## Science and Technology of Fibers and Related Materials: Proceedings of the Fiber Society 50th Anniversary Technical Conference Held in Princeton, New Jersey, August 19-23, 1990 |

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Page 69

Isothermal thermal

measurement of change in length of filaments when they were heated rapidly to ,

and held at , near melting temperatures while being subjected to a constant axial

force .

Isothermal thermal

**deformation**analysis ( ITDA ) experiment involved themeasurement of change in length of filaments when they were heated rapidly to ,

and held at , near melting temperatures while being subjected to a constant axial

force .

Page 326

That is , the

values taken at P by the functions defining the initial and final configurations of

the body together with many of their derivatives . In the simplest class of problems

...

That is , the

**deformation**energy density at a material point P depends only onvalues taken at P by the functions defining the initial and final configurations of

the body together with many of their derivatives . In the simplest class of problems

...

Page 333

Collapsing Shear If one uses the logarithmic strain tensor , an arbitrary

dilation , where pure shear is the

invariant .

Collapsing Shear If one uses the logarithmic strain tensor , an arbitrary

**deformation**is quite naturally split into the sum of a pure shear and a puredilation , where pure shear is the

**deformation**which leaves the element of areainvariant .

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### Contents

M | 33 |

Strain Rate Effects in Ultrastrong Polyethylene Fibers and Composites | 45 |

Morphology and Near Tm Behavior of High Performance Ultrahigh | 67 |

Copyright | |

30 other sections not shown

### Common terms and phrases

amorphous analysis angle appearance Applied behavior bending blend body braided break calculated carpet cellulose compared composite compression constant cotton crystalline crystallization curve decrease deformation density dependence described determined developed diameter direction discussed distance distribution draw effect elastic energy experimental extension fabric factor failure fiber Figure filament finish force frictional function geometry given heat higher improved increase indicated initial length liquid load lower m/min material measured mechanical method modulus nylon observed obtained occurs orientation parameter polyester polymer present pressure problem produced properties range ratio reduced relative resistance sample scanning shape shear shown in Figure shows solution specimen speed spinning spun strain strength stress structure surface Table temperature tenacity tensile tension Text treated treatment twist unit untreated values variability yarn