The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform

Chokri Cherif - One of the best experts on this subject based on the ideXlab platform.

  • Influence of matrix systems on the deformation behavior of adaptive Fiber-Reinforced Plastics
    Journal of Industrial Textiles, 2020
    Co-Authors: Moniruddoza Ashir, Chokri Cherif
    Abstract:

    Adaptive structures contain actuators that enable the controlled modification of system states and characteristics. Furthermore, their geometric configuration as well as physical properties can be varied purposefully. The geometric configuration of adaptive Fiber-Reinforced Plastics can be changed by varying the bending modulus of the matrix material. Hence, this research work presents the influence of thermosetting matrix material with different bending moduli on the deformation behavior of adaptive Fiber-Reinforced Plastics. Firstly, shape memory alloys were converted into shape memory alloy hybrid yarn in order to realize this goal. Subsequently, shape memory alloy hybrid yarn was textile-technically integrated into reinforcing fabrics by means of weaving technology. The bending modulus of the thermosetting matrix material was changed by mixing modifier into it. The Seemann Corporation Resin Infusion Molding Process was used for infusion. Later, the deformation behavior of adaptive Fiber-Reinforced Plastics was characterized. Results revealed that the maximum deformations of adaptive Fiber-Reinforced Plastics with resin and modifier at a mixing ratio of 9:1 and 8:2 were increased to 34% and 63%, respectively, compared to adaptive Fiber-Reinforced Plastics infiltrated by the reference resin. The maximum deformation speed during heating and cooling of adaptive Fiber-Reinforced plastic with the mixing ratio of resin and modifier at a value of 8:2 were 41.17 mm/s and 26.89 mm/s, respectively.

  • Adaptive Fiber-Reinforced Plastics based on open reed weaving and tailored Fiber placement technology:
    Textile Research Journal, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Chokri Cherif
    Abstract:

    The textile-technical integration of shape memory alloys into reinforcing fabrics for the development of adaptive Fiber-Reinforced Plastics (FRPs) has been developed in recent years. This is aimed ...

  • Sampling phased array technology for the detection of voids in carbon Fiber-Reinforced Plastics
    Journal of The Textile Institute, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Andrey Bulavinov, Roman Pinchuk, Chokri Cherif
    Abstract:

    AbstractIn the lightweight material industries, the current focus is on Fiber-Reinforced Plastics, in particular on carbon Fiber-Reinforced Plastics (CFRPs), since they offer higher relative specif...

  • Development of an adaptive morphing wing based on Fiber-Reinforced Plastics and shape memory alloys:
    Journal of Industrial Textiles, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Jan Hindahl, Chokri Cherif
    Abstract:

    The process of integrating smart materials into Fiber-Reinforced Plastics has been used increasingly to create different high-performance products for lightweight applications. This paper presents ...

  • development and mechanical properties of adaptive Fiber Reinforced Plastics
    Journal of Industrial Textiles, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Chokri Cherif
    Abstract:

    Textile-based lightweight structures offer various possibilities for the design of tailored structures by the selective choice of materials and their processing into textile semi-finished products and Fiber-Reinforced Plastics. Lightweight structures with a high mechanical load capacity are feasible by developing Fiber-Reinforced Plastics with adaptive properties that are able to adapt their characteristics, e.g. geometry or stiffness, to external influences. Thus, the application potential of Fiber-Reinforced Plastics can be further expanded. In this paper, we present novel adaptive Fiber-Reinforced Plastics based on textile semi-finished products with integrated shape memory alloys and their mechanical characterization. The shape memory alloy is textile technically integrated and converted into friction spun hybrid yarn. Next, the produced hybrid yarn is integrated with plain, twill and satin woven reinforcement fabric in the weft direction during the shedding operation in weaving. Adaptive Fiber-reinfo...

Moniruddoza Ashir - One of the best experts on this subject based on the ideXlab platform.

