The Experts below are selected from a list of 135 Experts worldwide ranked by ideXlab platform

Bikramjit Basu - One of the best experts on this subject based on the ideXlab platform.

  • 3D powder printed tetracalcium phosphate scaffold with phytic acid binder: fabrication, microstructure and in situ X-Ray tomography analysis of compressive failure
    Journal of Materials Science: Materials in Medicine, 2018
    Co-Authors: Sourav Mandal, Susanne Meininger, Uwe Gbureck, Bikramjit Basu
    Abstract:

    One of the important aspects in 3D powder printing (3DPP) is the selection of binder for a specific material composition to produce scaffolds with desired microstructure and physico-chemical properties. To this end, a new powder-binder combination, namely tetracalcium phosphate (TTCP) and phytic acid (IP6) was investigated at ambient temperature, for low load Bearing Application. A minimal deviation (

  • 3d powder printed tetracalcium phosphate scaffold with phytic acid binder fabrication microstructure and in situ x ray tomography analysis of compressive failure
    Journal of Materials Science: Materials in Medicine, 2018
    Co-Authors: Sourav Mandal, Susanne Meininger, Uwe Gbureck, Bikramjit Basu
    Abstract:

    One of the important aspects in 3D powder printing (3DPP) is the selection of binder for a specific material composition to produce scaffolds with desired microstructure and physico-chemical properties. To this end, a new powder-binder combination, namely tetracalcium phosphate (TTCP) and phytic acid (IP6) was investigated at ambient temperature, for low load Bearing Application. A minimal deviation (<200 µm, w.r.t. computer aided design) was observed in the final sample through optimization of 3DPP process, along with minimum strut and macro-pore size of 200 and 750 µm, respectively. Importantly, the printed scaffolds exhibited compressive strength of 4–8.5 MPa (in the range of cancellous bone) and in vitro dissolution experiments in phosphate buffered saline (PBS) upto one month revealed gradual degradation in strength property. The TTCP scaffolds are characterized to be moderately porous (~40%) with high interconnectivity, which is essential for vascularization and good osteoconductivity. Another major aim of this study was to demonstrate the failure mechanism of 3D powder-printed scaffolds using monotonic and intermittent compression coupled with micro-computed tomography (µCT) imaging. Analyzing these results, we have demonstrated the origin of crack generation and propagation under compressive loading in relation to the unique microstructure, obtained through 3DPP. These findings enable us to acquire a deeper insight of the relationship between structural attributes and failure behavior, to further tailor the 3D powder printing process for ceramic biomaterials.

Sourav Mandal - One of the best experts on this subject based on the ideXlab platform.

  • 3D powder printed tetracalcium phosphate scaffold with phytic acid binder: fabrication, microstructure and in situ X-Ray tomography analysis of compressive failure
    Journal of Materials Science: Materials in Medicine, 2018
    Co-Authors: Sourav Mandal, Susanne Meininger, Uwe Gbureck, Bikramjit Basu
    Abstract:

    One of the important aspects in 3D powder printing (3DPP) is the selection of binder for a specific material composition to produce scaffolds with desired microstructure and physico-chemical properties. To this end, a new powder-binder combination, namely tetracalcium phosphate (TTCP) and phytic acid (IP6) was investigated at ambient temperature, for low load Bearing Application. A minimal deviation (

  • 3d powder printed tetracalcium phosphate scaffold with phytic acid binder fabrication microstructure and in situ x ray tomography analysis of compressive failure
    Journal of Materials Science: Materials in Medicine, 2018
    Co-Authors: Sourav Mandal, Susanne Meininger, Uwe Gbureck, Bikramjit Basu
    Abstract:

    One of the important aspects in 3D powder printing (3DPP) is the selection of binder for a specific material composition to produce scaffolds with desired microstructure and physico-chemical properties. To this end, a new powder-binder combination, namely tetracalcium phosphate (TTCP) and phytic acid (IP6) was investigated at ambient temperature, for low load Bearing Application. A minimal deviation (<200 µm, w.r.t. computer aided design) was observed in the final sample through optimization of 3DPP process, along with minimum strut and macro-pore size of 200 and 750 µm, respectively. Importantly, the printed scaffolds exhibited compressive strength of 4–8.5 MPa (in the range of cancellous bone) and in vitro dissolution experiments in phosphate buffered saline (PBS) upto one month revealed gradual degradation in strength property. The TTCP scaffolds are characterized to be moderately porous (~40%) with high interconnectivity, which is essential for vascularization and good osteoconductivity. Another major aim of this study was to demonstrate the failure mechanism of 3D powder-printed scaffolds using monotonic and intermittent compression coupled with micro-computed tomography (µCT) imaging. Analyzing these results, we have demonstrated the origin of crack generation and propagation under compressive loading in relation to the unique microstructure, obtained through 3DPP. These findings enable us to acquire a deeper insight of the relationship between structural attributes and failure behavior, to further tailor the 3D powder printing process for ceramic biomaterials.

Susanne Meininger - One of the best experts on this subject based on the ideXlab platform.

