title: Ultrasonic measurements of surface roughness.
abstract: Pulsed ultrasound propagating in water was used at megahertz carrier frequencies (nominally 10-50MHz) to reflect and scatter from rough surfaces in the same way as light. We have considered noncontact ultrasonic techniques as complementary to optical techniques in several ways: (a) for specificapplications such as wet surfaces, (b) for rougher surfaces with average roughness, R(a) ≥ 0.1 µm, and (c) for (simultaneous) profilometry by time-of-flight measurements. Stylus and ultrasonic data are compared. An example of application to the manufacturing environment is for on-line, real-time sensor feedback and process control in the cutting or grinding of metals and ceramics.
authors.forename: G V
authors.initials: GV
authors.lastname: Blessing
authors.forename: J A
authors.initials: JA
authors.lastname: Slotwinski
authors.forename: D G
authors.initials: DG
authors.lastname: Eitzen
authors.forename: H M
authors.initials: HM
authors.lastname: Ryan