  • Influence of matrix systems on the deformation behavior of adaptive Fiber-Reinforced Plastics
    Journal of Industrial Textiles, 2020
    Co-Authors: Moniruddoza Ashir, Chokri Cherif
    Abstract:

    Adaptive structures contain actuators that enable the controlled modification of system states and characteristics. Furthermore, their geometric configuration as well as physical properties can be varied purposefully. The geometric configuration of adaptive Fiber-Reinforced Plastics can be changed by varying the bending modulus of the matrix material. Hence, this research work presents the influence of thermosetting matrix material with different bending moduli on the deformation behavior of adaptive Fiber-Reinforced Plastics. Firstly, shape memory alloys were converted into shape memory alloy hybrid yarn in order to realize this goal. Subsequently, shape memory alloy hybrid yarn was textile-technically integrated into reinforcing fabrics by means of weaving technology. The bending modulus of the thermosetting matrix material was changed by mixing modifier into it. The Seemann Corporation Resin Infusion Molding Process was used for infusion. Later, the deformation behavior of adaptive Fiber-Reinforced Plastics was characterized. Results revealed that the maximum deformations of adaptive Fiber-Reinforced Plastics with resin and modifier at a mixing ratio of 9:1 and 8:2 were increased to 34% and 63%, respectively, compared to adaptive Fiber-Reinforced Plastics infiltrated by the reference resin. The maximum deformation speed during heating and cooling of adaptive Fiber-Reinforced plastic with the mixing ratio of resin and modifier at a value of 8:2 were 41.17 mm/s and 26.89 mm/s, respectively.

  • Adaptive Fiber-Reinforced Plastics based on open reed weaving and tailored Fiber placement technology:
    Textile Research Journal, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Chokri Cherif
    Abstract:

    The textile-technical integration of shape memory alloys into reinforcing fabrics for the development of adaptive Fiber-Reinforced Plastics (FRPs) has been developed in recent years. This is aimed ...

  • Sampling phased array technology for the detection of voids in carbon Fiber-Reinforced Plastics
    Journal of The Textile Institute, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Andrey Bulavinov, Roman Pinchuk, Chokri Cherif
    Abstract:

    AbstractIn the lightweight material industries, the current focus is on Fiber-Reinforced Plastics, in particular on carbon Fiber-Reinforced Plastics (CFRPs), since they offer higher relative specif...

  • Activation time- and electrical power-dependent deformation behavior of adaptive Fiber-Reinforced Plastics
    Journal of Composite Materials, 2019
    Co-Authors: Moniruddoza Ashir
    Abstract:

    There is considerable need for research into the application potential of adaptive Fiber-Reinforced Plastics based on shape memory alloys, in particular with regard to industry-specific solutions. Hence, this paper presents the activation time- and voltage amplitude-dependent deformation behavior of adaptive Fiber-Reinforced Plastics incorporating shape memory alloy. In order to attain this goal, shape memory alloy was textile-technically converted into shape memory alloy hybrid yarn using the friction spinning technology. Subsequently, the manufactured hybrid yarn was integrated into the reinforcing fabric in the warp direction using weaving technology. To increase the deformation potential of the adaptive Fiber-Reinforced plastic, a hinged woven fabric was developed by floating of the warp yarn. The functionalized preform was infused by the Seemann Corporation Resin Infusion Molding Process. Later, an extensive electro-mechanical characterization of the adaptive Fiber-Reinforced plastic by varying electrical power resulting from the varying voltage amplitude and activation time was completed. The maximum deformation of adaptive Fiber-Reinforced Plastics was achieved at an electrical power of 95 W (50 V/1.9 A) and 60 s of thermal induced activation.

  • Development of an adaptive morphing wing based on Fiber-Reinforced Plastics and shape memory alloys:
    Journal of Industrial Textiles, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Jan Hindahl, Chokri Cherif
    Abstract:

    The process of integrating smart materials into Fiber-Reinforced Plastics has been used increasingly to create different high-performance products for lightweight applications. This paper presents ...