  • 3D powder printed tetracalcium phosphate scaffold with phytic acid binder: fabrication, microstructure and in situ X-Ray tomography analysis of compressive failure
    Journal of Materials Science: Materials in Medicine, 2018
    Co-Authors: Sourav Mandal, Susanne Meininger, Uwe Gbureck, Bikramjit Basu
    Abstract:

    One of the important aspects in 3D powder printing (3DPP) is the selection of binder for a specific material composition to produce scaffolds with desired microstructure and physico-chemical properties. To this end, a new powder-binder combination, namely tetracalcium phosphate (TTCP) and phytic acid (IP6) was investigated at ambient temperature, for low load Bearing Application. A minimal deviation (

  • 3d powder printed tetracalcium phosphate scaffold with phytic acid binder fabrication microstructure and in situ x ray tomography analysis of compressive failure
    Journal of Materials Science: Materials in Medicine, 2018
    Co-Authors: Sourav Mandal, Susanne Meininger, Uwe Gbureck, Bikramjit Basu
    Abstract:

    One of the important aspects in 3D powder printing (3DPP) is the selection of binder for a specific material composition to produce scaffolds with desired microstructure and physico-chemical properties. To this end, a new powder-binder combination, namely tetracalcium phosphate (TTCP) and phytic acid (IP6) was investigated at ambient temperature, for low load Bearing Application. A minimal deviation (<200 µm, w.r.t. computer aided design) was observed in the final sample through optimization of 3DPP process, along with minimum strut and macro-pore size of 200 and 750 µm, respectively. Importantly, the printed scaffolds exhibited compressive strength of 4–8.5 MPa (in the range of cancellous bone) and in vitro dissolution experiments in phosphate buffered saline (PBS) upto one month revealed gradual degradation in strength property. The TTCP scaffolds are characterized to be moderately porous (~40%) with high interconnectivity, which is essential for vascularization and good osteoconductivity. Another major aim of this study was to demonstrate the failure mechanism of 3D powder-printed scaffolds using monotonic and intermittent compression coupled with micro-computed tomography (µCT) imaging. Analyzing these results, we have demonstrated the origin of crack generation and propagation under compressive loading in relation to the unique microstructure, obtained through 3DPP. These findings enable us to acquire a deeper insight of the relationship between structural attributes and failure behavior, to further tailor the 3D powder printing process for ceramic biomaterials.

Uwe Gbureck - One of the best experts on this subject based on the ideXlab platform.

  • 3D powder printed tetracalcium phosphate scaffold with phytic acid binder: fabrication, microstructure and in situ X-Ray tomography analysis of compressive failure
    Journal of Materials Science: Materials in Medicine, 2018
    Co-Authors: Sourav Mandal, Susanne Meininger, Uwe Gbureck, Bikramjit Basu
    Abstract:

    One of the important aspects in 3D powder printing (3DPP) is the selection of binder for a specific material composition to produce scaffolds with desired microstructure and physico-chemical properties. To this end, a new powder-binder combination, namely tetracalcium phosphate (TTCP) and phytic acid (IP6) was investigated at ambient temperature, for low load Bearing Application. A minimal deviation (

  • 3d powder printed tetracalcium phosphate scaffold with phytic acid binder fabrication microstructure and in situ x ray tomography analysis of compressive failure
    Journal of Materials Science: Materials in Medicine, 2018
    Co-Authors: Sourav Mandal, Susanne Meininger, Uwe Gbureck, Bikramjit Basu
    Abstract:

    One of the important aspects in 3D powder printing (3DPP) is the selection of binder for a specific material composition to produce scaffolds with desired microstructure and physico-chemical properties. To this end, a new powder-binder combination, namely tetracalcium phosphate (TTCP) and phytic acid (IP6) was investigated at ambient temperature, for low load Bearing Application. A minimal deviation (<200 µm, w.r.t. computer aided design) was observed in the final sample through optimization of 3DPP process, along with minimum strut and macro-pore size of 200 and 750 µm, respectively. Importantly, the printed scaffolds exhibited compressive strength of 4–8.5 MPa (in the range of cancellous bone) and in vitro dissolution experiments in phosphate buffered saline (PBS) upto one month revealed gradual degradation in strength property. The TTCP scaffolds are characterized to be moderately porous (~40%) with high interconnectivity, which is essential for vascularization and good osteoconductivity. Another major aim of this study was to demonstrate the failure mechanism of 3D powder-printed scaffolds using monotonic and intermittent compression coupled with micro-computed tomography (µCT) imaging. Analyzing these results, we have demonstrated the origin of crack generation and propagation under compressive loading in relation to the unique microstructure, obtained through 3DPP. These findings enable us to acquire a deeper insight of the relationship between structural attributes and failure behavior, to further tailor the 3D powder printing process for ceramic biomaterials.

James Njuguna - One of the best experts on this subject based on the ideXlab platform.

  • thermo mechanical performance of poly lactic acid flax fibre reinforced biocomposites
    Materials & Design, 2015
    Co-Authors: Elias Nassiopoulos, James Njuguna
    Abstract:

    Abstract In this study, the thermo-mechanical performance of flax fibre reinforced poly lactic acid (PLA) biocomposites was investigated for the potential use in load Bearing Application such as body-in-white and body structures in the automotive sector. Focus was given into the relationships between the thermal and mechanical properties, and the material response under different loading and environmental conditions. The strength (72 MPa) and stiffness (13 GPa) of flax/PLA composites investigated indicate a very promising material to replace traditional choices in load Bearing Application. The PLA’s crystallinity was measured to approximately 27%. Annealing above 100 °C for an hour decreased that value to 30%, but analysis of tensile results of annealed specimens reveals a significant reduction of both the tensile strength and modulus. This reduction is associated with micro-cracking that occurred on the surface of PLA during the heating as well as deterioration of the flax properties due to drying. The study results show that strength and modulus increased with increasing strain rates, while elongation at break reduces respectively. A modulus of 22 GPa was recorded in 4.2 m/s crosshead velocity. Further, flax/PLA showed significantly higher modulus than flax/epoxy for the composites studied. Improvement of the interfacial bonding and the temperature characteristics, combined the thermoplastic nature of PLA, demonstrates that flax/PLA composites is ideal for use in structural automotive Applications.