β Scribed by L. R. F. Rose
No coin nor oath required. For personal study only.
A plate with a semi-infinite crack is repaired by having reinforcing sheets bonded to its faces, and is subjected to a uniformly distributed tensile load at right-angles to the crack. It is shown that the crack extension force has a finite value, provided that the reinforced structure can still carry the load if the crack, instead of being semi-infinite, runs across the whole plate, cutting it in half. The case of a plate with a crack of finite length is considered next: the determination of the force is reduced to the solution of a Fredholm integral equation, from which the asymptotic behaviour for short cracks is deduced by the method of successive approximations. These results provide an upper bound to the force for arbitrary crack lengths. A comparison with numerical results suggests that this upper bound is sufficiently close to the actual value to be useful in practice. The residual thermal stress induced by the process of bonding, and the resulting force on a crack, are shown to depend sensitively on the nature of the constraint at the edges of the plate, as well as on the extent of the plate outside the heated region. A number of extensions to less idealized configurations are discussed.
π SIMILAR VOLUMES
AI&met-A plate with a crack, repaired by an adhesively bonded overlay of a finite strip, is investigated. In the analysis model it is assumed that due to high stress concentration an internal debonding between the strip and the plate may generate from the crack surfaces or, in other words, it is ass
## Abstract In this study, edgeβcracked steel plates repaired on twoβsides with composite as well as smart composite patches were investigated experimentally for their response to Charpy impact test. Woven glass and Kevlar fibres were used for composite patches. Each patch was made by two layers. T