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Grips & Fixtures

Flexural & Compression

Compression Anvil TJ-146

About the Grip

These are compression fixtures used for testing various materials from mounts, to springs & even materials with very small diameter. The fixtures are round shaped compression platens with a wide diamter range to cover any sample dimension. The platens provide a hardened surface for complex compression tests in which uniform stress distribution is critical.

The platen for both the upper and lower surfaces are large enough to prevent any part of the specimen from overhanging the plate. This assures even loading across the entire specimen.

This fixture is used to determine the compressive strength of the specimen when resting on the frame’s lower plane platen.

Principle of Operation

The hardness of the compression platens ensures lack of deformity at pressures up to their capacity. Their inscribed concentric circles along with a crosshair axis ensure proper, centered placement of the specimen, thereby increasing the validity of test results. A level seating surface and even load distribution over the specimen is ensured due to the high tolerance in the flatness of the surface. This aids the operator in attaining valid test results and true failure measurements.

Features

Operate in static compression only.

Temperature Key
  • T1: RT to +60°C
  • T2: RT TO 300°C
  • T3: 70°C to 300°C
Application Range

General compression testing for a wide range of materials and products for the purpose of determining one or more of the following compressive properties:

  • Compressive Yield Strength
  • Compressive Strength
  • Offset Yield Stress
  • Percentage Compressive Strain at Compressive Yield Stress
  • Percentage Compressive Strain at Rupture
  • Compressive Stress at Specified Compressive Strain

Direct Compression Fixture – TJ 125

About the Grip

These are specialty fixtures used for testing full size formed concrete, clay, fertilizer grains, and rock materials. The fixtures are spherical, rectangle or square shaped seated compression platens sized for testing either bricks or concrete blocks. The platens provide a hardened surface for complex compression tests in which uniform stress distribution is critical.

The test fixtures are designed to accommodate one full concrete block. The platen for both the upper and lower surfaces is large enough to prevent any part of the specimen from overhanging the plate. This assures even loading across the entire specimen.

These compression test fixtures are designed to accommodate either full size or half size specimens. This fixture is used to determine the compressive strength of the specimen when resting on the frame’s lower plane platen (when provided).

Principle of Operation

The hardness of the compression platens ensures lack of deformity at pressures up to their capacity. Their inscribed concentric circles along with a crosshair axis ensure proper, centered placement of the specimen, thereby increasing the validity of test results. A level seating surface and even load distribution over the specimen is ensured due to the high tolerance in the flatness of the surface. This aids the operator in attaining valid test results and true failure measurements.

Features

Operate in static compression only.

Temperature Key
  • T1: RT to +60°C
  • T2: RT TO 300°C
  • T3: 70°C to 300°C
Application Range

General compression testing for a wide range of materials and products for the purpose of determining one or more of the following compressive properties:

  • Compressive Yield Strength
  • Compressive Strength
  • Offset Yield Stress
  • Percentage Compressive Strain at Compressive Yield Stress
  • Percentage Compressive Strain at Rupture
  • Compressive Stress at Specified Compressive Strain

Shear Adhesion SH-AD-421

About the Grip

– To accurately assess the shear adhesion strength of ceramic tiles, it is necessary to employ a precise test fixture following the guidelines outlined in ISO 13007-2.

– This fixture is designed to securely position the tile in a horizontal orientation, tilted at an angle of -4 degrees relative to the vertical axis.

 
Principle of Operation
Compressive shear testing is simply the pushing apart of a material sample along a plane parallel to, and between, opposing forces.
Application

For Tile Adhesion testing

3-Point Bending -TJ 124

About Grip

Description:
– The flexure fixture allows a variety of flexural and fracture toughness bond tests to be performed, including the determination of flexural modulus, flexural strength, and flexural yield strength.

– These fixtures have adjustable spans with easy-to-use, permanently attached scales for equal positioning of the rollers. –

– The span can be set up in a four-point configuration, for a region of constant stress, or in a four-point configuration as per the type of fixture selected, to provide a line of maximum stress. Any of the roller sizes listed below can be used.

– Lower anvils are adjustable to accommodate specimens of different spans.

– Deflection of the specimen can be measured either through crosshead displacement.

