STRESSTECH non-destructive testing and stress analysis systems

STRESSTECH inspection equipment (Finland): Rollscan Barkhausen noise analyzers, Xstress DR45 residual stress diffractometers, Prism 3 optical systems, and sensors.

Stresstech Oy: Finnish non-destructive testing technologies

Finnish precision engineering company Stresstech Oy, operating out of Tikkakoski, manufactures advanced non-destructive inspection systems for metal components. The enterprise maintains dedicated research laboratories, sensor calibration cells, and testing workshops.

Corporate headquarters in Finland with dedicated testing and metrology facilities
Qualified manufacturing procedures adhering to international ISO 9001 standards
Multi-stage precision verification from sensor tuning to final sample evaluation
Engineering selection of analyzers and sensors matching client technical drawings

Rollscan digital Barkhausen noise signal analyzers

The Rollscan analyzer series delivers rapid non-destructive evaluation of grinding burns and heat treatment defects in ferromagnetic components. Digital instrument Rollscan 350 supports multichannel operations, frequency sweeping, and automated system integration.

Digital instrument Rollscan 350 supporting up to four independent sensor channels
Rapid grinding burn and thermal damage detection without chemical acid etching
Broad magnetizing and analyzing frequency ranges for depth profile evaluation
Standard Ethernet and USB ports for direct connection to automated industrial lines

Barkhausen noise sensors for gears, shafts and bearings

Custom and standard SX series sensors are engineered for precision inspection of outer cylindrical surfaces, internal bores, gear flanks, and camshaft lobes. Robust housing design maintains stable electromagnetic coupling and reproducible measurement signals.

Specialized gear tooth sensors for flank, root radius, and tooth profile inspection
Dedicated camshaft sensors for axial and radial scanning of intake and exhaust lobes
Internal bore sensors designed for inner diameters and cylindrical bearing journals
Replaceable contact shoes and shielded signal cables built for demanding shop floors

Xstress X-ray diffractometers for residual stress testing

Xstress DR45 and mobile DR45-S diffractometers deliver quantitative measurement of biaxial residual stresses and retained austenite percentages in structural alloys. The instruments feature rapid 2D solid-state detectors and motorized goniometer positioning.

Quantitative residual stress evaluation compliant with EN 15305 and ASTM standards
Accurate retained austenite measurement in hardened structural steels and alloys
Advanced two-dimensional 2D detectors for rapid diffraction pattern acquisition
Compact goniometer head engineered for large structural elements and weld seams

Prism 3 ESPI optical hole drilling stress analysis systems

The Prism 3 optical system combines Electronic Speckle Pattern Interferometry with high-speed micro-hole drilling for rapid depth profiling of residual stresses. Contactless optical measurement eliminates the tedious preparation of bonded strain gages.

Residual stress depth profiling without the time-consuming bonding of strain gages
Contactless full-field surface distortion recording via reflected laser speckles
Integrated high-speed micro drilling unit with automated increment stepping feed
Automatic computation of principal stresses and direction angles in software suite

CamScan and GearScan semi-automated testing systems

Custom testing stations CamScan 500, GearScan 500, and BearingScan are developed for rigorous serial production testing of rotational machine parts. Motorized component rotation and sensor manipulation ensure repeatable and objective inspection cycles.

CamScan stations for comprehensive inspection of automotive camshafts and crankshafts
GearScan inspection rigs for cylindrical spur gears, helical gears, and bevel wheels
BearingScan inspection units for rolling element bearing rings and raceway tracks
Direct interfacing with proprietary BN Studio software and central plant databases

Technical heritage and quality management of Stresstech Oy

Finnish precision instrument manufacturer Stresstech Oy, headquartered in Tikkakoski, specializes in the design and production of advanced non-destructive inspection systems for stress evaluation in structural metals.

All engineering workflows and calibration laboratories operate strictly under international ISO 9001 quality management regulations.

The primary technical expertise of Stresstech centers on providing dependable instrumentation for the detection of grinding burns, thermal microstructural damage, and residual stresses in mission-critical parts.

The equipment is widely utilized throughout aerospace turbine manufacturing, automotive powertrain production, and precision bearing plants.

Physical fundamentals and benefits of Barkhausen noise inspection

The Barkhausen noise analysis method relies on the interaction between ferromagnetic domain walls and an alternating low-frequency magnetic field.

Local tensile and compressive stresses, as well as microhardness gradients resulting from heat treatment and grinding, directly govern the amplitude and envelope of generated high-frequency noise bursts.

Unlike harsh chemical etching with hazardous acids, Stresstech Rollscan technology provides an entirely non-destructive, environmentally sound, and immediate assessment of surface integrity.

This capability permits rapid one-hundred-percent production screening of automotive gears, camshafts, and bearing rings directly on the manufacturing floor.

Sensor architecture and workpiece adaptation of SX inductive probes

To ensure optimal electromagnetic coupling with complex component geometries, Stresstech supplies a versatile range of dedicated SX series inspection probes.

Each sensor tip incorporates durable contact shoes made from hardened alloys or ceramic materials, preventing surface scuffing on polished components while ensuring uniform air gap spacing.

The portfolio includes specialized probes for gear teeth flanks and roots, contour-following probes for camshaft lobes, and compact internal bore probes for deep holes.

The ergonomic design enables operators to position the sensing probe into tight spaces within fractions of a second, yielding repeatable signal acquisition.

Biaxial residual stress determination with Xstress DR45 diffractometer

Xstress DR45 X-ray diffractometers represent an industry benchmark for quantitative residual stress determination and retained austenite volume fraction measurement according to European EN 15305 and ASTM E915 standards.

Dual two-dimensional 2D detectors record complete Debye diffraction rings rapidly without extensive step-scanning delays.

The instrument incorporates a motorized goniometer featuring automated multi-axial rotation, minimizing crystallographic texture effects and grain size distortions on measured stress values.

The compact goniometer architecture allows direct non-destructive measurements on heavy turbine rotors, industrial pressure vessels, and orbital pipeline welds.

High-speed optical hole drilling with Prism 3 speckle interferometry

The Prism 3 residual stress measurement system combines electronic speckle pattern interferometry with high-speed micro-hole drilling starting at one millimeter diameter.

As the drilling unit steps incrementally into the workpiece, localized stress relaxation causes surface distortion recorded optically by a high-resolution imaging head.

The key operational advantage of the Prism 3 system lies in eliminating manual installation, wiring, and resistance calibration of delicate foil strain gages.

Measurement preparation drops from several hours to minutes, while the integrated software automatically calculates principal stress magnitudes and principal orientation angles versus hole depth.

Metrological support, calibration standards and maintenance service

Long-term metrological accuracy of Stresstech instruments is maintained through regular preventive servicing, channel recalibration, and the application of reference calibration blocks.

Upon customer request, Stresstech provides reference stress samples with calibrated stress values along with specialized test blocks exhibiting calibrated thermal damage levels.

To safeguard continuous multi-shift inspection in high-volume production plants, the support program provides replacement contact tips, heavily shielded sensor cables, and routine BN Studio software updates.

Qualified engineering specialists assist clients in defining reliable rejection thresholds and developing customized test protocols.

STRESSTECH and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of STRESSTECH and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.