The acrylic polymer from which Figure 7-30 was obtained is subjected to an alternating stress between 15
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The acrylic polymer from which Figure 7-30 was obtained is subjected to an alternating stress between 15 MPa and 0 MPa. The largest surface cracks initially detected by nondestructive testing are 0.001 mm in length. If the critical fracture toughness of the polymer is 2 MPaÏm, calculate the number of cycles required before failure occurs. Let f = 1.0.
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Crack growth rate (m/cycle) 10-5 10-6 10-7 10-8 0.01 0.1 1.0 Stress-intensity factor range AK(MPa √m)
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Related Book For
The Science And Engineering Of Materials
ISBN: 9781305076761
7th Edition
Authors: Donald R. Askeland, Wendelin J. Wright
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