Principle of Operation

–  The specimen is supported on two precision machined (free to rotate or stationary) anvils of a defined radius.

– The force is applied either centrally at a defined distance on either side of the center (4 point).

– The support beam is graduated lengthways in metric units for accurate positioning of the anvils, equally spaced to the center line.

Application Range

– Determining the flexural properties of rigid and semi-rigid materials such as glass, ceramics, composites, wood and rigid plastics, etc in the form of rectangular bars of standard or non-standard dimensions, molded directly or cut from sheets or other shapes. The following properties can be determined:

  • Flexural Stress at a given time of test
  • Flexural Stress at the conventional deflection
  • Flexural Stress at Maximum Load
  • Flexural Stress at Rupture
  • Apparent Modulus of Elasticity in Flexure
  • Static flexure, cyclic flexure tests
Temperature Key
  • T1: RT to +60˚C
  • T2: RT TO 300˚C
  • T3: -70˚C to 300˚C

– All supports and loading points are hardened steel cylinders, held in vee-grooves by small springs on each end.

– This permits them to be rotated and also to be easily replaced if desired. Other loading and support span widths and cylinder diameters can be provided upon request.
The base of the flexure test fixture is provided with a female stud containing a cross-pin hole, for attachment to the base of the testing machine. The compressive loading is applied through another stud to be attached to the crosshead of the testing machine.

4-Point Bending - TJ 165

About Grip
  • Description:
    – The flexure fixture allows a variety of flexural and fracture toughness bond tests to be performed, including the determination of flexural modulus, flexural strength, and flexural yield strength.

    – These fixtures have adjustable spans with easy-to-use, permanently attached scales for equal positioning of the rollers. –

    – The span can be set up in a four-point configuration, for a region of constant stress, or in a four-point configuration as per the type of fixture selected, to provide a line of maximum stress. Any of the roller sizes listed below can be used.

    – Lower anvils are adjustable to accommodate specimens of different spans.

    – Deflection of the specimen can be measured either through crosshead displacement.

Principle Of Operation
  • –  The specimen is supported on two precision machined (free to rotate or stationary) anvils of a defined radius.

    – The force is applied either centrally at a defined distance on either side of the center (4 point).

    – The support beam is graduated lengthways in metric units for accurate positioning of the anvils, equally spaced to the center line.

Application Range

– Determining the flexural properties of rigid and semi-rigid materials such as glass, ceramics, composites, wood and rigid plastics, etc in the form of rectangular bars of standard or non-standard dimensions, molded directly or cut from sheets or other shapes. The following properties can be determined:

  • Flexural Stress at a given time of test
  • Flexural Stress at the conventional deflection
  • Flexural Stress at Maximum Load
  • Flexural Stress at Rupture
  • Apparent Modulus of Elasticity in Flexure
  • Static flexure, cyclic flexure tests
Temperature Key
    • T1: RT to +60˚C
    • T2: RT TO 300˚C
    • T3: -70˚C to 300˚C

    – All supports and loading points are hardened steel cylinders, held in vee-grooves by small springs on each end.

    – This permits them to be rotated and also to be easily replaced if desired. Other loading and support span widths and cylinder diameters can be provided upon request.
    The base of the flexure test fixture is provided with a female stud containing a cross-pin hole, for attachment to the base of the testing machine. The compressive loading is applied through another stud to be attached to the crosshead of the testing machine.

Compression Test of FRC - TJ 175

About Grip

– These grips are used to produce compressive property data for material specifications, research and development, quality assurance, and structural design and analysis.

– These grips give the Compressive properties of polymer matrix composite materials, by shear loading, provides material data including compressive strength, strain, poisson’s ratio and modulus.

Features
– Comes with 2 sets of wedge jaws: 0-8mm and 8-16mm.
– Gauge Blocks: 10mm and 25mm are provided by default.
Application

– Materials particularly well suited for testing in these grips include papers, tissues, aluminum, plastic films, textiles, waxed paper, film containing strip additive and other materials with low and medium tensile strength.

– This method determines in-plane compressive properties by applying the compressive force into the specimen at wedge grip interface.

– Of materials like Polymer Matrix Composites
Materials with Unsupported Gauge Section

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