Definitions /Dictionary/Glossary - nptel
Definitions /Dictionary/Glossary - nptel
Definitions /Dictionary/Glossary - nptel
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Scarf Joint: A bonded joint in which similar segments of adherends are cut away, with cut areas<br />
overlapped and bonded.<br />
Scrim (also called Glass Cloth, Carrier): A low cost fabric woven into an open mesh<br />
construction, used in the processing of tape or other B-stage material to facilitate handling.<br />
Scrimp: A patented variation of the RTM process.<br />
Sealant: Applied to a joint in paste or liquid from that hardens in place to form a seal.<br />
Secondary Bonding: The joining together, by the process of adhesive bonding, of two or more<br />
already-cured composite parts, during which the only chemical or thermal reaction occurring is<br />
the curing of the adhesive itself.<br />
Secondary Structure: Aircraft or Aerospace structure that is not critical to flight safety.<br />
Self Extinguishing: Ceases to burn when the source of flame is removed.<br />
Selvage or Selvedge: The woven edge portion of a fabric parallel to the warp.<br />
Set: The strain remaining after complete release of the force producing the deformation.<br />
Set-Up: To harden, as in curing.<br />
Shear: An action or stress resulting from applied forces which causes or tends to cause two<br />
contiguous parts of a body to slide relative to each other in a direction parallel to their plane of<br />
contact. Inter laminar Shear (ILS). The plane of contact is composed of resin only.<br />
Shear Edge: The cut-off edge of the mold.<br />
Shear Fracture (for crystalline type materials): A mode of fracture resulting from translation<br />
along slip planes which are preferentially oriented in the direction of the shearing stress.<br />
Sheet Molding Compound (SMC): A ready-to-mold glass fiber reinforced polyester material<br />
primarily used in compression molding.<br />
Shelf Life: The length of time a material, substance, product, or reagent can be stored under<br />
specified environmental conditions and continue to meet all applicable specification<br />
requirements and/or remain suitable for its intended function.<br />
Shore Hardness: A measure of the resistance of a material to indentation by a spring loaded<br />
indenter. A higher number indicates greater resistance.<br />
Short Beam Strength (SBS): a test result from valid execution of ASTM test method D 2344.
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