Abstract
This chapter considers the fracture behaviour of propagating and subsequently arresting cracks and of cracks under impact loading. Loading techniques and measuring methodologies for determining the crack arrest toughness KIc and the impact fracture toughness KId are discussed. Conventional measuring procedures are outlined; the validity and the applicability range of these procedures are critically examined. Furthermore, the physical processes that control the various dynamic events are analyzed by means of a special optical technique which determines the dynamic stress intensity factor directly from the local stress strain field at the crack tip. On the basis of the established results, improved measuring techniques are developed that are capable of determining true dynamic material strength properties at arbitrary test conditions without any restrictions in crack propagation velocity, loading rate, load duration, etc.
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Kalthoff, J.F. (1990). Experimental Fracture Dynamics. In: Klepaczko, J.R. (eds) Crack Dynamics in Metallic Materials. CISM International Centre for Mechanical Sciences, vol 310. Springer, Vienna. https://doi.org/10.1007/978-3-7091-2824-4_2
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