Pressure-sensing film
Staff -- Test & Measurement World, 6/1/2005
Tactile pressure sensor film (TPSF) from Sensor Products can help engineers map pressure distribution and magnitude between any two surfaces. For example, TPSF can be used in engine gaskets to evaluate adequate torque and consistency of junctions in head, valve cover, oil pan, and intake/exhaust manifold gaskets and o-rings. In brakes and clutches, the film can be used to verify consistent compressive force across brake shoe or clutch surfaces (top photo). It can also be used to determine the location and force of impact during airbag deployment (bottom photo).
Available in seven pressure ranges measuring 2 to 43,200 psi, TPSF comes in a clear mylar sheet. When placed between contacting surfaces, the film permanently changes color in correlation to the amount of pressure applied; pressure magnitude can be determined by comparing color variations to a color-correlation chart. Sensor Products, www.sensorprod.com.
