2D electrical resistance (ER) mapping to Detect damage for carbon fiber reinforced polyamide composites under tensile and flexure loading

Quasi-static perforation response of inter-ply hybrid polypropylene composites at various temperatures

“…Glass fiber has contributed more and more to the composite field as one of the most commonly used reinforcements with its low cost. 14,15 However, hybrid structures have gained prominence to provide enhanced features over a composite with a single type of fiber and to meet the several requirements in recent years. 16,17 To improve the mechanical properties of TPCs, one of the promising approaches is to introduce a secondary reinforcing fiber to obtain a hybrid structure.…”

Lightweight, Highly Efficient, and Recyclable Absorption-Dominated Electromagnetic Interference Shielding Foams Based on Molecularly Designed Polyamide Elastomer/Carbon Nanotube Nanocomposites

“…Polyamides are mainstream plastics with excellent mechanical strength, outstanding chemical stability, and high wear resistance; polyamides are widely used in fabrics, packaging materials, automobile components, and electronics. − Recently, polyamides have been used to develop lightweight, heat-insulating, shock-absorbing, and sound-insulating foams to further expand the application value of such systems. − Among the various foaming technologies used, supercritical carbon dioxide (sc-CO 2 ) foaming has attracted considerable attention because of its environmental friendliness and process stability; both of these advantages effectively overcome the shortcomings of traditional chemical foaming methods, such as the difficulty of precisely controlling the released foaming gas and the residue problem associated with blowing or cross-linking agents within foamed products. − However, traditional polyamide materials have a strong tendency to crystallize, which result in insufficient melt strength during high melting, thus seriously hindering the effective use of sc-CO 2 foaming in such systems. , Multiple methods, such as filler insertion, , chain extension, , and reactive cross-linking, have been proposed to enhance the sc-CO 2 foaming performance of polyamides. However, despite effectively improving the properties of foaming materials, strategies involving the introduction of fillers or additives are often associated with process cost and dispersion problems.…”

Sensing delamination in composites reinforced by ferromagnetic Z-pins via electromagnetic induction

“…An FRP component itself can be considered multi-functional if it possesses adequate multi-physical properties. For example, a carbon FRP component can act as a self-health sensor as it is electrically conductive [3]. An alternative way of achieving multifunctionality for composites is by embedding a functional phase in the baseline material.…”