Materials Testing Systemsw+b Testing Machines are the pacemaker for trendsetting technologies. They are a prerequisite for the safety and quality of materials, industrial products and buildings.
Axial / Torsional Test SystemsMultiaxial states of stress and strain are very common in service life of components as wind turbine rotor blades, crankshaft, pressure vessels and many others. Consequently limiting the evaluation of a material characteristic to uniaxial tests may lead to misrepresentation of the behavior of a material in real constructions. Indeed, using more realistic loading conditions, i.e. biaxial conditions, will lead to a more accurate representation of the expected behavior of the structure in-service.
w+b offers a wide range of axial/torsional test systems for static and dynamic biaxial testing. The modular designs are available as electromechanical or servohydraulic systems.
Biaxial Planar Test SystemsDuring service components are often subjected to multiaxial stresses. For biaxial testing of materials, particularly composites, metals, textiles, biomaterials or plastic under a wide range of biaxial stress states, typically a cruciform specimen in conjunction with a testing machine capable of bearing independently controlled loading on two orthogonal axes is used. The cruciform specimen avoids stress concentrations and provide a uniformly stressed test section. Load application for the cruciform can be accomplished in a robust frame supplied with a separate drives (either electromechanical or servohydraulic) and separate load cell to check for off-axis or unbalanced loading. Depending on test conditions w+b offers Biaxial Testing Systems in different configurations adapted to multiaxial testing in creep, static strength, fatigue or high speed mode in different force ranges. Available are systems with Electromechanical Drives or Servohydraulic Actuators.
High Force SystemsHigh-Force Mechanical Testing is critical for the determination of the mechanical properties of materials as well as the performance and durability of large components, sub-assemblies or finished goods.
Walter+Bai AG Testing Machines have long history in design and manufacture standardised to custom manufactured high-rate tests system. To meet specific customer requirements the spectrum of high-force testing systems range from static testing machines for the determination of the mechanical properties to dynamic tests systems.
Steel Bend Testing MachinesDesigned for bending and straightening (re-bend)
This rebar bend and re-bend unit is designed to verify the bend resistance of reinforcing steel bars in accordance with EN 15603-1,
ISO 7438, ASTM A615&A615M, EN 10080, BS4449 and other international standards.
As most reinforcing steel will require bending before it is installed into the concrete structure standards requires to perform bend test
with specified minimum mandrel diameters and taking into consideration the effect of minimum temperatures and/or aging. Certain
standards additionally require a re-bend test.