Problem 5. Figure P5 shows the load-displacement records of a compact tension specimen of width W = 50 mm and thickness B = 10 mm containing three cracks of length a = 24, 25, 26 mm. The specimen with a = 25 mm fails at a displacement of u = 2 mm. Determine the value of Jusing both the multiple-specimen method and the single-specimen method. P, u/2 P, u/2 a W b P(kN) a=24mm 54 25mm 50 46 26mm Figure P5 2 u(mm)

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Problem 5. Figure P5 shows the load-displacement records of a compact tension specimen of
width W = 50 mm and thickness B = 10 mm containing three cracks of length a = 24, 25, 26
mm. The specimen with a = 25 mm fails at a displacement of u = 2 mm. Determine the value
of Jusing both the multiple-specimen method and the single-specimen method.
P, u/2
P, u/2
a
W
b
P(kN)
a=24mm
54
25mm
50
46
26mm
Figure P5
2
u(mm)
Transcribed Image Text:Problem 5. Figure P5 shows the load-displacement records of a compact tension specimen of width W = 50 mm and thickness B = 10 mm containing three cracks of length a = 24, 25, 26 mm. The specimen with a = 25 mm fails at a displacement of u = 2 mm. Determine the value of Jusing both the multiple-specimen method and the single-specimen method. P, u/2 P, u/2 a W b P(kN) a=24mm 54 25mm 50 46 26mm Figure P5 2 u(mm)
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