高張力鋼點銲銲點的三次元疲勞龜裂進展觀察

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高張力鋼點銲銲點的三次元疲勞龜裂進展觀察. References : 種子島 亮太 * , 曙 紘之 , 加藤昌彥 , 宮垣亞希 , 菅田淳 , “3-Department Observation of Fatigue Crack Propagation on Spot Welded Joints Using High Strength Steel” , The Japan society of Mechanical Engineers, Vol.10-0131, pp.1317-1324, 2010. 指導教授:郭聰源 教授 - PowerPoint PPT Presentation

Transcript of 高張力鋼點銲銲點的三次元疲勞龜裂進展觀察

101/11/30

1References: *, ,,,, 3-Department Observation of Fatigue Crack Propagation on Spot Welded Joints Using High Strength Steel , The Japan society of Mechanical Engineers, Vol.10-0131, pp.1317-1324, 2010.

24000~5000

3(1/3)MaterialCSiMnPSFeSPFC590Y0.060.631.610.0090.004Bal.1 .SPFC590Y

SPFC590Y(t=0.8mm)

490MPa

590MPa780MPa

1GPa

44 (2/3)(=4.8mm)

1.

5(3/3)

(R)(N)0.051072.6

2. *:(1/7)

3. 1.7

4. HAZ733HAZ

(2/7) 480MPa

5. ():(a) (b) ():(a) (c) (d)

6.8(3/7)9

7.(4/7) (II):(I)(b) (III):(c) (IV):(d)

8.10 (I):(5/7)1:+2:0.2mm2253 =100MPaNf(=12343 cycles)9

9.(a)(b)11

(a)(b)(6/7) N/Nf60%0.2 mm

N/Nf50%

N/Nf

10.3D12*N*Nf100MPa

(7/7)

11.13 30MPa

14Thanks for your attention 15