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Loading Rate¡ªFor conventional (quasi-static) tests, the specimen shall be loaded such that the rate of increase of stress-intensity factor is between 0.55 and 2.75 MPa¡Ìm/s (30 and 150 ksi¡Ìin./min) during the initial elastic displacement.

ÖеÄ0.55-2.75 MPa¡Ìm/s  Ôõôת»»³É mm/s µÄµ¥Î»¡£

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ÒýÓûØÌû:
10Â¥: Originally posted by sunhua123AC at 2014-08-21 14:24:14
kic ¹«Ê½ÈçÏÂA 4.1: K=P/B*W^0.5*f(a/W)
A 4.2: f(a/W)=(2+a/W)*/(1-a/W)^1.5
ÏȲâµÃP=41.875KN  B=37.74mm  W =76.13mm,  f(a/W)=9.09,
Ëã³öÀ´µÄKICÖµÔõôºÍ»úÆ÷ËãµÄ²»Ò»Ñù°¡£¬...

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12Â¥2014-08-21 14:30:13
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http://www.docin.com/p-125620892.html
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2Â¥2014-08-21 11:34:38
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1Mpa
= 1000000 N/m2
= 1000 KN/m2
Äú¿ÉÒÔת»»³Éǧţ/S
3Â¥2014-08-21 11:38:27
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sunhua123AC

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ÒýÓûØÌû:
3Â¥: Originally posted by С·¶bairoe at 2014-08-21 11:38:27
1Mpa
= 1000000 N/m2
= 1000 KN/m2
Äú¿ÉÒÔת»»³Éǧţ/S

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