TWI is the leading innovator in the field of Thermographic NDT and the premier solution provider for the most demanding applications in the aerospace, power generation and automotive industries. Building on a physics-based approach to signal processing, dedicated hardware development and application-specific algorithms and procedures, TWI has deployed state-of-the-art inspection solutions for the field, factory floor and large-scale advanced manufacturing around the world for over two decades.

Thermographic Signal Reconstruction® (TSR®)

TWI’s patented Thermographic Signal Reconstruction (TSR) method has been widely recognized as a breakthrough in the field of thermography. TSR performance for flaw detection far surpasses that of conventional approaches, which rely on detection of “hot spots” in the IR image sequence. While conventional thermography is adequate for some simple inspection tasks, it often lacks the accuracy, sensitivity and repeatability required to “meet or exceed” the performance of established inspection methods, such as ultrasound.  Introduced by TWI in 2001, the TSR method addresses these limitations, and allows an unprecedented degree of sensitivity, depth range and resolution of subsurface defects. The introduction of TSR has played a significant role in the growth of thermography in real-world manufacturing and in-service inspection applications. In addition to flaw detection, the quantitative nature of TSR enables material characterization, including precise measurement of  thickness, defect depth and thermal diffusivity in a wide range of composites, metals, polymers, ceramics and advanced materials.

Large Area Projection Thermography

Originally developed for the US Navy, TWI’s Large-Standoff, Large-Area ThermographyTM (LASLATTM) offers a groundbreaking approach to inspection of large structures, operating at a large stand-off distance (up to 15 ft) to cover an area as large as 250 ft2. It automatically scans the entire inspection area, providing a subsurface map of defect indications that is easily interpreted by the operator. MOSAIQ® analysis tools provide measurement of flaw size and registration on the actual part. LASLATTM’s versatility allows a single mobile system to be used for inspections on multiple platforms without the need for a fixed gantry. Automated inspection routines eliminate manual positioning, providing repeatable inspections.

Advanced Flash Technology

Thermal Wave Imaging, Inc. has addressed the problem of flash “contamination” by developing hardware that allows precise control of flash duration and timing with respect to the integration time of the camera. The Precision Flash Controller is software controlled and it can be added to existing EchoTherm® or Thermoscope® systems. It truncates the actual plasma discharge and yields a near-rectangular pulse. As a result, saturation and early frame contamination can be eliminated in most cases.

This development has resulted in significant performance improvement of the Thermographic Signal Reconstruction® algorithm used in EchoTherm® and Thermoscope®, for both detection of deeper defects and quantitative measurement, and closer agreement of experimental data with model predictions.

Automated Turbine Blockage Detection

TWI has redefined cooling hole and channel blockage inspection for aero turbine engine airfoils and IGT buckets. Our fully automated robotic solution is the new inspection benchmark offering unprecedented precision, speed and reliability. Testimonial from major OEMs using TAFIS is quite simply that our solution obviates conventional testing methodologies i.e. pin gauge, water flow, and hot wax expulsion.
In addition to detecting hole and channel blockages, TWI technology can also measure TBC thickness, detect TBC delamination and detect cracks for land and aerospace based turbine components.

Have Questions? We’re Here to Help.