Method for detecting defect of glass fiber

Abstract

Abstract PURPOSE:To detect automatically and at a high speed a minute defect of a glass fiber by making the glass fiber pass through a through-hole provided on a microwaveguide, and comparing a transmitting waveform and a receiving waveform of a microwave. CONSTITUTION:A glass fiber G of a woven cloth form is made to pass through a waveguide 8 through which a microwave is transmitted at a constant speed. In this case, a defect of the glass fiber G is detected by measuring a phase difference of waveform in a transmitter 1 of a microwave and a waveform in a receiver 10 by a displacement meter 11. Also, the glass fiber is made to pass through a through-hole 9'' pierced on a waveguide 16 placed between a circulator 17 and a resistive terminal plate 18, and a defect of the glass fiber can be detected from a variation of a reflected waveform of a microwave.

Inventors

• 👤 Susumu Tabata
• 👤 田畑　進
• 👤 Tomoatsu Sato
• 👤 友厚 佐藤
• 👤 Ryoji Shida
• 👤 志田　良治
• 👤 Chokichiro Shibata
• 👤 長吉郎 柴田

Bibliographic Details