Joining scarf

Plywood requirements—includes wood species used, synthetic repair requirements, veneer grades, veneer layers and thicknesses, panel grades with respect to end-use, adhesive bond requirements, panel construction and workmanship, scarf and finger-join ted panels, dimensional tolerances, moisture content, and packaging and loading... 

Composites may be joined by bonding, bolting or both. Scarf, stepped lap, supported single-lap joints are the most common, but single-lap or double-lap types are used (Shear tests). 

Joint jomt [ME jointe, fr. OF, fr. joindre] (13c) n. The location where two separately made parts are joined with each other by adhesive bonding, welding, or fastening. Skeist I (ed) (1990) Handbook of adhesives. Van Nostrand Reinhold, New York. See also butt joint, lap joint, and scarf joint. 

Lap joint (1823) n. A joint made by placing one surface to be joined partly over another surface and bonding or fastening the overlapping portions. Compare butt joint and scarf joint. 

Flexible plastics and elastomers. Thin or flexible polymeric substrates may be joined using a simple or modified lap joint. The double strap joint is best, but it is also the most time consuming to fabricate. The strap material should be made out of the same material as the parts to be joined or at least have approximately equivalent strength, flexibility, and thickness. The adhesive should have the same degree of flexibility as the adherends. If the sections to be bonded are relatively thick, a scarf joint is acceptable. The length of the scarf should be at least four times the thickness sometimes, larger scarfs may be needed. 

Bonded hox spars were used in the wings together with laminated spruce booms. To build up the rear spars, sections were joined using scarf joints and adhesive. 

Mechanical adhesion depends on surface topography, which can be considered a collection of many geometrical forms. Therefore, mechanical adhesion depends on the stress states of different adhesive joint geometries on the scale of the surface topography, which may include many lap, butt, and scarf joints in the interphase region. To address this issue, Ma et al. (2001) compared the stress distributions in adhesive joints as functions ofvarying geometrical interfaces described mathematically in polynomial or other functional forms, as well as the material properties of the adhesive and the adherend or two different substrates joined by an... 

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