The laminate material properties of base, repair and external patch materials can be distinct.Į. In adition, each ply can have arbitrary fiber orientation and thickness denoted by θ k and t k, respectively. The ply material properties of these laminates are defined by the elastic moduli ( E 1, E 2, E 3), shear moduli ( G 12, G 23, G 13) and Poisson’s ratios ( v 12, v 23, v 13) where the subscript 1 is used to indicate the fiber direction and subscripts 2 and 3 indicate the directions perpendicular to the fiber direction. base, repair and external patch) are made of fiber reinforced composite materials. The thickness of the scarf bond between base and repair materials is denoted by t s, while the thickness of the adhesive layer between the base and patch and the repair and patch materials is denoted by t a. The adhesive areas between base and patch as well as repair and patch materials are denoted by A2 and A3, respectively. As shown in Fig. 16.2 and Fig. 16.3, the scarf bond area between base and repair material is denoted by A1. The scarf ratio, SR, is defined as SR = ( R O − R I)/2 h b. The inner and outer radii of the repair material also determine the scarf bond region. In the case of a single-sided scarf repair ( Fig. 16.2), the repair material has a semi-conical shape whose inner and outer radii are denoted by R I and R O, respectively. Hence, the scarf ratio is defined as the length of the scarf to the thickness of the base laminate as SR = R/2 h b. The scarf length is denoted by R and the thickness of the base (or repair material is denoted by 2 h b = 2 h r ( Fig. 16.2). The external patch dimensions are specified by W x and W y. The planar dimensions of the scarf joint and repair are denoted by L x and L y as shown in Fig. 16.2 and Fig. 16.3. Single-sided scarf repair with an external overlay patch. The small part of a gun between the chase and the swell of the muzzle.16.3.(architecture) The gorgerin of a capital.The constriction between the root and crown of a tooth.(engineering) A reduction in size near the end of an object, formed by a groove around it.A long narrow tract of land projecting from the main body, or a narrow tract connecting two larger tracts.(music) The extension of any stringed instrument on which a fingerboard is mounted.* Archegonia are surrounded early in their development by the juvenile perianth, through the slender beak of which the elongated neck of the fertilized archegonium protrudes.(botany) The slender tubelike extension atop an archegonium, through which the sperm swim to reach the egg.The tapered part of a bottle toward the opening.The part of a shirt, dress etc., which fits a person's neck.The corresponding part in some other anatomical contexts.The part of body connecting the head and the trunk found in humans and some animals.
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