Hegewald & Peschke offers a wide range of mechanical grips for tensile tests. This includes both from-fit and force-fit grips, each of which can be used for a wide range of materials, specimen shapes and temperature ranges.

Mechanical specimen grips at a glance:

• Vice grips
• Pincer grips
• Wedge type grips
• Screw type wedge action grips
• Specimen holders for shoulder, screw and thread head testing

Pneumatic grips are used primarily for tensile tests in a load range of up to 20 kN and for testing specimens that are sensitive to clamping. They enable efficient material testing with convenient operation either via hand or foot switch.

Advantages of pneumatic grips:

• versatile application possibilities:
  • suitable for testing fibers, foils, paper, textiles, plastics, strips, tapes, wires
  • suitable for materials sensitive to clamping forces
• high efficiency for testing large quantities
• constant controllable clamping force over the whole test
• more cost-effective, lighter and smaller required space compared to hydraulic grips

Fast and slide-safe tensile tests according to national and international standards, on worked and non-worked flat and round test pieces of metallic and nonmetallic materials of all tensile strengths... 

Applications for bending devices and folding devices:

• Determination of material properties of brittle composites, ceramics, metals, wooden panels, rigid plastics 
• Analysis of welded sheets

The further development of high temperature materials, as used in the construction of turbines or boilers for power stations or for aircraft engines, is a central focus of material research.

Temperature and climate chambers provide the possibility of material and component testing under defined environmental conditions...

Non-contact deformation measuring device for material testing on the basis of high-resolution video technology using the surface structure or, if required, markings.

The ONE-ROD video extensometer is an easy-to-use optical extensometer optimized for tensile testing on reinforcing steel and wire rods.

Test system for testing the tensile load of textiles and textile-reinforced plastics (e.g. composites, prepregs or organic sheets) with different types of bond...

Manual clip-on extensometers for fine extension measurement (E-modulus, Rp) or long-distance extensometers for fine and coarse extension measurement (E-modulus, Rp, A)...

The non-contact linear expansion measurement allows the automatic determination of the initial gauge length (L0). The optical system does not influence the measurement with knife edges or its own weight. Laser and video extensometers are used. 

Each model of the inspekt series can be equipped with a transparent Makrolon safety door. These are essential for some test procedures and materials for the protection of the operating personnel, e.g. in the case of splintering specimens. Depending on the design of the safety door, the various require-ments according to EN ISO 13489-1 can be performed. 

By using the changing device with linear roll guides the changeover times for the realization of different testing tasks at one machine can be reduced to a minimum...