Elongation-recovery

Therefore the ultimate elongational recovery after cessation of steady flow with elongational rate ic is ... 

More recently, Robbins and Crawford [8] provided additional evidence that the cortex and not the cuticle is responsible for the tensile properties of human hair and that severe damage can occur in the cuticle that cannot be detected by tensile property evaluation. This work involved selective oxidation of the cuticle with m-diperisophthalic acid. This treatment produces extensive cuticular damage that is detectable microscopically, but this damage could not be detected by either wet or dry tensile property evaluation. These results are consistent with the fact that wet extension of hair fibers to 30% can damage the cuticle [9] yet on relaxation in water, tensile recovery occurs producing virtually identical elongation-recovery curves in a before and after type of evaluation. This basic procedure is commonly used throughout the industry. 

Epoxy resin films were subject to various successive loading-unloading cycles including elongation, recovery, annealing and stress relaxation to study the reversibility of the orientation during relaxation processes (197). 

Fig. 35a and b. FTIR polarization spectra taken alternately with light polarized parallel a and perpendicular b to the stretching direction during an elongation-recovery cycle of a sulfur-crosslinked natural rubber at 300 K... 

Figure 2-45. Experimental sequence for tlie observation of the director reorientation during the rheo-optical elongation-recovery cycle.

Figure 2-47. Stress-strain diagram of an elongation-recovery cycle of the reference elastomer at 27 "C.

Figure 2-48. Order parameter/ strain-plot for the v(C=N) absorption corresponding to the elongation-recovery cycle shown in Figure 2-47.

Figure 2-51. Reversible dichroic behavior of the f(C=N) absorption of the LSCE during an elongation-recovery cycle to 45"/p strain at 2T-C.

Figure 28 Rheo-optical elongation recovery experiments of PDMS/PC (50/50% (w/w) and 80/20% (w/w)) block copolymers at 22 °C. (a, b) Stress-strain diagrams and (c, d) orientation function/strain diagrams of the PDMS and PC segments.

Figure 29 Rheo-optical elongation recovery experiment of a PDMS/PC (80/20%, w/w) block copolymer at -55 °C. (a) Stress-strain diagram ...

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