Electromechanical, servo-hydraulic, linear drive, and resonance drive are used. Some machines can program the crosshead speed or conduct cyclical testing, testing at constant force, testing at constant deformation, etc. Usually this is at a constant speed: sometimes called a constant rate of extension (CRE) machine. Cross head - A movable cross head (crosshead) is controlled to move up or down.Periodic is usually required by governing regulations or quality system. - A or other means of measuring the load is required.Some small machines have a single support. Load frame - Usually consisting of two strong supports for the machine.Components Several variations are in use.Orange/tan cloth bound cover, with black titles on spine and front board, slightly bumped to spine ends. : The Hounsfield Tensometer Type W Instruction Manual Publication No.
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