Monthly Archives: November 2024

‘Efficient Recovery Of Carbon Fibers From Carbon Fiber-reinforced Polymers Using Direct Discharge Electrical Pulses – Nature.com’

Nature.com Nov 30, 2024

Carbon fiber-reinforced polymers CFRPs are lightweight high-strength composite materials that are widely used in various industries. However recycling CFRPs remains a significant challenge because of the difficulty in separating carbon fibers CFs from the polymer matrix. This study compares two electrical pulse methods namely direct discharge DD and electrohydraulic fragmentation EHF for the energy-efficient and precise recovery of CFs from CFRPs. The DD method involves the direct application of high-voltage pulses to the CFRPs leveraging the Joule heat generation thermal stress generation and expansion force caused by plasma generation. In contrast EHF is based on intensive shockwave impulses generated by high-voltage discharge plasmas along the interfaces of different materials. We examined the physical properties of the recovered CFs namely their length tensile strength resin adhesion and structural degradation as well as the energy efficiency of the two methods in terms of CF separation. The results showed that DD is more effective for CF recovery considering the preservation of long fibers with high strength and the separation of individual fibers without residual resin on the surface.

‘3D Printing Metal And Advanced Composites – Cutting Tool Engineering’

Cutting Tool Engineering Oct 23, 2024

A 3D-printed metal bolt is removed from Markforgeds FX10 printer. Markforged Billed as the worlds first the FX10 3D composite printer with the FX10 Metal Kit print engine from Markforged Holding Corp. is said to enable printing both metal filaments and composites with continuous fiber reinforcement.