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Surface Integrity of Glass-Ceramics by Laser-Assisted Diamond Cutting

  • 0Institute of Machinery Manufacturing Technology, China Academy of Engineering Physics, Mianyang 621900, China.
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September 27, 2025

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September 27, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

Laser-assisted diamond cutting softens hard glass-ceramics, improving nano-cutting performance. This study reveals how laser heating enhances material removal and suppresses cracks, optimizing machining quality.

Area Of Science

  • Materials Science
  • Optical Engineering
  • Manufacturing Processes

Background

  • Glass-ceramics are vital for advanced optics but difficult to machine due to hardness and brittleness.
  • Conventional cutting methods often induce cracks and subsurface damage in glass-ceramics.
  • Laser-assisted diamond cutting offers potential for improved nano-machining by localized heating.

Purpose Of The Study

  • To elucidate the dynamic material removal mechanisms in laser-assisted nanoscale cutting of glass-ceramics.
  • To investigate the interplay between laser thermal fields and mechanical responses during cutting.
  • To provide theoretical guidance for optimizing laser-assisted machining parameters.

Main Methods

  • Development of a numerical model for laser-assisted nano-cutting.
  • Systematic analysis of laser heating effects on chip morphology, temperature, stress, and cutting forces.
  • Experimental validation using nanoscale taper cutting to determine the critical depth of no observed surface cracks (NOSC).

Main Results

  • Laser heating significantly softens glass-ceramics, altering chip formation and reducing cutting forces.
  • Quantified enhancement of the critical depth of no observed surface cracks (NOSC) with increasing laser power.
  • Demonstrated inhibition of crack propagation through laser-induced thermal effects, improving subsurface integrity.

Conclusions

  • Laser-assisted nano-cutting effectively improves the machining quality of glass-ceramics by managing thermal and mechanical coupling.
  • Optimized laser parameters can prevent crack initiation and propagation, leading to superior surface and subsurface integrity.
  • The study provides crucial insights for high-precision manufacturing of optical glass-ceramic components.

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