166 



THE BELL SYSTEM TECHNICAL JOURNAL, JANUARY 1952 



10'°X2.0 



TEMPERATURE IN DEGREES CENTIGRADE 

 50 40 30 20 10 



Z^ 



V 



6-6 NYLON 



AU - 0.75 KILOCALORIES 



PER MOLE 



c^ 



/ 



POLYETHYLENE 



AU FOR STRAIGHT PART = 



2.72 KILOCALORIES PER MOLE 



3.0 



3.8 



3.9 

 XlO-3 



1 3.2 3.3 3.4 3.5 3.6 3.7 



INVERSE OF ABSOLUTE TEMPERATURE 



Fig. 39 — Shear elasticity of polyethylene and nylon 6-6 plotted as a function 

 of temperature and frequency. 



10 20 30 40 50 



TEMPERATURE IN DEGREES CENTIGRADE 



Fig. 40 — Value of Lame X elastic constant for poh-ethylene and nylon 6-6 

 plotted as a function of frequencj^ and temperature. 



