Bonding strength of material interfaces by a laser induced spallation technique and laser-doppler-interferometry
A laser spallation facility has been developed to measure the strength of planar interfaces between a substrate and a thin coating. The explosive evaporation of a metal layer, confined between a fused quartz crystal and the substrate, induces a compressive shock wave which propagates through the substrate toward the material interface. The investigations are based on measurement of the pressure pulse generated by the threshold flux level that leads to spallation, by using a microelectronics device, and numerical modelling of the induced stress wave propagation. These data compare well with test results on laser-doppler-interferometry.
Bibliographic Reference: Paper presented: 4th International Symposium on Advanced Composites, Corfu (GR), September 18-22, 1995
Availability: Available from (1) as Paper EN 39189 ORA
Record Number: 199511352 / Last updated on: 1995-10-31
Original language: en
Available languages: en