The Experts below are selected from a list of 7008 Experts worldwide ranked by ideXlab platform

Paul T. Williams - One of the best experts on this subject based on the ideXlab platform.

  • Catalytic Hydrothermal Degradation of Carbon Reinforced Plastic Wastes for Carbon Fibre and Chemical Feedstock Recovery
    Waste and Biomass Valorization, 2013
    Co-Authors: Jude A. Onwudili, Eyup Yildirir, Paul T. Williams
    Abstract:

    Recovery of Carbon fibre and chemical feedstock via catalytic hydrothermal degradation of waste Carbon fibre Reinforced Plastic (CFRP) sample was investigated in a stainless steel batch reactor between 400 and 420 °C and pressures of 20 and 25 MPa, respectively. Sodium hydroxide and potassium hydroxide were used as catalysts/additives. Using supercritical water alone, a maximum of 54.5 wt% of resin was removed from the CFRP at 420 °C, but with high recovery of phenol in the liquid residual. The presence of NaOH or KOH alone in water led to up to 81 wt% resin removal, even at short reaction times. Extracts from the liquid residual contained phenol and aniline as the major components; thus representing a potential for monomer recovery. For instance, the use of KOH alone gave phenol yield of 377 mg/(g resin) and aniline yield of 112 mg/(g resin). In addition, the presence of the alkalis led to the recovery of Carbon fibres with very good mechanical properties.

Ya. S. Karpov - One of the best experts on this subject based on the ideXlab platform.

  • Jointing of high-loaded composite structural components. Part 3. An experimental study of strength of joints with transverse fastening microelements
    Strength of Materials, 2006
    Co-Authors: Ya. S. Karpov
    Abstract:

    A system of comprehensive experimental support for strength analysis and design of joints has been developed. It involves an experimental procedure, special specimen designs and test setups. For joints with transverse fastening microelements, we summarize some results of experimental determination of (i) compliance coefficients, (ii) degree of strength degradation in embedment zones of cylindrical pins (0.8, 1.0, 1.5, and 2.0 mm in diameter) and pyramidal (milled) pins in variously structured Carbon-Reinforced Plastic, (iii) bearing strength anisotropy of Carbon-, glass-, and organic-Reinforced Plastics depending on the composite material structure, force direction, dimensions of fastening elements and methods of their installation (mold-embedment in a stack of prepreg plies or insertion into drilled holes in the composite material after polymerization).

Rovere Massimo - One of the best experts on this subject based on the ideXlab platform.

  • Towards Traditional Carbon Fillers: Biochar-Based Reinforced Plastic
    'IntechOpen', 2020
    Co-Authors: Artoli Mattia, Giorcelli Mauro, Jagdale, Pravi Vitthal, Rovere Massimo
    Abstract:

    The global market of Carbon-Reinforced Plastic represents one of the largest economic platforms. This sector is dominated by Carbon black (CB) produced from traditional oil industry. Recently, high technological fillers such as Carbon fibres or nanostructured Carbon (i.e. Carbon nanotubes, graphene, graphene oxide) fillers have tried to exploit their potential but without economic success. So, in this chapter we are going to analyse the use of an unconventional Carbon filler called biochar. Biochar is the solid residue of pyrolysis and can be a solid and sustainable replacement for traditional and expensive fillers. In this chapter, we will provide overview of the last advancement in the use of biochar as filler for the production of Reinforced Plastics

Umberto Polimeno - One of the best experts on this subject based on the ideXlab platform.

  • multifunctional smart composite material for in situ ndt shm and de icing
    Smart Materials and Structures, 2012
    Co-Authors: Fulvio Pinto, Francesco Ciampa, Michele Meo, Umberto Polimeno
    Abstract:

    The past few decades have seen significant growth in the development and application of multifunctional media for the enhancement of material properties, thermo-mechanical and sensing properties. This research work reports a novel approach in which a multifunctional material, herein referred to as SMArt composite, can be employed as a structural health monitoring system for strain sensing and damage detection (SMArt sensing and SMArt thermography), but also as an embedded ice protection tool for structural applications (referred as SMArt de-icing). Such a material, obtained by embedding shape memory alloy (SMA) wires within traditional Carbon Reinforced Plastic composites, relies on the possibility of using the wires both to increase the mechanical properties of composites panels and to exploit their intrinsic electrothermal properties. The electrical resistance variation and the internal power resistive heating source provided by the SMA network, enable a built in and fast assessment of the strain distribution and in situ damage visualization via thermographic imaging. The efficiency of these techniques was experimentally validated on a number of SMArt composite laminates with single and multiple internal defects at various depths. The results showed that strain sensing and damage detection were achieved with high spatial resolution and accuracy, without the need to use large external heaters or complex signal processing techniques.

Jude A. Onwudili - One of the best experts on this subject based on the ideXlab platform.

  • Catalytic Hydrothermal Degradation of Carbon Reinforced Plastic Wastes for Carbon Fibre and Chemical Feedstock Recovery
    Waste and Biomass Valorization, 2013
    Co-Authors: Jude A. Onwudili, Eyup Yildirir, Paul T. Williams
    Abstract:

    Recovery of Carbon fibre and chemical feedstock via catalytic hydrothermal degradation of waste Carbon fibre Reinforced Plastic (CFRP) sample was investigated in a stainless steel batch reactor between 400 and 420 °C and pressures of 20 and 25 MPa, respectively. Sodium hydroxide and potassium hydroxide were used as catalysts/additives. Using supercritical water alone, a maximum of 54.5 wt% of resin was removed from the CFRP at 420 °C, but with high recovery of phenol in the liquid residual. The presence of NaOH or KOH alone in water led to up to 81 wt% resin removal, even at short reaction times. Extracts from the liquid residual contained phenol and aniline as the major components; thus representing a potential for monomer recovery. For instance, the use of KOH alone gave phenol yield of 377 mg/(g resin) and aniline yield of 112 mg/(g resin). In addition, the presence of the alkalis led to the recovery of Carbon fibres with very good mechanical properties.