Laser welding process development and optimization for thin Al and stainless-steel foils

In the fabrication of a battery-free water leak detector, packaging process requires to expose the sensor to water in a specific way, while protecting some electronics components on the inside from water. This research is to develop a high-speed and high precision laser microwelding process to fabricate an aluminum or stainless steel foil water-proof housing for the electronics of AquaSensing’s battery-free water leak detector. Firstly, weldability of aluminum or stainless-steel foils, particularly the weld appearance, the defects in welds and the laser welding parameter window, will be investigated to study the feasibility of laser microwelding for water leak detector electronic housing. The optimization of the laser welding process will be conducted to minimize the defects of welds, and fabricate a water leak-free sample. The completion of this research will accelerate the production design and increase the robustness and reliability of partner’s advanced battery-free water leak detector.

Faculty Supervisor:

Peng Peng

Student:

Partner:

AquaSensing

Discipline:

Engineering

Sector:

Manufacturing

University:

University of Waterloo

Program: