Concealed joints

Keywords Adhesive modulus Adhesys expert system Co-axial joints Compression Concealed joints Creep Elastic limit Epoxy Epoxy composite Einite element analysis Glue line thickness Goland and Reissner Hart-Smith Heat exchanger Hooke s Law Joint designs Joint thickness Lap shear strength Peel Plastic behaviour Polyurethane Pipe bonding Shear stresses Shear modulus Stress distribution Thick adherend shear test Tubular joints Volkersen equation Young s modulus... 

Thin to large wall Designing around TP problems is the joint responsibility of the product and mold designers. For example, one way to handle the problem of thin to large area walls is by the inclusion of long ribs into the product in the direction of plastic flow. These ribs are not a functional requirement of the product but they act as auxiliary runners attached to the product to facilitate plastic flow in difficult to fill areas. In some instances the ribs may be used as a surface decoration like a corrugation or they may be on the concealed side of the product where they are stiffeners. 

D. L. McMakin, D. M. Sheen, H. D. Collins, T. E. Hall, and R. H. Severtsen, Detection of concealed weapons and explosives on personnel using a wide-band holographic millimeter-wave imaging system, presented at American Defense Preparedness Association Security Technology Division Joint Security Technology Symposium, Williamsburg, VA, 1996. 

All welded joints can be tested for concealed imperfections by X rays, and code specifications usually require X-ray examination of main seams. Hydrostatic tests can be conducted to locate leaks. Sometimes, delicate tests, such as a helium probe test, are used to check for very small leaks. 

Baseboard (1853) n. (I) Board along the base of a wall usually finished with moldings. (2) A molding that conceals the joint between an interior wall and floor. Syn for base, skirting board, base plate, mop board, scrub board, kick board, and washboard. 

Joint tape n. Paper or paper-faced cotton tape, metal, febric, glass mesh, or other material, sometimes embossed or perforated, which is fixed over the joints between wall-boards, to conceal the joints and provide a smooth surface for painting. 

Nondrying mastic sealers for concealed metal-to-metal joints where elasticity and resistance to staining are not essential, e.g., hidden joints in curtainwall construction, acoustical sealants, hidden automotive panel sealants, and gap fillers. 

This is a large and growing application for butyl rubbers. Butyl caulks are used in limited movement lap and butt joints, and in concealed or interlocking metal-to-metal joints such as are found in curtain wall... 

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