Double torsion testing of prescription l
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P. J. McAuliffe; R. W. Truss
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Article
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1995
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Springer
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English
β 505 KB
In previous work, a modified double torsion test was developed to measure the fracture toughness of polymeric ophthalmic lenses with parallel surfaces. The method used production lenses so that the toughness of the manufactured articles could be measured directly. This method has now been extended t