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Thermal Imaging
Thermography is a generic term for a variety of techniques used to visualize the temperature at the surface of objects and refers to imaging of a... -
Use of Ultrasound Excitation and Optical-lockin Method for Speckle Interferometry Displacement Imaging
Quality control requires the detection of defects that are caused by the production process or later by deterioration. If such defects are detected... -
Delamination Detection in Laminated Composites Using Lamb Waves
This investigation examines the application of low frequency Lamb waves for the detection of delaminations in thick composite laminates. Surface... -
Laser Induced Breakdown Spectroscopy Technique For In-Situ Dust Detecting In A Next-Step Tokamak
A technique based on laser-induced breakdown spectroscopy (LIBS) is proposed for detecting in-situ dust on the plasma-exposed surfaces and in the... -
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Characterization of plasma-sprayed coatings using nondestructive evaluation techniques: Round-robin test results
A round-robin test was implemented where nine European research institutions and universities applied different thermal, ultrasonic, and magnetic...
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Process Control
Injection molding control involves many facets of both machine operation and the behavior of plastic, most importantly their interaction. Principally... -
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Applying Phase Sensitive Modulated Thermography to Ground Sections of a Human Tooth
Thermophysical properties and acoustical parameter pattern are of high interest for numerical modeling of heat transfer processes, transient stress... -
Applications of Pulse Phase Thermography
Recently, a novel approach was proposed which combines advantages of both pulse (PT) and modulated (MT) infrared thermography. In a nondestructive... -
Glass Fiber Airplane Inspected with Infrared Lockin Thermography
Lockin thermography is a remote nondestructive testing method, suited for the inspection of large surfaces. As the method is based on heat conduction... -
Thermographic Inspection with Ultrasonic Excitation
Infrared thermography is a powerful, fast and non contact method for non destructive testing of materials, based on heat conduction. While techniques... -
Challenges for SiGe-Heterotechnology
Heterostructure devices composed of silicon, silicon-germanium or germanium layers have substantially broadened the spectrum of the well established...
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Advances In Signal Inversion With Applications To Infrared Thermography
Approaches to performing the thermal characterization of defects in solids are discussed including phenomenological treatment of experimental data,... -
Millimeter Waves Non-Destructive Testing (N.D.T) of Composite Materials and Dielectrics
An experimental non-destructive evaluation microwave sensor was built to verify the feasability of N.D.T. for composite materials and advanced... -
Adiabatic Thermoelastic Measurements
The adiabatic thermoelastic effect in elastic solids is the small, reversible temperature change resulting from the dilatational deformation of... -
Nondestructive Evaluation of Fiber Composite Laminates by Thermoelastic Emission
During the rapid cyclic loading of a structure (≥ .5 Hz), the cyclic variation of surface temperature can be measured with infrared radiometry. The...