This paper reports on the design and development of a multi-axis (up to 6 axes) mechanical tester for spinal research and testing. The developed spine tester allowed true motion to be simulated on a specimen in pure or combined modes. To demonstrate the capability of the new tester, flexural stiffness properties of sheep lumbar motion segments were evaluated together with a non-contact speckle displacement measurement system. The flexural stiffness of the specimens was measured and compared under constrained and non-constrained testing conditions; with relieving of shear forces (non-constrained), it was found that the specimen behaved in a ‘stiffer’ manner.
Multi-axial Spine Biomechanical Testing System with Speckle Displacement Instrumentation
Contributed by the Bioengineering Division for publication in the JOURNAL OF BIOMECHANICAL ENGINEERING. Manuscript received December 13, 200; revised manuscript received March 1, 2002; Associate Editor: C. H. Turner.
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Chung , S. M., Teoh, S. H., Tsai, K. T., and Sin, K. K. (July 30, 2002). "Multi-axial Spine Biomechanical Testing System with Speckle Displacement Instrumentation ." ASME. J Biomech Eng. August 2002; 124(4): 471–477. https://doi.org/10.1115/1.1493803
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