The load-elongation values of individual filaments in a multifilament yarn were studied. The behavior of individual filaments in a bundle is not the same as that of filaments tested individually; therefore, the load-elongation diagram of a multifilament yarn has to be used to arrive at tenacity values of individual filaments in a yam. A technique for obtaining load-elongation values of individual filaments was developed using the breaking steps in a load-elongation diagram of a multifilament yam. Preliminary results are described.
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