Variation of Young's modulus with the test specimen's aspect ratio
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Updated: Nov 8, 2026

Extracting the Young's Modulus of Native Murine Pulmonary Basement Membranes from Atomic Force Microscopy Derived Force Maps
Published on: January 31, 2025
R A Rodford1, M Braden, R L Clarke
1Department of Biomaterials in Relation to Dentistry, London Hospital Medical College, UK.
Abstract:
A study of Young's modulus in flexure of a number of methacrylate polymers indicated that the results were dependent on the test specimen thickness. The Young's modulus calculated from simple bending theory decreased with increased specimen thickness. This effect could not be accounted for either by the usual corrections for shear or corrections for the effect of the width/length ratio. It transpires that the effects noted experimentally are due to the combined effects of shear and the width/length ratio.
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