Fiber-optic Sensing for Press Forming of L-shaped Thermoplastic Composites

Shin Ichi Takeda, Takuhei Tsukada, Shu Minakuchi, Nobuo Takeda, Yutaka Iwahori

Research output: Contribution to journalConference article

1 Citation (Scopus)


Fiber Bragg grating sensors (FBG) were embedded into the CF/PPS laminates to demonstrate the monitoring of the press forming of the L-shaped CFRTPs (Carbon Fiber Reinforced Thermoplastics). In-plane strain of the flexion represented a unique change from contact with the flat plate to position of bottom dead center. Residual strains along the FBG are able to evaluate directly, which is mainly caused by cooling part of the press forming process. Moreover a non-axisymmetric strain in the FBG was evaluated at the flexion. Fiber-optic sensing probably become beneficent technology to improve a press forming process of CFRTPs.

Original languageEnglish
Pages (from-to)348-353
Number of pages6
JournalProcedia Engineering
Publication statusPublished - 1 Jan 2017
Event6th Asia Pacific Workshop on Structural Health Monitoring, APWSHM 2016 - Hobart, Australia
Duration: 7 Dec 20169 Dec 2016



  • fiber Bragg grating
  • press forming
  • thermoplastic composites

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