Non-destructive testing and fracture mechanics: A short discussion

Abstract

A short discussion is provided on the relationship between non-destructive testing and fracture mechanics. The\ud basic tasks behind this are to guarantee the safety of a component at a potential hazard loading event, to specify inspection\ud intervals or, alternatively, of demands on non-destructive testing for a fixed inspection regime, to plan accompanying\ud actions for cases of temporary continued operation of structures in which cracks have been detected, and, finally, fatigue\ud strength considerations which take into account initial defects

Elastic immersive wave experimentation

“…Recomputing the full wavefield while performing only local wavefield simulations on a sub-domain that encloses the model alterations would significantly reduce the required computational resources, so this has been an active area of research in exploration geophysics and seismology (e.g., Lin et al, 2019;Jaimes-Osorio et al, 2021;Aaker et al, 2020;Pienkowska et al, 2020). Local-domain modeling can also be applied for investigating a target of interest inside a sub-volume of a medium, for example, in nondestructive testing where damage zones are commonly highly localized (e.g., fracture corridors, see Nosjean et al, 2020;Zerbst et al, 2016;Wiggenhauser et al, 2018), in medical acoustics where modeling targets are often local organs such as a beating artery or liver fat (e.g., Kyriakou, 2015;Solovchuk et al, 2015;Robertson et al, 2017), and in modeling of electromagnetic waves such as for ground-penetrating radar (GPR) which are often used to detect a local target in the Earth's subsurface (Lambot et al, 2004;Hartley et al, 2018;Akinsunmade et al, 2019). Particularly for imaging and inversion in all of these fields (e.g., Guyer & Johnson, 2009;Duan et al, 2017;Beach & Dunmire, 2007;Mari & Mendes, 2012;Ning & Sava, 2019;Wang et al, 2020), local-domain simulations may be useful to save computational cost compared to simulating full models.…”