Abstract
An account is given of the measurement of the transverse deformation of fibres under various loads acting normal to the fibre longitudinal axis by a technique in which fibres are interleaved between glass plates in a vertical stack. Graphs of transverse load against compression are plotted for nylon, acrylic, and viscose rayon fibres under both air-dry and wet conditions. An expression for the transverse deformation in terms of the applied load is proposed and used to calculate the lateral-compression moduli of the various fibres. The results show that, laterally, nylon fibres in both wet and dry states have the highest modulus and that acrylic fibres appear to be least affected by immersion in water. Viscose rayon fibres are most affected by water and experience a reduction in modulus by a factor of about 20.
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