Taber Stiffness Tester

The TABER® V-5 Stiffness Tester – Model 150-B or 150-E is used to evaluate stiffness and resiliency properties of materials up to 10,000 Taber Stiffness Units. This precision instrument provides accurate test measurement to ±1.0% for specimens 0.004″ to 0.219″ thickness. Materials include paper products, cardboard, plastics, metals, textiles, rubber, wire, tubing, felts and other sheet materials.

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Description

Taber Stiffness Tester 

Accurate and precise bending stiffness measurements

Incorporated in the TABER V-5 Stiffness Tester is a bi-directional pendulum weighing system.  Providing an accurate and responsive method for measuring small load increments, this system is a critical component for determining material stiffness or resiliency.  Nine (9) distinct ranges permit testing of materials that are extremely lightweight and flexible (such as cellophane or thin metallic foils) to items that are very rigid (such as plastics).

For test ranges 2 – 9, specimens are mounted on the Taber V-5 Stiffness Tester using a clamping system.  Located on the pendulum, the lower faces of the specimen clamp jaws are exactly on the center of rotation.

This ensures a constant test length and deflection angle for accurate and repeatable results. Both jaws of the specimen clamp are adjustable, so the test specimen can be positioned precisely in the center regardless of material thickness. Force is applied to the lower end of the specimen by a pair of rollers. The rollers, which are attached to a driving disc located directly behind the pendulum, push against the test specimen and deflect it from its vertical position.  The pendulum applies increasing torque to the specimen as it deflects further from its original position.  The test point reading occurs when the pendulum mark aligns with the appropriate driving disc mark (7 1/2° or 15°), which points to the stiffness reading on the dial point.  The final reading will depend on the range in which the test is being conducted and what scaling factor to use.  The instrument outputs the moment load applied to the test specimen in TABER Stiffness Units (g · cm).

To allow the testing of materials with different stiffness properties, range weights can be applied to the pendulum.  For extremely light weight materials, a compensatory range weight is mounted to the top of the pendulum.  Range weights of 500, 1000 and 2000 “Taber Units” are mounted to the bottom of the pendulum and required for stiffer materials.  An optional range weight set of 3000 and 5000 Taber units is required for test ranges 7, 8 and 9.

 

Models

TABER Stiffness Tester – Model 150-E (115/230V, 50/60Hz)
– Stiffness Tester Model 150-E features an on-board computer that
automatically calculates and records stiffness testing data. Stiffness
readings are automatically converted to the appropriate user-selected
stiffness range, eliminating the need to manually multiply results by
a scaling factor. This instrument also calculates average, standard
deviation, and high/low readings. Using the 16 button keypad,
operators have the ability to select the direction, deflection and
number of deflection cycles. The instrument can also be operated
in manual mode, similar to Model 150-B.

With the accessory ports, data generated with the Model 150-E
Stiffness Tester can be either printed or downloaded to a PC. Plus,
up to 1,000 readings can be stored in non-volatile memory. In
addition to the internal real-time clock and calendar, stored readings
can be identified with an optional user-defined label. To download
data, an optional RS232 Serial to USB Adaptor Cable is recommended.

TABER Stiffness Tester – Model 150-B (110V, 60Hz)
– The Model 150-B is a manually operated instrument, which is based
on the original Taber V-5 Stiffness Tester. Mounted on telescoping
tripod legs, the Model 150-B is lightweight for easy portability.
Electronic components are sealed in a rugged housing. The model
150-B requires the user to manually record stiffness testing data,
average the readings and multiply results by a scaling factor.

 

 


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