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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
  • Case Study: Crack Detection in Con-rod Bolts
    The problem was that small cracks (bursts and folds) could not be reliably detected using existing inspection technologies. The Resonic ARIS system with the latest opposed twin transducer system was able to reliably detect the smallest "threshold" crack. A sample of "good", "threshold" and "bad
  • 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
  • Case Study: Defect Analysis of Forged Steel Tapered Spindles
    Samples of acceptable and unacceptable tapered spindles fabricated from 1039M steel were tested to determine the effectiveness of RM-EMAT based detection on the defects generated in the forging process. These samples are 5.75 in. long solid with tapered step geometry ranging from .8 in. to 1.45-in
  • Seeing Is Believing
    analysis such as finding a fine crack in a glass beer bottle. Vision systems are increasingly deployed to guide robots in performing assembly tasks. In addition, they facilitate necessary processes such as SPC and material planning by reading date and lot codes, and bar codes. Cosmetic defects
  • Medical Device Link .
    to be detected optically. Some of these cracks may cause sufficient electrical disruption to be detected during final electrical tests and inspection, but many of them escape detection. In service, the cracks are likely to expand as a result of normal thermal cycling of the system. The number of plates

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