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Nondestructive Hardness Testing

 

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Non-destructive testing (NDT) material testers are devices, machines and equipment that are used to determine residual stress, alloy type, hardness, microstructure, elasticity, heat treatment and other material conditions without permanently altering or destroying the material being examined.
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  • Portable Hardness Testing Facts
    value as low as 20HRC (75HB). They also excel at performing hardness tests on larger, harder metals as well. Another reason for the rise in popularity is due to the fact that the UCI method is categorized as "Non-Destructive". That translates into less scrap parts/ lower mfg costs due to necessary
  • Problems With Non-destructive Surface X-ray Diffraction Residual Stress Measurement (.pdf)
    Because surface measurements are non-destructive, xray. diffraction is often considered as a method of. residual stress measurement for quality control testing. Unfortunately, errors caused by the presence of a. subsurface stress gradient as well as difficulties in. interpreting surface results
  • Hardness Measurement: Invisible to the Human Eye
    - and microhardness testing where the load is incrementally increased over a specified range, then subsequently released under controlled conditions, provides valuable information on elasticity. The very light loads on the indenter associated with this method make it practically nondestructive. An additional
  • Air-Coupled Acoustics: Sound PAT for Tablet Characterization
    ., Cetinkaya, C. Frequency Domain Thickness Measurement Approach for Microscale Multilayered Structures. IEEE Transactions on Instrumentation and Measurement. 55: 206-211 (2006). 11 Kirsch, J.D., Drennen, J.K. Nondestructive Tablet Hardness Testing by Near-Infrared Spectroscopy: A New and Robust Spectral
  • X-ray Diffraction Characterization Of Residual Stresses Produced By Shot Peening (.pdf)
    . produced by shot peening is described. The need to. obtain a complete description of the subsurface residual. stress distribution, in order to accurately characterize. the residual stress distributions produced by shot. peening, is emphasized. Non-destructive surface residual stress measurements
  • Air-Coupled Acoustics: Sound PAT for Tablet Characterization
    By Ilgaz Akseli and Cetin Cetinkaya, Clarkson University Physical (mechanical) properties and mechanical defects (e.g., cracks, capping and delamination) of drug tablets may affect their therapeutic functions . Here, a non-contact/non-destructive acoustic technique for determining the mechanical
  • The Twists, Turns, Trials and Tribulations of Your Average Material
    than softer materials. Hardness testing is most often performed on metals, hard plastics, and even rubber.  Hardness testing is used to complement tensile and compression testing for several reasons.  It is fast, primarily, non-destructive, and can be performed directly on the component. Some
  • Application of X-ray Diffraction Residual Stress Measurement to Shot Peened Surfaces (.pdf)
    absorption coefficient. The drive to improve quality through non-destructive from the density and composition of the alloy. If XRD. testing has led inevitably to the attempt to monitor shot measurements are made at fine increments of depth by. peening processes using only the surface residual stress

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