استاندارد سرامیک ظریف
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استاندارد سرامیک ظریفTRANSCRIPT
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Islamic Republic of Iran
ISIRI
12657 12657 Institute of Standards and Industrial Research of Iran 1st.edition
)
( -
)SCF(-
Fine ceramics (advanced ceramics, advanced technical ceramics)
The fracture toughness of monolithic ceramics at room temperature
by the surface crack in flexure (SCF)- Test method
ICS: 81.060.30
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3 1731
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. W : ( 2) 2/ dYHMQ (2) :
Q= 1+ 1/464( c/a)1/56 M[ = 1/31 0/90( c/a] )
+- 0/45+ 0/98 [ 0/2( + c/a ])-1 ( W/a)2 + 0/5- [ 0/56( + c/a ])-1+ 41( 1- c/a) 42 ( W/a)4
H2= 1-[ 1/22+ 0/21( c/a( ])W/a) [ +0/55 1/50( c/a) 0/57( + c/a) 1/5( ]W/a)2
: ( 3) 1/ SYHSMQ (3)
: H1= 1-[ 0/43+ 0/11( c/a( ] )W/a)
S[ = 1/1+ 0/53( W/a)2])c/a( dY= 1/762 W/a= 0/710 c/a = 0/338 2c= 02101- 6m a= 0501-6 W= 3mm( 301-3m) : sY= 1/292
( 4) csIK xamY sY dY 2-8 :
3/ xam2 csI KYAPWBa (4) :
3/2 csIK xamY
A( = iS oS) /2 A P B W a c
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,CSIK CSIK
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a
1-
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3mm4mm 1- CF
4 = W ,3 = B CF
3 = W ,4 = B C
mm
0/080 1/300 1/300 0/090 1/400 1/400 0/001 1/500 1/500 0/011 1/600 1/600 0/021 1/700 1/700 /031 1/800 1/800 0/041 1/900 1/900 0/051 1/110 1/110 0/061 1/210 1/210 0/071 1/410 1/410 0/081 1/510 1/510 0/091 1/710 1/710 0/002 1/910 1/910 0/012 1/020 1/120 0/022 1/220 1/320 0/032 1/420 1/520 0/042 1/720 1/720 0/052 1/920 1/030 0/062 1/130 1/230 0/072 1/330 1/430 0/082 1/630 1/730 0/092 1/830 1/040 0/003 1/040 1/240