GOST 32281 3-2013 Glass and glass products Determination of the bending strength Test with specimen supported at two points (four points bending)《玻璃和玻璃制品 抗弯强度的测定 两点支撑样品试验 (四点弯曲)》.pdf

1、 , ( )INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION(ISC) 32281.3 2013( N 1288-3:2000) . , ( )EN 1288-3:2000 (MOD) 2014 32281.3 2013 II, - 1.0 92 . - 1.2 2009 . -, . , , , 1 c , 52 3 , , ( 58- 28 2013) : ( 3166) 004 97 ( 3166) 004 97 AM KG MD - RU TJ UZ 4 08 - 2013 1509- 32281.3

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3、000) 2015 01 011 , , . . 32281.1-2013. 32281.1-2013.2 : 111 2001* . 20403 75 . ( 30 IRHD 100 IRHD) 32281.1-2013. . . - - - , 1 , . (), (-) . , , , , .3 :3.1 (bending stress): , . .* 54170 2010. . , ( )Glass and glass products. Determination of the bending strength.Test with specimen supported at two

4、 points (four points bending) 32281.3 2013 23.2 (effective bending stress): , , .3.3 (bending strength): , .3.4 (equivalent bending strength): , .4 : ;E ( ) . - (. 111) 70 103 H/2.Fmax . , , , , . g ;h ;k ( . . 6.2 32281.1 -2013);L ;Ls ;Lb ;Mb ; ;Z ;b , ;beff ;bB ;bG , ;p .5 5.1 , :a) , ;b) ;c) - 2,

5、0 % ;d) (. 2) 50 365 . .5.2 :- , 1 ;- , 0,01 . 32281.3 2013 36 6.1 , ( . 32281.1-2013).6.2 L 1100 5 ; B 360 5 ; h , .6.3 , . , (. 1) .1 , . . 1 , . 24 (. 32281.1-2013). 24 . (. 7.2) .6.4 (. 2). - .7 7.1 . 0,05 . , , . , . . 32281.3 2013 4 , , .1 ; 2 ; 3 ; 4 ; Lb = 200 1 ; Ls = 1000 2 2 7.2 , 2. 3 -

6、(40 10) IRHD ( 20403) . (23 5) C 40 % 70 %. 1 C, - . (2 0,4) /(2) . , Fmax, - , .8 8.1 , . , bB, (1) . , Z = Bh2/6, , 2, :( )max 232s bbB bGL Lk FBh = + . , bG , , (2):234sbGgLh =. 8.2 , , , , k = ks = 1 (. 32281.1-2013).(1)(2) 32281.3 2013 58.3 , , . , . -, , , . , - . k = ke (1) . , y, - (3):3 3 2max434 3 6 2s b s bF L L L Lyh EBh = + + ke (1) - 3, ke y/h (. 32281.1-2013). 3 ke y/h9 :a) ;b) , . , ( );(3) 32281.3 2013 6c) , ;d) , , , , ;e) ;f) :1) , h, , 0,05 ; ( ), ( ) , h, , 0,05 -;2) 1 ;3) , bB , , beqB /2, 0,1 /2;4) , , b