ifm abrasion resistance test
ifm engineers developed an abrasion test to replicate the harsh weld slag cleaning process. The rotary test fixture placed several ifm metal face sensors in direct contact with three wire wheel brushes. The wire brushes continuously rotated over the sensor faces. For comparison, plastic and teflon face sensors were also tested.

Results
After one million passes, the ifm metal face sensor was still operable, providing 100% of its sensing range. After 2,000 passes, the plastic and teflon sensor faces had deteriorated and the sensors failed to operate.

Video of abrasion resistance test (Flash video)