The effect of manufacturing processes on the fatigue lifetime of aeronautical bolts

Ifergane, S.; Eliaz, Noam; Stern, Noah; Kogan, E.; Shemesh, G.; Sheinkopf, H.; Eliezer, D.

doi:10.1016/s1350-6307(00)00013-3

Cited by 31 publications

(11 citation statements)

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“…The exposure of grain boundaries to the outer surface of the screw indicates that the threads were fabricated by machining and not by plastic forming. This could have made them susceptible to failures by mechanisms such as SCC and fatigue [120]. Surprisingly, FDA guidelines do not include a requirement for manufacturing of threads of bone screws by cold forming, although this is a common knowledge and requirement for critical aircraft screws, for example.…”

Section: Biocompatibilitymentioning

confidence: 99%

Corrosion of Metallic Biomaterials: A Review

2019

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Metallic biomaterials are used in medical devices in humans more than any other family of materials. The corrosion resistance of an implant material affects its functionality and durability and is a prime factor governing biocompatibility. The fundamental paradigm of metallic biomaterials, except biodegradable metals, has been “the more corrosion resistant, the more biocompatible.” The body environment is harsh and raises several challenges with respect to corrosion control. In this invited review paper, the body environment is analysed in detail and the possible effects of the corrosion of different biomaterials on biocompatibility are discussed. Then, the kinetics of corrosion, passivity, its breakdown and regeneration in vivo are conferred. Next, the mostly used metallic biomaterials and their corrosion performance are reviewed. These biomaterials include stainless steels, cobalt-chromium alloys, titanium and its alloys, Nitinol shape memory alloy, dental amalgams, gold, metallic glasses and biodegradable metals. Then, the principles of implant failure, retrieval and failure analysis are highlighted, followed by description of the most common corrosion processes in vivo. Finally, approaches to control the corrosion of metallic biomaterials are highlighted.

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Section: Biocompatibilitymentioning

confidence: 99%

Corrosion of Metallic Biomaterials: A Review

2019

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“…For metric (bolt) threads ( Fig. 4), size effects, the manufacturing process and even the manufacturing sequence play a major role, see [5] for the latter two influencing parameters. Cut/machined threads are the worst performers, while rolled threads behave much better.…”

Section: Prestressing Steelsmentioning

confidence: 99%

Revision of EN 1993‐1‐11 – fatigue design rules for tension components

Annan¹,

Bechtold

Friedrich

et al. 2019

Steel Construction

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“…not with a metric (bolt) thread. For metric (bolt) threads, size effects, the manufacturing process and even the manufacturing sequence play a major role, see (3) for the latter two influencing parameters: Cut/machined threads are the worst performers, while rolled threads behave much better. As compression residual stresses introduced during thread rolling increase fatigue resistance, the fatigue strength for threads rolled after heat treatment is higher than that for bolts rolled before heat treatment in which these residual stresses are relieved again as a result of the heat treatment.…”

Section: Preliminary Remarksmentioning

confidence: 99%