Spectroscopy and Spectral Analysis, Volume. 40, Issue 12, 3736(2020)

Separation of Tire Rubber Overlapping Terahertz Spectra Using Non-Negative Matrix Factorization of Spectral Feature Constraints

Xian-hua YIN1,1、*, Yu LIU1,1, Mu-lin FENG1,1, An LI1,1, and Wei MO1,1
Author Affiliations
  • 1[in Chinese]
  • 11. School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China
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    Figures & Tables(10)
    Schematic diagram of THz-TDS systemLaser: Laser source; M1—M14: Reflector; A1—A4: Diaphragm; HWP: Half wave plate; CBS: Cube beamspllitters; Chopper: Optical chopper; L1—L3: ConVex lens; PM1—PM4: Off-axis parabolic mirror; QWP: Quarter wave plate; WP: Wollaston prism; Detector: Pulse detector
    THz absorbance spectrum of NBR, MBT and TMTM
    THz absorbance spectrum of nine different concentration mixtures(a): Binary system; (b): Ternary system
    A plot of relative contribution versus factor number by PCA(a): Binary system; (b): Ternary system
    Best resolved spectra of binary system extracted by CNMF(a): NBR; (b): MBT
    Best resolved spectra of ternary system extracted by CNMF(a): NBR; (b): MBT; (c): TMTM
    • Table 1. Concentration ratio information of binary system

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      Table 1. Concentration ratio information of binary system

      编号NBR/%MBT/%样品数量
      110906
      220806
      330706
      440606
      550506
      660406
      770306
      880206
      990106
    • Table 2. Concentration ratio information of ternary system

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      Table 2. Concentration ratio information of ternary system

      编号NBR/%TMTM/%MBT/%样品数量
      1505456
      25010406
      35015356
      45020306
      55025256
      65030206
      75035156
      85040106
      9504556
    • Table 3. Spectral separation result of binary system

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      Table 3. Spectral separation result of binary system

      组分方法相关系数r/%光谱角SA
      NMF79.650.573
      NBRPNMF90.730.392
      CNMF91.21 0.357
      NMF83.320.473
      MBTPNMF95.780.213
      CNMF 96.89 0.102
    • Table 4. Spectral separation result of ternary system

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      Table 4. Spectral separation result of ternary system

      组分方法相关系数r/%光谱角SA
      NMF66.230.593
      NBRPNMF87.250.476
      CNMF89.33 0.433
      NMF82.570.533
      MBTPNMF 92.49 0.419
      CNMF92.370.493
      NMF80.320.558
      TMTMPNMF95.270.201
      CNMF 98.88 0.089
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    Xian-hua YIN, Yu LIU, Mu-lin FENG, An LI, Wei MO. Separation of Tire Rubber Overlapping Terahertz Spectra Using Non-Negative Matrix Factorization of Spectral Feature Constraints[J]. Spectroscopy and Spectral Analysis, 2020, 40(12): 3736

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    Paper Information

    Category: Research Articles

    Received: Nov. 7, 2019

    Accepted: --

    Published Online: Jun. 18, 2021

    The Author Email: Xian-hua YIN (yxh4417@guet.edu.cn)

    DOI:10.3964/j.issn.1000-0593(2020)12-3736-07

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