Title:
化学強化ガラスの残留応力の評価方法
Document Type and Number:
Japanese Patent JP7318928
Kind Code:
B2
Abstract:
To provide a method for evaluating the residual stress of a chemically strengthened glass in a non-invasive, non-destructive, and positionally selective manner.SOLUTION: The residual stress σ of a chemically strengthened glass is calculated by deriving the change rate of a specific volume V, which increases by ion exchange, of the residual stress σ of the chemically strengthened glass from the spectrum microscopic Raman scattering spectrum of a Raman scattering light generated by irradiating a glass before the ion exchange and a glass with a zero-residual stress with a laser beam by a microscopic Raman spectroscopic method using a Raman spectroscopic device for the chemically strengthened glass.SELECTED DRAWING: Figure 1
Inventors:
Nobuaki Terakado
Takumi Fujiwara
Yoshihiro Takahashi
Takanari Sasaki
Takumi Fujiwara
Yoshihiro Takahashi
Takanari Sasaki
Application Number:
JP2019219935A
Publication Date:
August 01, 2023
Filing Date:
December 04, 2019
Export Citation:
Assignee:
Tohoku University
International Classes:
G01L1/00; C03C21/00
Domestic Patent References:
| JP2018501175A | ||||
| JP10318923A |
Foreign References:
| CN105547543A |
Attorney, Agent or Firm:
Sumio Tanai
Masato Iida
Shu Oikawa
Masato Iida
Shu Oikawa