Ultrasonic wave velocity measurement in small polymeric and cortical bone specimens

Sean Kohles, J. R. Bowers, A. C. Vailas, R. Vanderby

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

A system was refined for the determination of the bulk ultrasonic wave propagation velocity in small cortical bone specimens. Longitudinal and sheay wave propagations were measured using ceramic, piezoelectric 20 and 5 MHz transclucers, respectively. Results of the pulse transmission technique were refined via the measurement of the system delay time. The precision and accuracy of the system were quantified using small specimens of polyoxymethylene, polystyrene-butadiene, and high-density polyethylene. These polymeric materials had known acoustic properties, similarity of propagation velocities to cortical bone, and minimal sample inhomogeneity. Dependence of longitudinal and transverse specimen dimensions upon propagation times was quantified. To confirm the consistency of longitudinal wave propagation in small cortical bone specimens (2 > 0.997) were maintained between propagation time and distance throughout the size ranges down to less than 0.4 mm. Results for polyoxymethylene, polystyrene-butadiene, and high-density polyethylene were accurate to within 5 percent of reported literature values. Measurement repeatability (precision) improved with an increase in the wave transmission distance (propagating dimension). No statistically significant effect due to the transverse dimension was detected.

Original languageEnglish (US)
Pages (from-to)232-236
Number of pages5
JournalJournal of Biomechanical Engineering
Volume119
Issue number3
StatePublished - Aug 1997
Externally publishedYes

Fingerprint

Ultrasonic velocity
Velocity measurement
Bone
Polystyrenes
Polyethylene
High density polyethylenes
Butadiene
Wave propagation
Ultrasonic propagation
Acoustic properties
Piezoelectric ceramics
Wave transmission
Ceramics
Acoustics
Time delay
Polymers
Ultrasonic Waves
Cortical Bone
delrin
1,3-butadiene

ASJC Scopus subject areas

  • Biomedical Engineering
  • Biophysics

Cite this

Kohles, S., Bowers, J. R., Vailas, A. C., & Vanderby, R. (1997). Ultrasonic wave velocity measurement in small polymeric and cortical bone specimens. Journal of Biomechanical Engineering, 119(3), 232-236.

Ultrasonic wave velocity measurement in small polymeric and cortical bone specimens. / Kohles, Sean; Bowers, J. R.; Vailas, A. C.; Vanderby, R.

In: Journal of Biomechanical Engineering, Vol. 119, No. 3, 08.1997, p. 232-236.

Research output: Contribution to journalArticle

Kohles, S, Bowers, JR, Vailas, AC & Vanderby, R 1997, 'Ultrasonic wave velocity measurement in small polymeric and cortical bone specimens', Journal of Biomechanical Engineering, vol. 119, no. 3, pp. 232-236.
Kohles, Sean ; Bowers, J. R. ; Vailas, A. C. ; Vanderby, R. / Ultrasonic wave velocity measurement in small polymeric and cortical bone specimens. In: Journal of Biomechanical Engineering. 1997 ; Vol. 119, No. 3. pp. 232-236.
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