Axial Tension - Explore the Science & Experts | ideXlab

Scan Science and Technology

Contact Leading Edge Experts & Companies

Axial Tension

The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform

Youhe Zhou – 1st expert on this subject based on the ideXlab platform

  • lap joint characteristics of the ybco coated conductors under Axial Tension
    IEEE Transactions on Applied Superconductivity, 2014
    Co-Authors: Xingyi Zhang, Jun Zhou, Youhe Zhou

    Abstract:

    In this paper, we present a solder method for the lap joint of the YBa2Cu3O7-x coated conductor (YBCO CC) without removing the metallic stabilizer. Several solder joints with the same overlap of 80 mm were manufactured. In the case of self-field and at liquid nitrogen temperature, the resistances of solder joints are equal to about 10 n Omega. In addition, the resistance is not influenced by the Axial Tension force and external magnetic field. The critical current degradation caused by the Axially applied strain and external magnetic field exhibits consistent behavior of the original YBCO CC. At room temperature, the mechanical property of the specimen with joint is determined by the original tape. Moreover, at 77 K, the Tension characteristic of the sample with and without joint exceeds that at room temperature.

  • Lap Joint Characteristics of the YBCO Coated Conductors Under Axial Tension
    IEEE Transactions on Applied Superconductivity, 2014
    Co-Authors: Xingyi Zhang, Jun Zhou, Youhe Zhou

    Abstract:

    In this paper, we present a solder method for the lap joint of the YBa2Cu3O7-x coated conductor (YBCO CC) without removing the metallic stabilizer. Several solder joints with the same overlap of 80 mm were manufactured. In the case of self-field and at liquid nitrogen temperature, the resistances of solder joints are equal to about 10 nΩ. In addition, the resistance is not influenced by the Axial Tension force and external magnetic field. The critical current degradation caused by the Axially applied strain and external magnetic field exhibits consistent behavior of the original YBCO CC. At room temperature, the mechanical property of the specimen with joint is determined by the original tape. Moreover, at 77 K, the Tension characteristic of the sample with and without joint exceeds that at room temperature.

  • self enhancement of the critical current of yba2cu3o7 x coated conductors caused by the Axial Tension
    Applied Physics Letters, 2013
    Co-Authors: Xingyi Zhang, Jun Zhou, Youhe Zhou

    Abstract:

    We have measured the critical current of the YaBa2Cu3O7−x coated conductor under an Axial Tension. In the case of liquid nitrogen temperature and self-field ambient, a fascinating self-enhancement (about 25%) of the critical current of the specimens after the Axial Tension and a suitable waiting time were observed in the experiments. A theoretical model based on the waiting time and the Tension strain is presented, which quantitatively agrees with the experimental results very well.

Z Q Ye – 2nd expert on this subject based on the ideXlab platform

  • Uniform Axial Tension effect of electroless plating Ni-P coated fiber Bragg grating
    Guangxue Jingmi Gongcheng Optics and Precision Engineering, 2012
    Co-Authors: C -f Rao, Hua Zhang, Yan Feng, L -l Xiao, Z Q Ye

    Abstract:

    To research the uniform Axial Tension effect of an Electroless plating Ni-P coated Fiber Bragg Grating (ENFBG), the stress and strain properties of the ENFBG were analyzed based on its Axial symmetry. The finite element method was used for theoretical calculations, then it was verified by following experiments. Theoretical calculation shows that under uniform Axial Tension, the core of the ENFBG is drawn uniformly, the shearing strain is far less than normal strain and can be omitted. The normal strain is proportional to the Axial Tension, and the change of center wavelength of ENFBG is proportional to that of the Tension too. However, because of the difference of mechanic parameters between electroless plating Ni-P coating and optical fiber, the metal coating reduces the uniform Axial Tension sensitivity of the FBG. In sensor experiment, when the thickness of the coating is 7.25 μm, the sensitivity is 12.45 pm/MPa, R-square is 0.9996, and the theoretical calculation value is 12.744 pm/MPa. Moreover, the sensitivity is decreased with the increase of the thickness of metal coating. The ENFBG is an excellent uniform Axial Tension sensor, because its center wavelength shows high linearity to uniform Axial Tension and its metal coating can provide good protection.

Melody Yakta – 3rd expert on this subject based on the ideXlab platform

  • effect of the stone wales sw defect on the response of bnnt to Axial Tension and compression a quantum chemical study
    Structural Chemistry, 2015
    Co-Authors: Hossein Roohi, Mahjoubeh Jahantab, Melody Yakta

    Abstract:

    Using density functional theory, effect of the Stone–Wales (SW) defect on the structural and electronic properties of (6,0) zigzag single-walled boron nitride nanotube (BNNT) under Axial Tension and compression was investigated at B3LYP/6-31+G(d) level of theory. The calculated binding energy for SW defective BNNT is estimated to be smaller than pristine BNNT. In Stone–Wales defected BNNT (SW–BNNT), the defect region serves as a nucleation site for fraction. It is predicted that the fracture is started from the N–N bond connecting the pentagon and heptagon rings, which is different from fracture mechanism proposed for carbon nanotubes (CNT) with similar location of SW defects. Increase in the energy difference between defective and perfect BNNT, ∆E = E SW − E perfect, was predicted upon Axial Tension. According to our calculation, band gap energy of the SW–BNNT decreases under Axial Tension and increases under Axial compression. It is predicted that the SW–BNNT and in turn its tensile form are more suitable than perfect one for photoconductivity applications.

  • Effect of the Stone–Wales (SW) defect on the response of BNNT to Axial Tension and compression: a quantum chemical study
    Structural Chemistry, 2014
    Co-Authors: Hossein Roohi, Mahjoubeh Jahantab, Melody Yakta

    Abstract:

    Using density functional theory, effect of the Stone–Wales (SW) defect on the structural and electronic properties of (6,0) zigzag single-walled boron nitride nanotube (BNNT) under Axial Tension and compression was investigated at B3LYP/6-31+G(d) level of theory. The calculated binding energy for SW defective BNNT is estimated to be smaller than pristine BNNT. In Stone–Wales defected BNNT (SW–BNNT), the defect region serves as a nucleation site for fraction. It is predicted that the fracture is started from the N–N bond connecting the pentagon and heptagon rings, which is different from fracture mechanism proposed for carbon nanotubes (CNT) with similar location of SW defects. Increase in the energy difference between defective and perfect BNNT, ∆E = E SW − E perfect, was predicted upon Axial Tension. According to our calculation, band gap energy of the SW–BNNT decreases under Axial Tension and increases under Axial compression. It is predicted that the SW–BNNT and in turn its tensile form are more suitable than perfect one for photoconductivity applications.