Structural health monitoring (SHM) of architectural glass: optical sensor integration

Researchers involved:

  • Shahryar Nategh (PhD researcher)
  • Jan Belis (supervisor)
  • Jeroen Missinne (supervisor)

Description:

Over the past years, size and number of glass panels in buildings increased substantially. As glass strength is known to reduce over time as a function of e.g. the load history, it is important to know its evolution over the design life time. In this project, the objective is to enable structural health monitoring (SHM) of architectural glass without jeopardizing its transparency. The investigated method makes use of laser technology to write invisible optical sensors, able to capture both strain and temperature, by modifying the bulk of the glass. Bulk modification by laser is known for glasses used at small scales in e.g. micro-electronics, but is novel for soda-lime silica glass used at large scales in construction.