Applying fracture mechanics to fatigue strength determination – Some basic considerations

Damage tolerant design of additively manufactured metallic components subjected to cyclic loading: State of the art and challenges

“…cf. also [399]. The principle of the cyclic R-curve analysis was first introduced by Tanaka and Akinawa [401], with more recent examples are found in [402][403][404][405], see also Madia et al [58] and Zerbst et al [60].…”

Experimental strain‐based vibration control to obtain the fatigue strain limit by the staircase method

“…In order to prevent uncertainty of the test system, the following arrangement has been adopted: (1) All tests were performed at a constant room temperature of 25 C. (2) The connection between one edge of the test specimen was ensured by clamp-on accurate surfaces [20] with constant pre-tightened at 25NÁm.…”

“…Fatigue limit, usually expressed as a stress amplitude, is defined as a fatigue strength below which the component has an infinite fatigue life, [1] and it can be used as a reference value to obtain an estimation of the fatigue state. In practice, the limit value is hard to be determined accurately, and normally it is considered as the fatigue strength which displays at typically 10 6 − 10 7 load cycles [2–5] . Therefore, the fatigue limit is located between high cycle fatigue and unlimited endurance domain, and it needs to be identified by the experimental fatigue test.…”

“…In practice, the limit value is hard to be determined accurately, and normally it is considered as the fatigue strength which displays at typically 10 6 À 10 7 load cycles. [2][3][4][5] Therefore, the fatigue limit is located between high cycle fatigue and unlimited endurance domain, and it needs to be identified by the experimental fatigue test.…”

Rapid evaluation of notch stress intensity factors using the peak stress method with 3D tetrahedral finite element models: Comparison of commercial codes

“…In the context of the fatigue design of welded components, design codes and recommendations 1,2 suggest several methods, namely the nominal stress, 3,4 the structural hot‐spot stress, 3–7 the notch stress 3,4,8–17 and the Linear Elastic Fracture Mechanics (LEFM) 3,13,15,17–20 approaches. Additionally, criteria based on local parameters, such as stress, strain or strain energy, proved to be reliable for fatigue design of welded components, especially when complex welded details or load conditions are considered 10,21–23 .…”