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The cam plastometer is a physical testing machine. It measures the resistance of non-brittle materials to compressive deformation at constant true-strain rates. In this way, it can be compared a bit to the Gleeble(R). In the early days, the machine operates at relatively low strain rates, but over time it has been enhanced and currently it can operate over a wide range of strain rates〔J.E. Hockett and N.A. Lindsay, Journal of Physics E: Scientific Instruments 4 (1971), 520-522.〕 The machine is patented under the name of "United States Patent 4109516".〔(Cam plastometer (freepatentsonline.com) )〕 In the machine, deformation compressive forces are applied to a specimen by two flat, opposing platens which impact a flat, rectangular specimen. The deformation forces can be varied during operation, to simulate actual conditions which occur during industrial pressing and forming operations. The plastometer is also capable of torsional testing of specimens".〔 The cam plastometers are expensive and there are only a few of them in the world.〔G.E. Dieter et al., ''Handbook of Workability and Process Design'', ASM International 2003, page 49〕 ==References== 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cam plastometer」の詳細全文を読む スポンサード リンク
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