Direct and Residual Shear Testing Machine DIGISHEAR

Digishear is the entry-level machine for direct/residual shear testing.

 It incorporates one high-resolution stepper motor with high precision transmissions.

The user interface is based digital display LCD 4-row by 20 characters permitting you to start, pause and stop the test.

The axial transmission of the horizontal force adopts a straight connection through the shear box, shaft, and load cell. This design avoids the load measurement inaccuracies occurring with the widely used "swan neck" basic design.

A high-quality techno-polymeric material has been adapted for the carriage of the shear box, offering excellent resistance to corrosion, wear and tear, and to the chemicals often mixed with the soil specimens. Furthermore, this polymeric carriage is lightweight and easy to clean.

Vertical load is applied directly to the specimen via a loading yoke and a weights holding arm which amplifies 10 times the applied value.

The machine can be supplied in two different configurations:

- Analog with load ring and dial gauges

- Digital with load cell and displacement transducers that have to be connected to an external data acquisition system 

Standard complate analog configuration is composed by: 

• Digishear
• Shear box (see related products)
• Vertical dial gauge (see accessories and related products)
• Horizontal dial gauge (see accessories and related products)
• Load ring (see accessories and related products)
• Set of weights (see accessories and related products)

Standard complate electronic configuration is composed by: 

• Digishear
• Shear box (see related products)
• Vertical displacement transducer (see accessories and related products)
• Horizontal displacement transducer (see accessories and related products)
• Load cell (see accessories and related products)
• Data acquisition (see accessories and related products)
• Template for data processing ( see accessories) 
• Set of weights (see accessories and related products)

Main Features

• Maximum horizontal force: 5 kN
• Maximum vertical force: 5 kN
• Infinitely variable speed from 0.00001 to 15.00000 mm/min
• Digital display LCD 4-row by 20 characters
• High stiffness load chain shear box - driving head - load cell
• Compatible with shear boxes up to 100 mm diameter or square
• Sturdy shear box techno-polymeric carriage untouchable by corrosion
• Test velocity and travel (forward and reverse) adjustable (residual shear test)
• Suitable for analogue or electronic measurement with dedicated external data acquisition

Standards

• ASTM D3080

• AASHTO T236

• BS 1377:7

• EN 17892-10