CAJ | 학술논문

利用扫描电子显微镜(SEM)观察了短碳纤维增强聚芳醚酮复合材料(SCF/PEK-C)在拉伸及冲击破坏条件下的断面形态，利用材料力学试验机测定SCF/PEK-C的应力-应变曲线，进而讨论了短碳纤维／聚芳醚酮复合材料的断裂机理。结果表明：此复合材料的微观破坏机理具有多样性。
이용소묘전자현미경(SEM)관찰료단탄섬유증강취방미동복합재료(SCF/PEK-C)재랍신급충격파배조건하적단면형태，이용재료역학시험궤측정SCF/PEK-C적응력-응변곡선，진이토론료단탄섬유／취방미동복합재료적단렬궤리。결과표명：차복합재료적미관파배궤리구유다양성。
The author considers initial value problem of ording differential equation in the following u′=f(t， .If f(t, u) on u satisfies strong Lip-Condition |f(t, u)-f(t, v)|≤g(t)|u-v| u) u|=0= u0 were non-negative function g(t) satisfies g(t)dt and |g′(t)|dt ∫0 ∫0 un+1--un-1 bound. Then difference scheme{ 2τ =f (tn, un), n = 1, 2, … are( u0=u0, u′=u0+τf (0, u0) possess long time stability and convergence.