Fatigue crack propagation work coefficient—a material constant giving degree of resistance to fatigue crack growth

Iino, Y.

doi:10.1016/0013-7944(79)90120-6

Cited by 29 publications

(14 citation statements)

References 14 publications

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“…For as-received copper, the isotropic hardening is negligible and we ignore it. Based on the relations (8) to (12), the corresponding parameters were calculated for 21 cycles until the steady state of the hysteresis loops. Based on the relations (8) to (12), the corresponding parameters were calculated for 21 cycles until the steady state of the hysteresis loops.…”

Section: Cyclic Strain-controlled Testsmentioning

confidence: 99%

Study of hardening and cyclic plastic behaviour around the crack tip of C(T) specimen made by as‐received and annealed copper

Hosseini

Seifi

2018

Fatigue Fract Eng Mat Struct

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The purpose of this research is determining experimentally the characteristics of tension and cyclic plastic behaviours of as‐received and annealed coppers and studying distribution of stress/strain field near the crack tip. Samples made by pure copper were annealed at 420°C for 40 minutes in electric furnace. To determine the properties of the cyclic plastic behaviour, proper tests with symmetric strain‐controlled conditions were performed on standard samples. Chaboche nonlinear hardening model was used to determine the cyclic plastic behaviour of both materials. According to results, annealing process creates isotropic hardening in the copper and also changes its initial kinematic hardening behaviour. Effects of the annealing and hardening on the variations of the stresses and strains around the crack tip were investigated. Also, ratcheting and mean stress relaxations versus number of cycles, inside the plastic region, were studied.

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Section: Cyclic Strain-controlled Testsmentioning

confidence: 99%

Study of hardening and cyclic plastic behaviour around the crack tip of C(T) specimen made by as‐received and annealed copper

Hosseini

Seifi

2018

Fatigue Fract Eng Mat Struct

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“…The effectiveness of the Paris law and its extensive use in engineering practice does not eliminate the problem of searching for new kinetic relations for cracks that take into account the physics of the processes accompanying changes in the material structure at the crack tip. Many authors [1][2][3] proposed an alternative function relating the crack rate to such parameters as J-integral, plastic deformation zone size, the value of dissipated energy, etc. The use of the energy approach in the description of fatigue crack propagation originated in [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of energy dissipation at a fatigue crack tip in metals

Iziumova¹,

Vshivkov²,

Prokhorov³

et al. 2016

AIP Conference Proceedings

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Abstract. The study of energy dissipation under fatigue crack provides a way for monitoring and predicting the rate of fatigue crack propagation. Two independent techniques are proposed to determine heat source evolution in metals caused by fatigue crack propagation. The techniques are based on temperature data and data obtained with an original heat flow detector. The dissipated energy evolution is studied under fatigue crack propagation. Two regimes of energy dissipation at the tip of a crack propagating within the Paris regime are described.

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“…Considerable attention has been paid for description of exponential regime based on the other characteristics of the process, distinct from the stress intensity factor which doesn't take into consideration the process of plastic flow at the crack tip in metals. In 1979, the relation relating the rate of fatigue crack and characteristic size of plastic deformation zone was proposed [3] da dN = C∆CTOD.…”

Section: Introductionmentioning

confidence: 99%

Development of the measurement system for determination of dissipation rate near the fatigue crack tip

Prokhorov¹,

Vshivkov²,

Iziumova³

et al. 2014

Proceedings of the 2014 International Conference on Quantitative InfraRed Thermography

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The heat dissipation process caused by propagating fatigue crack in AISE 304 steel was studied. To calibrate the heat dissipation data and to implement the precise measurement of heat flow the infrared camera was combined with original measurement systems based on Pelteir element and potential drop technique. The developed experimental setup allows us to monitor the heat flow, heat sources distribution and crack length during the experiment. As a result of the study we have shown the linear dependence between rate of fatigue crack growth and energy dissipation rate at the fatigue crack tip.

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Fatigue crack propagation work coefficient—a material constant giving degree of resistance to fatigue crack growth

Cited by 29 publications

References 14 publications

Study of hardening and cyclic plastic behaviour around the crack tip of C(T) specimen made by as‐received and annealed copper

Study of hardening and cyclic plastic behaviour around the crack tip of C(T) specimen made by as‐received and annealed copper

Peculiarities of energy dissipation at a fatigue crack tip in metals

Development of the measurement system for determination of dissipation rate near the fatigue crack tip

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