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Roughness plays an important role in determining how a real object will interact with its environment. In tribology, rough surfaces usually wear more quickly and have higher friction coefficients than smooth surfaces. Roughness is often a good predictor of the performance of a mechanical component, since irregularities on the surface may form ...
The white handle of this tantÅ (left) is covered with shagreen in its natural form. Two small decorative elephants made of silver and shagreen. Shagreen has an unusually rough and granular surface, and is sometimes used as a fancy leather for book bindings, pocketbooks and small cases, as well as its more utilitarian uses in the hilts and scabbards of swords and daggers, where slipperiness is ...
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To heat a material such that certain temperature dependant changes occur, examples being oxididation, reduction, phase changes or the loss of chemically-bound water. Ceramic raw materials which are calcined include clay, bone and talc. Candling The lower temperature stage of some firing cycles used to complete the drying of the ware. Carbonizing
Crash is a coarse fabric with a rough, irregular surface, made from thick, uneven yarns. Crash fabric is coarse linen-based rugged material made from both dyed and raw yarns. The yarns used are often grey or white in color. Crash fabrics are indistinct woven.
Riprap (in North American English), also known as rip rap, rip-rap, shot rock, rock armour (in British English) or rubble, is human-placed rock or other material used to protect shoreline structures against scour and water, wave, or ice erosion.
Unlike carving, the sculptor often also has the option of correcting mistakes by removing or reshaping the material. Modeling requires a malleable or plastic material which is later cured or fired to set it hard. Typical modeling materials include clay, wax, plaster, and papier-mâché.
The resistance of materials and structures to abrasion can be measured by a variety of test methods. [2] These often use a specified abrasive or other controlled means of abrasion. Under the conditions of the test, the results can be reported or can be compared items subjected to similar tests.