KS M ISO 13586-2012 Plastics-Determination of fracture toughness(GIC and KIC)-Linear elastic fracture mechanics(LEFM) approach《塑料 断裂韧性(GIC与KIC)的测定 线性弹性破坏力学(LEFM)接近法》.pdf

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KS M ISO 13586-2012 Plastics-Determination of fracture toughness(GIC and KIC)-Linear elastic fracture mechanics(LEFM) approach《塑料 断裂韧性(GIC与KIC)的测定 线性弹性破坏力学(LEFM)接近法》.pdf_第1页
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1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS M ISO 13586 (GIC KIC) (LEFM) KS M ISO 13586:2012 2012 12 24 http:/www.kats.go.krKS M ISO 13586:2012 : ( ) ( ) SREAP ( ) : (http:/www.standard.go.kr) : :2007 10 30 :2012 12 24 2012-0749 : : ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS M ISO 13586:201

2、2 i ii 1 1 2 1 3 .1 4 4 4.1 4 4.2 .4 4.3 .4 4.4 .4 5 4 5.1 4 5.2 5 5.3 (loading rigs)5 5.4 5 5.5 5 5.6 , 5 5.7 6 6 .6 6.1 FQ .6 6.2 GQ6 6.3 KQ7 6.4 r 7 6.5 .8 7 8 8 .9 A( ) .14 B( ) 16 21 KS M ISO 13586:2012 ii 2000 1 ISO 13586, Plastics Determination of fracture toughness(GICand KIC) Linear elastic

3、 fracture mechanics(LEFM) approach 2003 Amendment 1 , . KS M ISO 13586:2012 (GIC KIC) (LEFM) Plastics Determination of fracture toughness(GICand KIC)Linear elastic fracture mechanics(LEFM) approach 1 ( I) . , , 3 (compact-specimen) . . , , (6.4 ) . , . 2 . . ( ) . KS M ISO 291, KS M ISO 527 1, 1: KS

4、 M ISO 604, KS M ISO 5893: 2005, , , ( ) ISO 2818: 1994, Plastics Preparation of test specimens by machining 3 . KS M ISO 13586:2012 2 3.1 G A , Us Uext AUAUGSext= (1) J/m2 . 3.2 GIC , G J/m2 . 3.3 K r , r (r) 2r =)(lim0rKr r2 (2) mPa . , . 3.4 KIC mPa . KIC . EKG /2ICIC= (3) E : ( ) 2t1 =EE (4) Et:

5、 (KS M ISO 527 1 ) : (Poisson) (KS M ISO 527 1 ) KS M ISO 13586:2012 3 3.5 sa5.4 m . 3.6 S - 0dd=ssFS N/m . 3.7 FQ N (6.1 ). 3.8 WB J . WB - . 3.9 a 4.3 m . 3 , . , , ( 1 3 ). a w ( a/w). 3.10 1dd)/(=SSwa (5) S : ( a/w) : (3.9 ) (a/w) A . KS M ISO 13586:2012 4 3.11 f f(a/w) A . 3.12 r (6.4 ). 4 4.1

6、3 ( , , SENB) (CT) 1 3 . h w 2h . a 0.45a/w0.55 . 4.2 ISO 2818 . , . 4.3 a), b) c) . a) , ( , ). 4 . b) . . 4 . c) . . 4.4 . KS M ISO 291 . 5 5.1 KS M ISO 5893 . KS M ISO 13586:2012 5 . . 1 % . 5.2 . . 2 % . (1 % ) . 5.3 (loading rigs) 2 3 (SENB) . ( w/2) . L ( 2 ). , . , (5.2 ). 5.4 sa WB S , , (co

7、mpliance) . . - ( 4 ) 5 6 , . 3 . , . . . , . , ( 4 ). . . sa sj . , - . WB S ( 7 ). sj sa 20 % . 5.5 , , . 5.6 , h w 0.02 mm . a . . KS M ISO 13586:2012 6 5 . , . 10 % . 10 % , . , . 5.7 23 10 mm/min . , . 0.1 m/s 10 ms . 3 . 23 (6.4 ) . , KIC , . . 6 6.1 FQ , - . FQ . , , , . LEFM , . , . S 7 . 5

8、% , . - 2 , Fmax FQ ( ). F5 , F5 FQ . 7 , LEFM . 1.15maxFF 10 % , . 6.2 GQ FQ a , WB . )/(BQwawhWG= (6) WB: h : w : KS M ISO 13586:2012 7 (a/w) : a A . (a/w) A . 6.3 KQ a , FQ KQ . whFwafKQQ)/(= (7) FQ: h : w : f(a/w) : a A f . f(a/w) A . 6.4 r r , . . h 2.5r a 2.5r (w a) 2.5r , . h , w a . w a , ,

