title: Experimental modal analysis on fresh-frozen human hemipelvic bones employing a 3D laser vibrometer for the purpose of modal parameter identification.
abstract: To provide a close-to-reality simulation model, such as for improved surgery planning, this model has to be experimentally verified. The present article describes the use of a 3D laser vibrometer for determining modal parameters of human pelvic bones that can be used for verifying a finite elements model. Compared to previously used sensors, such as acceleration sensors or strain gauges, the laser vibrometric procedure used here is a non-contact and non-interacting measuring method that allows a high density of measuring points and measurement in a global coordinate system. Relevant modal parameters were extracted from the measured data and provided for verifying the model. The use of the 3D laser vibrometer allowed the establishment of a process chain for experimental examination of the pelvic bones that was optimized with respect to time and effort involved. The transfer functions determined feature good signal quality. Furthermore, a comparison of the results obtained from pairs of pelvic bones showed that repeatable measurements can be obtained with the method used.
authors.affiliation: Fraunhofer Institute for Machine Tools and Forming Technology IWU, Nöthnitzer Str. 44, 01187 Dresden, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Neugebauer
authors.forename: M
authors.initials: M
authors.lastname: Werner
authors.forename: C
authors.initials: C
authors.lastname: Voigt
authors.forename: H
authors.initials: H
authors.lastname: Steinke
authors.forename: R
authors.initials: R
authors.lastname: Scholz
authors.forename: S
authors.initials: S
authors.lastname: Scherer
authors.forename: M
authors.initials: M
authors.lastname: Quickert
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001696:Biomechanical Phenomena; D003198:Computer Simulation; D005260:Female; D020342:Finite Element Analysis; D006801:Humans; D007834:Lasers; D008297:Male; D008875:Middle Aged; D008953:Models, Anatomic; D010384:Pelvic Bones / Q000033:anatomy & histology* / Q000502:physiology; D010388:Pelvis / Q000473:pathology; D012984:Software; D014732:Vibration