Use of the helium ion microscope in small crack fractography

Field, I.; Kandare, Everson; Tian, Jun; Barter, Simon

doi:10.1016/j.engfailanal.2022.106483

Cited by 2 publications

(3 citation statements)

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“…The HIM operates using similar principles to an SEM and has been shown to produce more detailed and higher-resolution images of fracture surfaces than many of its electron microscope counterparts. 33…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

“…It was utilized for both the quantitative fractography images, as well as general fractographic analysis. The HIM operates using similar principles to an SEM and has been shown to produce more detailed and higher‐resolution images of fracture surfaces than many of its electron microscope counterparts 33 …”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

“…However, in conjunction with these, the helium ion microscope (HIM) has also matured over the past decades 29–32 . The HIM has recently been shown to produce improved images of an AA7050‐T7451 fracture surface compared to a standard scanning electron microscope (SEM) and field emission gun SEM 33 . As such, this technology is considered highly favorable in the context of analyzing fracture surfaces (Table 1).…”

Section: Introductionmentioning

confidence: 99%

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An analysis of fatigue crack features at various crack lengths through mating fracture surface pairs

Field,

Kandare,

Dixon

et al. 2024

Fatigue Fract Eng Mat Struct

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This paper presents a novel high‐resolution direct analysis of mating AA7050‐T7451 fracture surfaces at crack lengths from 0.1 to 1.3 mm (Kmax of 4.51 to 16.39 MPa√m) for the purpose of analyzing the fatigue growth mechanisms. The various fractographic features observed at these crack lengths were then compared to the known accelerative effects of an applied loading sequence that contained underloads at regular intervals. A correlation was found between some of the observed features and the local fatigue crack growth rate. This study provides new insight into the prominent mechanisms that dictate crack growth rate and ultimately should assist with developing crack growth prediction methods that more accurately represent the physics of the fatigue crack growth mechanisms.

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Section: Materials and Experimental Proceduresmentioning

confidence: 99%

Section: Materials and Experimental Proceduresmentioning

confidence: 99%