Andreas Nocke - One of the best experts on this subject based on the ideXlab platform.

  • Adaptive Fiber-Reinforced Plastics based on open reed weaving and tailored Fiber placement technology:
    Textile Research Journal, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Chokri Cherif
    Abstract:

    The textile-technical integration of shape memory alloys into reinforcing fabrics for the development of adaptive Fiber-Reinforced Plastics (FRPs) has been developed in recent years. This is aimed ...

  • Sampling phased array technology for the detection of voids in carbon Fiber-Reinforced Plastics
    Journal of The Textile Institute, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Andrey Bulavinov, Roman Pinchuk, Chokri Cherif
    Abstract:

    AbstractIn the lightweight material industries, the current focus is on Fiber-Reinforced Plastics, in particular on carbon Fiber-Reinforced Plastics (CFRPs), since they offer higher relative specif...

  • Development of an adaptive morphing wing based on Fiber-Reinforced Plastics and shape memory alloys:
    Journal of Industrial Textiles, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Jan Hindahl, Chokri Cherif
    Abstract:

    The process of integrating smart materials into Fiber-Reinforced Plastics has been used increasingly to create different high-performance products for lightweight applications. This paper presents ...

  • development and mechanical properties of adaptive Fiber Reinforced Plastics
    Journal of Industrial Textiles, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Chokri Cherif
    Abstract:

    Textile-based lightweight structures offer various possibilities for the design of tailored structures by the selective choice of materials and their processing into textile semi-finished products and Fiber-Reinforced Plastics. Lightweight structures with a high mechanical load capacity are feasible by developing Fiber-Reinforced Plastics with adaptive properties that are able to adapt their characteristics, e.g. geometry or stiffness, to external influences. Thus, the application potential of Fiber-Reinforced Plastics can be further expanded. In this paper, we present novel adaptive Fiber-Reinforced Plastics based on textile semi-finished products with integrated shape memory alloys and their mechanical characterization. The shape memory alloy is textile technically integrated and converted into friction spun hybrid yarn. Next, the produced hybrid yarn is integrated with plain, twill and satin woven reinforcement fabric in the weft direction during the shedding operation in weaving. Adaptive Fiber-reinfo...

  • a statistical approach for the fabrication of adaptive pleated Fiber Reinforced Plastics
    Composite Structures, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Jan Hindahl, Chokri Cherif
    Abstract:

    Abstract The increasing demand for Fiber Reinforced Plastics for different high-tech lightweight applications requires their continuous development, for example, by means of high functional density. Among various smart materials, Fiber Reinforced Plastics can be functionalized by actuator materials, in particular shape memory alloys. This paper presents a statistical approach to the fabrication of adaptive pleated Fiber Reinforced Plastics. Three geometrical factors – pleat thickness, pleat height and the spacing between two pleats were identified by the half-normal probability plot that affect the deformation of adaptive pleated Fiber Reinforced Plastics during the activation of shape memory alloys. Overall, four responses were evaluated by means of the design of experiment. Significant statistical models were found for the deformation, level loss per cycle, heating and cooling speed of adaptive pleated Fiber Reinforced Plastics. These statistical models were validated through experimental data by the goodness of fit function. The results of the statistical model tended to fit experimental results.

Hsuanteh Hu - One of the best experts on this subject based on the ideXlab platform.

