Paper Titles
High Strain-Rate Compressive Characteristics of Carbon/Epoxy Laminated Composites in Through-Thickness Direction
p.11
40 Years of "Strain": A Retrospective Review
p.17
High Temperature Behaviour of Materials and Components under Creep Conditions
p.25
Mechanical Design Analysis and Test in Support of the Market Introduction of a New Vehicle
p.37
Ultrasonic Cutting with High-Gain Blades
p.45
On Non-Ideal Simple Portal Frame Structural Model: Experimental Results under a Non-Ideal Excitation
p.51
Diagnosis of Noise Radiation Mechanisms from a Wind Turbine Generator
p.59
Novel Health Monitoring Procedure for Reinforced Concrete Slabs
p.65
The Design and Analysis of a New Type of Vibration Structure
p.71

Ultrasonic Cutting with High-Gain Blades

Article Preview

Abstract:

The design of high power ultrasonic cutting devices is based on tuning a blade to a longitudinal mode of vibration at a low ultrasonic frequency, usually in the range 20-100 kHz. To achieve the required cutting amplitude, gain is designed into the blade via profiling. It is expected that the use of higher-gain blades could enable longitudinal-mode guillotine-type cutting of a range of materials traditionally difficult to cut using this technology. Using a conventional high-gain blade, a feasibility study of ultrasonic cutting of bone is conducted using compact tension specimens of bovine femur. Finite element (FE) models are created, based on the assumption that the ultrasonic blade causes a crack to propagate in a controlled mode 1 opening. The models are compared with the experimental data collected from ultrasonic bone cutting experiments. Although the proposed cutting mechanism is supported by the data, the blade gain is insufficient to enable through cutting of long bone or other difficult to cut materials. Consequently, the paper examines the relationship between gain, profile, stress and nodal position for a range of ultrasonic cutting blades with increased gain.

You might also be interested in these eBooks
Advances in Experimental Mechanics View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 1-2)

Pages:

45-50

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.1-2.45

Citation:

Cite this paper

Online since:

September 2004

Authors:

Alan MacBeath, Andrea Cardoni, Lorna Smith, Margaret Lucas

Keywords:

Bone, Fracture, Horn Design, Ultrasonic Cutting, Wood

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2004 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] A. Cardoni, M. Lucas: Enhanced Vibration Performance of Ultrasonic Block Horns, Ultrasonics, Vol. 40, pp.365-369 (2002).

DOI: 10.1016/s0041-624x(02)00123-3

Google Scholar

[2] J.Y. Giraud, S. Villemin, R. Daramana, J. Ph. Cahuzac, A. Autefage and J.P. Morucci.: Bone Cutting, Review Article, Clin. Phys. Physiol. Meas., Vol. 12, No 1, pp.1-19 (1991).

DOI: 10.1088/0143-0815/12/1/001

Google Scholar

[3] D. Sun, Zhaoying Y. Zhou, Yunhui H. Liu, and Weizai Z. Shen: Development and Application of Ultrasonic Surgical Instruments, IEEE Transactions on Biomedical Engineering, Vol. 44, No. 6 (1997).

Google Scholar

[4] A. Cardoni, M. Lucas: Strategies for Reducing Stress in Ultrasonic Cutting Systems, BSSM International Conference on Advances in Experimental Mechanics, pp.101-104 (2002).

Google Scholar

[5] W. J. Bonfield: Advances in the Fracture Mechanics of Cortical Bone, Biomechanics, Vol. 20, No. 11/12, pp.1071-1081 (1987).

DOI: 10.1016/0021-9290(87)90025-x

Google Scholar

[6] J. Behiri, W. Bonfield: Orientation Dependence of the Fracture Mechanics of Cortical Bone, Journal of Biomechanics, Vol. 22, No. 8/9, pp.863-872 (1989).

DOI: 10.1016/0021-9290(89)90070-5

Google Scholar

[7] L. Smith, M. Lucas: A Fracture Model of Ultrasonically Assisted Osteotomy, SEM 9th International Congress on Experimental Mechanics, Florida (USA), pp.571-574 (2000).

Google Scholar

[8] H. Pang: Linear Elastic Fracture Mechanics Benchmarks: 2D Finite Element Test Cases, Engineering Fracture Mechanics, Vol. 44, No. 5, pp.741-751 (1993).

DOI: 10.1016/0013-7944(93)90203-5

Google Scholar

[9] L.G. Merkulov: Theory of Ultrasonic Concentrators, Soviet Physical Acoustics, Vol. 3, pp.230-238 (1957).

Google Scholar

[10] A. Cardoni, M. Lucas, M.P. Cartmell, F.C.N. Lim: Nonlinear and Parametric Vibrations in Ultrasonic Cutting Systems, 5th Int. Conf. on Modern Practice in Stress and Vibration Analysis, Glasgow, pp.397-404 (2003).

DOI: 10.4028/www.scientific.net/msf.440-441.397

Google Scholar