Print Email Facebook Twitter The residual strength of aluminium alloy sheet specimens containing fatigue cracks or saw cuts Title The residual strength of aluminium alloy sheet specimens containing fatigue cracks or saw cuts Author Broek, D. Institution National Aerospace Laboratory NLR Date 1966-03-31 Abstract Specimens of 2024-T3 and 7075-T6 aluminium alloy sheet containing fine saw cuts appear to have the same residual strength as specimens with fatigue cracks of the same length. The stress level at which the fatigue cracks were grown does not affect the residual strength properties. Stop holes drilled at the crack tip postpone the onset of slow crack growth to a higher stress. If slow crack growth proceeds fracture the residual strength is not affected by the acuteness of the initial crack, and there always is slow crack growth if the stress that initiates slow crack growth is not raised to or beyond the residual strength of a specimen with a fatigue crack of equal initial length. To reference this document use: http://resolver.tudelft.nl/uuid:6f07ee73-20b6-420f-97e0-21a88b9fcc8e Publisher Nationaal Lucht- en Ruimtevaartlaboratorium Access restriction Campus only Source NLR TR M 2143 Part of collection Aerospace Engineering Reports Document type report Rights (c) 1966 National Aerospace Laboratory NLR Files PDF NLR-TR.M.2143.pdf 9.71 MB Close viewer /islandora/object/uuid:6f07ee73-20b6-420f-97e0-21a88b9fcc8e/datastream/OBJ/view