Rotorless rotational shear vulcameter offers variable oscillation frequency.The Visco-Elastograph is a rotorless rotational shear vulcameter with variable oscillation frequency The Oscillation frequency (fundamental period): to give an example you can think of a grandfather clock. The pole swings beating the second; the time it takes to start from a point and then go back to that point is the oscillation period (as you can see, the grandfather clock has and amplitude with an extremely fast temperature control and homogeneous temperature distribution in the closed reaction die. The Visco-Elastograph can be operated in the following modes: Frequency sweep; amplitude sweep; temperature sweep; vulcanization vulcanization (vŭl'kənəzā`shən), treatment of rubber to give it certain qualities, e.g., strength, elasticity, and resistance to solvents, and to render it impervious to moderate heat and cold. ; frequency and amplitude sweep with prior deflection; ramp test with deformation angle up to 90[degrees]; and relaxation test with deformation angle up to 90[degrees]. The Visco-Elastograph is used to determine the viscoelastic Adj. 1. viscoelastic - having viscous as well as elastic properties natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics" material behavior in a plasticized state during vulcanization and after vulcanization of the material sample. The torsional tor·sion n. 1. a. The act of twisting or turning. b. The condition of being twisted or turned. 2. load is imposed on the sample by the rotational oscillation Oscillation Any effect that varies in a back-and-forth or reciprocating manner. Examples of oscillation include the variations of pressure in a sound wave and the fluctuations in a mathematical function whose value repeatedly alternates above and below some of the lower test die half. Torque and phase angle are recorded as a function of the test time. The Visco-Elastograph is a tabletop device with integrated electronics. It features an internal PC for operation, program control and test data acquisition, with no mechanical settings required. The lower sine shaped test die half can be operated in oscillating os·cil·late intr.v. os·cil·lat·ed, os·cil·lat·ing, os·cil·lates 1. To swing back and forth with a steady, uninterrupted rhythm. 2. movements at a frequency of 0.01 up to 33 Hz, with an amplitude of [+ or -] 0.01[degrees] to [+ or -] 20[degrees]. The achievable deflection can be reduced with increasing frequency. Manual setting of up to 20 steps is accomplished in the operation mode "manual sweep." Thereby, the deflection, the frequency and the duration of each step can be set individually. Running with automatic frequency steps, the duration, deflection, starting and final frequency, as well as the amount of steps, can be set. Goettfert www.goettfert.com |
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