Crack Detection

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  • Asphalt Crack Detection Using Thermography
    This paper reports on research used to evaluate the application of infrared thermography for the detection of asphalt cracking, which in the past, has generally relied on images produced by analog and digital cameras operating in the visual range of light. Presence of shadows, poor light conditions
  • Detection and Sizing Techniques of ID Connected Cracking
    This paper provides a brief summary of advanced detection and sizing techniques for the evaluation of flaws connected to the inner surface of test material. In general, these techniques have found application for the detection, characterization and sizing of intergranular or transgranular stress
  • Ultrasonic Flaw Detection
    Of all the applications of industrial ultrasonic testing, flaw detection is the oldest and the most common. Since the 1940s, the laws of physics that govern the propagation of sound waves through solid materials have been used to detect hidden cracks, voids, porosity, and other internal
  • The Detection of Stud Line Cracking in Metal Stud Walls (.pdf)
    Polyurethane spray foams have found widespread use in the construction industry as insulation, moisture and air barriers. Due to the in-field application of Spray-Applied Polyurethane Foam (SPF), the foam is applied under a wide variety of environmental conditions. Applying spray polyurethane foams
  • Probe Types and Their Usage
    These are the probes normally used for surface crack detection, also known as High Frequency Eddy Current probes (HFEC). They have a small coil that can be made shielded or unshielded. Most are absolute types, although they can be made with the balance coil built into the probe body to ensure good
  • Intro to Ultrasonic Phased Array
    ultrasonic tests that include weld inspection, bond testing, thickness profiling, and in-service crack detection. This paper provides a brief introduction to how phased array systems work and how they can be employed in industrial ultrasonic nondestructive testing.
  • Introduction to Eddy Current Testing
    and service environments that require inspection of thin metal for potential safety-related or quality-related problems. In addition to crack detection in metal sheets and tubing, eddy current can be used for certain metal thickness measurements such as identifying corrosion under aircraft skin, to measure
  • An Introduction to Angle Beam Assemblies
    Angle beam assemblies, consisting of a transducer and a wedge, are extremely important to the field of ultrasonic nondestructive testing, commonly used in a wide variety of weld inspection applications and also for detection of cracks oriented perpendicular to the surface in metal plates, pipes

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