  • Numerical analysis of square Reinforced concrete plates strengthened by Fiber-Reinforced Plastics with various patterns
    Composites Part B-engineering, 2013
    Co-Authors: Cindrawaty Lesmana, Hsuanteh Hu, Nan Ming Huang
    Abstract:

    Abstract Abaqus finite element program is employed to analyze the ultimate load capacities of square Reinforced concrete plates strengthened by Fiber-Reinforced Plastics. Appropriate constitutive models are introduced and validated to stimulate nonlinear material behavior of Reinforced concrete and Fiber-Reinforced Plastics. The influences of FRP reinforcement, steel reinforcement, and concrete properties on the ultimate strengths of the Reinforced concrete plates are investigated. Finally, based on the numerical results, empirical equations are proposed to predict increment of ultimate load capacities of the square Reinforced concrete plates strengthened by Fiber-Reinforced Plastics, which would be useful for practical engineering applications.

  • Constitutive modeling of Reinforced concrete and prestressed concrete structures strengthened by Fiber-Reinforced Plastics
    Composite Structures, 2010
    Co-Authors: Hsuanteh Hu, Y.-f. Huang
    Abstract:

    A batch of constitutive models for steel reinforcing bar, prestressing tendon, concrete and Fiber-Reinforced plastic are proposed for the nonlinear finite element analysis of Reinforced concrete structures, prestressed concrete structures, Reinforced concrete structures strengthened by Fiber-Reinforced Plastics and prestressed concrete structures strengthened by Fiber-Reinforced Plastics. These material models have been tested against series of experimental data and good agreements have been obtained, which justifies the validity and the usefulness of the proposed nonlinear constitutive models.

  • nonlinear finite element analysis of Reinforced concrete beams strengthened by Fiber Reinforced Plastics
    Composite Structures, 2004
    Co-Authors: Hsuanteh Hu
    Abstract:

    Abstract Numerical analyses are performed using the ABAQUS finite element program to predict the ultimate loading capacity of rectangular Reinforced concrete beams strengthened by Fiber-Reinforced Plastics applied at the bottom or on both sides of these beams. Nonlinear material behavior, as it relates to steel reinforcing bars, plain concrete, and Fiber-Reinforced Plastics is simulated using appropriate constitutive models. The influences of Fiber orientation, beam length and reinforcement ratios on the ultimate strength of the beams are investigated. It has been shown that the use of Fiber-Reinforced Plastics can significantly increase the stiffnesses as well as the ultimate strengths of Reinforced concrete beams. In addition, with the same Fiber-Reinforced Plastics layer numbers, the ultimate strengths of beams strengthened by Fiber-Reinforced Plastics at the bottom of the beams are much higher than those strengthened by Fiber-Reinforced Plastics on both sides of the beams.

Jan Hindahl - One of the best experts on this subject based on the ideXlab platform.

  • Development of an adaptive morphing wing based on Fiber-Reinforced Plastics and shape memory alloys:
    Journal of Industrial Textiles, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Jan Hindahl, Chokri Cherif
    Abstract:

    The process of integrating smart materials into Fiber-Reinforced Plastics has been used increasingly to create different high-performance products for lightweight applications. This paper presents ...

  • a statistical approach for the fabrication of adaptive pleated Fiber Reinforced Plastics
    Composite Structures, 2019
    Co-Authors: Moniruddoza Ashir, Andreas Nocke, Jan Hindahl, Chokri Cherif
    Abstract:

    Abstract The increasing demand for Fiber Reinforced Plastics for different high-tech lightweight applications requires their continuous development, for example, by means of high functional density. Among various smart materials, Fiber Reinforced Plastics can be functionalized by actuator materials, in particular shape memory alloys. This paper presents a statistical approach to the fabrication of adaptive pleated Fiber Reinforced Plastics. Three geometrical factors – pleat thickness, pleat height and the spacing between two pleats were identified by the half-normal probability plot that affect the deformation of adaptive pleated Fiber Reinforced Plastics during the activation of shape memory alloys. Overall, four responses were evaluated by means of the design of experiment. Significant statistical models were found for the deformation, level loss per cycle, heating and cooling speed of adaptive pleated Fiber Reinforced Plastics. These statistical models were validated through experimental data by the goodness of fit function. The results of the statistical model tended to fit experimental results.