From the present review of the mixed-mode crack growth criteria based on the fracture toughness <$E K sub {roman I c}> (critical J-integral), it appears that this concept is very widely and variously used by different authors. The criteria discussed in this paper are based on the parameters K, <$E delta>, W and J. The most often applied models include the mixed mode I + II described by the stress intensity factor K. The criteria presented in this paper are based on the factors influencing the fatigue crack growth during testing, namely stress, crack tip displacement, or energy dissipation. In the case of mixed-mode cracking, special attention should be paid to the energy approach (application of the J-integral and strain energy density) which seems to be very promising for elastic-plastic materials. Under mixed-mode cracking, two things should be taken into account: the rate and the direction of the fatigue crack growth. Moreover, non-proportional loading, crack closure or overloads strongly influence the fatigue crack growth in the case of mixed-mode cracking.

Індекс рубрикатора НБУВ: Ж306.22 + В251.104

Рубрики:

Міцність матеріалів

Руйнування крихке < Теорія пружності >

Шифр НБУВ: Ж29109 Пошук видання у каталогах НБУВ 

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