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麻省理工学院:《polymer engineering》lec 19

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Microfibrillar structures Undeformed spherulite Deforming spherule ∩∩ Fracture Neck forms Material fully drawn Elastic limit Strain E From Samuels, R.J. Structured Polymer Properties. New York: Wiley-Interscience, 1974

From Samuels, R.J. Structured Polymer Properties. New York: Wiley-Interscience, 1974

0 1 st λY λ λ d

ree /E4 415 动→v,心 C4μ-V P E丁 a yield: Wo Ey,t=Y/2 6“6(-△czeT 2△良 +2.33R y See Figure 6.15, Eyring plot for polycarbonate, " in Roylance, D Mechanics of Materials Hoboken NJ: Wiley, 1995

See Figure 6.15, "Eyring plot for polycarbonate," in Roylance, D. Mechanics of Materials. Hoboken NJ: Wiley, 1995

M2Crun ay apla polycarbonate) z(2303亿 zC23)(k,飞14)34ww .8b Cw26o<如 4=z332( 61z 6 z.33C8314)(≤ 33372 =3qk了

·人l axiaL stresses Tresca citol a (w% C>, 3 乙 sTodTtomL sraw emex 【(a-05+(-0+(-51=

Pure shear hear Yeilding Crazing

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