On the mechanics of laser peeling for ultra-thin glasses

Tz Cheng Chiu, Chi An Hua, Chih Han Wang, Kuo Shen Chen, Tian Shiang Yang, Chang Da Wen, Chun Han Li, Mao Chi Lin, Chien Jung Huang, Kun Tso Chen

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Laser peeling is a surface defect removal process involving irradiating laser pulses on edges of ultra-thin glasses. Mechanical- or laser-cutting induced edge defects on glass edges are removed by peeling off a thin layer containing the cutting defects. The new edge-surfaces of the glasses are defect-free and much less prone to cracking failure. In this paper the mechanism of this material removal process is investigated. From experimental observations and theoretical calculations, it is shown that the laser glass peeling is a brittle fracture process driven by residual stress associated to glass surface phase change phenomenon, as opposed to the typical laser ablation material removal. A quantitative fracture mechanics model that simulates the laser induced glass peeling process is also presented.

Original languageEnglish
Pages (from-to)236-247
Number of pages12
JournalEngineering Fracture Mechanics
Volume163
DOIs
Publication statusPublished - 2016 Sep 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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