles from carbon fibre reinforced epoxy (EP-CF) composite. Utilising carbon fibre in this way reduces the weight of structures by around 30% and 50% compared to conventional aluminium alloys and steel, respectively.

Carbon fibre reinforced epoxy (EP-CF) mould, produced from pre-preg in an autoclave

Narke Electrojet, featuring a painted carbon fibre reinforced epoxy hull

Composite bicycle frame produced with seamless braided carbon fibre tube, bladder moulded with epoxy matrix

Cross-section through a wind turbine rotor blade, showing the balsa wood core, carbon fibre spar cap top and bottom, shear webs bonded with two part epoxy adhesive, and high modulus glass fibre epoxy skin. Altogether, it makes a very strong, light and enduring structure.

Kun Tiqi surfboard produced from balsa wood with hardwood ends. Made by hand, it is shaped and chambered (hollowed out to reduce weight), before a high strength epoxy glass fibre skin is added.

Yana surfboard constructed from solid competition grade balsa, chambered (hollowed out to reduce weight) and skinned with high-strength glass-fibre-reinforced epoxy (EP-GF).
Relevant materials
Balsa, Light, 50-100 kg/m3

Lotus Elise S1 Chassis, launched 1995, manufactured by Hydro Aluminium from extruded 6063 and bent sheet 3105 aluminium alloy, riveted and bonded with 3M epoxy adhesive. The two-part adhesive is post-cured for enhanced strength. The bare chassis weighs just 68 kg.