Shearography / ESPI Systems
For non-destructive testing (NDT) & vibration, deformation and strain measurement
System Components
The Shearography / ESPI Systems are based on our SE-Sensors and isi-Studio software in combination with special accessories for dynamic, thermal and vacuum loading. They are usable for a variety of applications, e.g. full field measurement, non-contact, non-destructive testing, vibration, deformation and strain measurement.
System Advantages
- Flexible and efficient: One sensor system for thermal, vacuum and dynamic loading
- Smart and mobile: Sensor can be operated by Laptop and components out of transportation cases
- Fully digital system: First and only full digital realtime phaseshifting shearography sensor
- No laser safety requirements: Laser class 1 with power from 0,1 W up to 12 W per module
- High resolution and sensitivity: 5 MPixel sensor, 10 nm light phase reconstruction
- High quality and variety of lenses: Designed for professional Nikon-F-mount lenses
Unique Detection Features
- Detection of de-bonding to foam and honeycomb where other methods fail
- Detection also on backside of sandwich structure by dynamic excitation possible
- Automated detection of image scale and distortion correction for determination of defect size
- Automated defect detection options
- Combination with IR-thermography system and accessories
- No frequency limitation for dynamic measurement - stroboscopic vibration analysis up to 500kHz
Field Ready
- High-performance band-pass filter permits measurement in daylight (indoors)
- Rapid and rigid mounting of sensor by flexible suction cup tripod
- Ruggedized sensor for rapid operation without need for adjustment
- Durable and waterproof all-in-one flight cases for immediate, turnkey use of sensor, vacuum tripod, and loading accessories
Sensors
The Shearography systems are applied for non-destructive testing, but also for vibration, deformation and strain measurement. The resolution of the differential deformation is a fraction of the wave length only und thus in the nanometer range and below. The laser wave length is the reference scale, so the resolution is independent of the field of view. The field of view is in the range of mm² to m². The preparation of the object in only required for surfaces, which are optically non-cooperative.
Loading methods
Applying shearography for non-destructive testing (NDT) requires structurally loading the object in a way that induces only minimal strains or deformations in the area under inspection. Depending on the specific application requirements, an ideal loading method can be selected, each offering advantages tailored to different operational needs.
- Dynamic
- Thermal
- Vacuum
isi-Studio
The isi-Studio software is designed to record quasi-static and dynamic measurements using ESPI and Shearography systems, primarily the SE sensor series from isi-sys.
We are constantly developing the isi-studio software. Discover the new features in 2025.
Non-Destructive Testing and Piezoshaker
The Piezoshaker generates Lamb waves that excite subsurface defects. Differences in their local vibration behavior enable the non-destructive detection of delaminations and debondings in sandwich structures. Shearography detects the resulting deformation differences and makes these subsurface defects visible.
Temperature Monitoring
- Monitoring surface temperature levels and changes due to thermal loading enables highly repeatable thermal loading conditions to be generated, as well as preventing sensitive object surfaces from overheating.
- IR cameras enable for full field temperature monitoring (resolutions up to 640 x 480 px) with a precise temperature measurement and high sensitivity for detection of small temperature changes.
- Single-point pyrometers can be mounted as alternative. It communicates direct via USB connection to the new isi-Studio Butterfly software.
Automated NDT System for Tubes and Tanks
Dynamic loading on a yacht mast
Automated NDT on guide blade rings of a turbojet engine
Dynamic and thermal excitation on a glider rudder
Dynamic loading on a large yacht hull
NDT on wind rotor blades
Other Products
Explore our advanced measurement systems for precise analysis. Contact us for personalized consultation and tailored solutions.
Digital Image Correlation Systems
High Speed Videostroboscopy Systems
Piezoshaker Systems
Specialized Cameras
Specialized Light Sources
Product inquiry
- Fast and non-binding quotation
- Expert consultations for complex applications
- User manuals and technical information on request