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Tensile, Compression & Flexural

walter + Bai LF and TTM Series testing machines with its single test space designed for tension, compression, bend and folding, shear and static cyclic testing is specifically suitable for testing of metals-(wire, rod, tube, strip, plate, strip), fasteners (tensile, proof, single and double shear), construction materials (reinforcement bar, wire, mesh, folding, compression of concrete) and components.

All models of the LF and TTM Series feature a rigid load frame either in two- or four-column construction for minimum maintenance and low reaction at specimens failure.

The servo-actuator integrated in the upper crosshead with a long piston stroke makes testing space accessible for easy and efficient testing of different samples lengths. The long piston stroke meets the extreme requirements of international standards without changing the crosshead adjustment. On piston rod end a anti-rotation system prevents the natural tendency of the actuator to rotate.

The high precision load cell is located between base platen and lower grip, providing high accuracy test after test. Ergonomically design with unchanged height of lower grip and accessible test space for easy and efficient testing. With chrome plated columns for easy cleaning and longest life.

General Fatigue

walter + bai fatigue systems are designed to evaluate the mechanical properties in static, quasi-static and dynamic (fatigue) loading of materials, components, manufactured assemblies or finished goods.

w+b offers the wide selection of different models from small table top units, floor-standing machines up to high force capacity systems to test the wide spectrum across material testing.

The reliable servohydraulic frames combined with latest digital control system, software and extensive range of accessories turn this machines into flexible and most innovative systems.

w+b multipurpose dynamic testing system are available with actuator mounted in the base of the machine for materials testing of standard samples and fracture mechanical studies or with actuator on top with integral T-slot platen providing the ultimate flexibility suitable to fix grips or fixtures, components, specimens, manufactures assemblies or finished goods.

High Cycle Fatigue

RUMUL Resonant testing machines stress specimens or components with a dynamic load superimposed to a static load. The machines are equipped with a digital controller for each kind of load.

The dynamic load is generated by an oscillating system (resonator) which runs in its natural frequency. The oscillating system consists of masses and springs whereas the test piece is also an important part of it. The masses can be varied to change the operating frequency in steps.

The static load is made by a spindle and is coupled to the system by a spring. The machines discussed here are operating at full resonance, that means the operating point is on the peak of the resonant curve. The resonantor is excited by an electromagnet which has to supply the energy to maintain the required load amplitude.

Due to the resonant effect the power consumption is very low (typical 20 to 1000 Watts), that means 3% to 10% in comparison to a servo-hydraulic testing machine. The operating frequency is in a range of 40 to 300 Hz on standard machines