IJAT Vol.17 No.5 pp. 521-528
doi: 10.20965/ijat.2023.p0521

Research Paper:

Effects of Temperature and Relative Humidity on Crack Propagation Behavior During Wheel Scribing of Alkali-Free Glass Sheet

Ryota Someno, Kentaro Imai, Yuichiro Matsumoto, Souta Matsusaka ORCID Icon, Sho Itoh ORCID Icon, Hirofumi Hidai ORCID Icon, Akira Chiba, and Noboru Morita

Department of Mechanical Engineering, Chiba University
1-33 Yayoi-cho, Inage-ku, Chiba, Chiba 263-8522, Japan

Corresponding author

March 5, 2023
June 6, 2023
September 5, 2023
thermo-hygrostat, wheel scribing, crack propagation, stress corrosion

The effects of the ambient temperature and relative humidity on crack propagation behavior during wheel scribing were investigated. A chamber was built to allow dynamic observation of crack propagation behavior in a controlled atmosphere. A developed miniature scriber was installed in the chamber, and the crack propagation behavior was observed from lateral and back sides during wheel scribing under various atmospheric conditions. As a result, the median crack propagation rate increased with relative humidity. We speculated that this was caused by the stress corrosion of glass. Although stress corrosion is considered to be more reactive at higher temperatures, the results of scribing at different temperatures showed that higher temperatures did not necessarily increase median crack propagation. This is due to the formation of lateral cracks before the median cracks have fully propagated. These results suggest that the interaction between multiple cracks should be considered when discussing the effects of temperature and humidity in wheel scribing.

Cite this article as:
R. Someno, K. Imai, Y. Matsumoto, S. Matsusaka, S. Itoh, H. Hidai, A. Chiba, and N. Morita, “Effects of Temperature and Relative Humidity on Crack Propagation Behavior During Wheel Scribing of Alkali-Free Glass Sheet,” Int. J. Automation Technol., Vol.17 No.5, pp. 521-528, 2023.
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