Tensile changes

Tensile change + 30%, elongation change -50%, hardness change + 15 points. 

Figure 2. IR and tensile changes PmPiPA photodegradation. Xenon arc Weather-Ometer stress-strain data 44 tex, 2 ply yam Nomex. A A> vacuum irradiated 0, air irradiated. Initial elmga-Hon at break, 30%, Initial tensile strength, 9,0 X 10" g cmr, IR data lOfi films, Trans, + IRS, x(dp = 0.55/ij.

Figure 4. IR and tensile changes PET photooxidation. 21/1 Mylar film, irradiated Xenon arc Weather-Ometer. Initial elongation at break, 190%. Initial tensile strength, 7.3 X 1(P g cm. dp = depth of penetration for IRS ir spectra.

This equation is based on a model assuming that the work energy put into the system is either stored as internal strain energy or is used to form a new surface area through debonding. Based on these assumptions, several functional relationships were developed to characterize energy released, uniaxial tensile, change in surface... 

Tensile Changes. Although filaments drawn under high shear conditions (low temperature, high draw speed) oxidize rapidly on exposure to near UV irradiation, it is of great practical importance to study also the changes in tensile properties in these filaments. Embrittlement is in... 

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