9、. , h w . w/h 4 . GQ KQ r . 2yQ22hSGfr = (8) 2y2QKr = (9) h : f : : KS M ISO 13586:2012 8 S : (5.4 ) y: (uniaxial) (KS M ISO 527 1 ) , (KS M ISO 604 ) 0.7 , , . GQ GIC KQ KIC6.5 E S GIC KIC . hSfE2stiff2= (10) IC2ICfractGKE = (11) E : (3.4 ) f : ( A ) : ( A ) h : S : KIC: GIC: Estiff Efract . 15 % ,

10、 KIC GIC . 7 1 9 . SENB , . . 5 . KIC 5 %, GIC 12 % . KS M ISO 13586:2012 9 1 KIC GIC KIC( ) mMPa GIC( ) kJ/m2EstiffEfract1 2 3 4 5 6 7 8 9 SENB SENB SENB SENB SENB CT SENB SENB SENB RS RT RT RS RT RT RS RT RT RT RT 4.140.17 4.030.10 3.790.08 3.840.17 4.210.26 4.100.35 3.820.21 4.460.13 3.990.10 3.9

11、0.3 4.100.22 4.760.98 3.920.15 4.010.17 4.480.70 4.820.73 5.140.67 4.200.41 5.820.24 4.800.46 4.70.8 6.400.8b3.65 4.14 2.24a3.32 3.64 3.30 3.63 3.57 3.22 3.65 4.14 3.58 3.33 3.71 3.28 3.32 3.42 3.32 3.21 2.63b 4.030.19 4.820.56 a b RS RT 8 . a) b) c) (SENB CT) d) e) f) - g) h) , Fmax/F5 (6.1 ) i) j)

12、 k) GIC KICl) Estiff Efract m) n) KS M ISO 13586:2012 10 w l l 4.2 w h w/4 h w/2 a 0.45 wa0.55 w 1 4.1 3 (SENB) L L 4w0.1w R w/8 R w/2 h 1 2 2 3 (SENB) 5.3 a w w 1 a 0.5 l 0.5 lh L 2 2 w 2R KS M ISO 13586:2012 11 w W W 1.25 w0.01 w l1 l1 1.2 w0.01 w l2 l2 0.55 w0.000 5 w 0.005 w R R 0.125 w0.005 w h

13、 0.4 w h 0.6 w a 0.45 wa0.55 w ( , .) 3 4.1 (CT) 4 (5.4 ) , s, FKS M ISO 13586:2012 12 5 (5.4 ) 6 (5.4 ) KS M ISO 13586:2012 13 FQ WB 7 - ( . 5.4 ) , s , FFQ F5S110.95SFmaxWBKS M ISO 13586:2012 14 A ( ) A.1 (SENB) f : L/w 4 ( 6 ) f L a/w a : w : . 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.

14、55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 2.50 3.39 4.07 4.70 5.36 6.09 6.93 7.93 9.14 10.65 12.57 15.09 18.51 23.40 30.84 43.21 66.76 123.30 351.62 1.502 0.857 0.641 0.526 0.449 0.391 0.345 0.307 0.275 0.246 0.220 0.195 0.170 0.145 0.120 0.096 0.072 0.049 0.025 (SENB) : 0 1 2/322/1)1)(21()7.293.31

15、5.2)(1(99.16+=f /dd64.18AA+= )672.25815.84952.112616.79717.339.8()1(16543222+=A)36.12826.339856.338232.159717.33()1(16dd43222+=A)672.25815.84952.112616.79717.339.8()1(2)1(216543232+ KS M ISO 13586:2012 15 A.2 (CT) f ( 7 ) f a/w a : w : . 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 4.92 5.

16、62 6.39 7.28 8.34 9.66 11.36 13.65 16.86 21.55 28.86 0.199 0.208 0.213 0.213 0.208 0.199 0.186 0.170 0.152 0.133 0.112 (CT) : 0.2 0.8 )6.572.1432.1364.4886.0()1()2(4322/3+=fABA2)1(+=A (1.911 8 19.118 2.512 2 2 23.226 3 20.54 4) B (19.118 5.024 4 69.678 2 82.16 3)(1 ) KS M ISO 13586:2012 16 B ( ) B.1 . , . , . , . . , , LEFM . B.2 . . . .

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