Computer-controlled apparatus for internal friction and Young's modulus measurements as a

Coluzzi, B.; Biscarini, A.
December 1996
Review of Scientific Instruments;Dec1996, Vol. 67 Issue 12, p4240
Academic Journal
Develops a mechanical-resonance apparatus which allows automatic recording of internal friction and dynamic Young's modulus as a function of temperature. Vibrating sample kept at resonance; Readjustment of the frequency of the driving signal supplied by a computer-controlled frequency synthesizer; Comparison with previous automatic control systems.


Related Articles

  • A single quartz crystal to measure dynamic elastic moduli at several ultrasonic frequencies. Thomas, V.; Giacomin, A. J.; Wolfenden, A. // Review of Scientific Instruments;Feb1993, Vol. 64 Issue 2, p492 

    An instrument for measuring the elastic moduli at several ultrasonic frequencies, using a single quartz crystal, has been developed. In the past an array of pairs of oscillators was used as part of the piezoelectric ultrasonic composite oscillator technique to measure the dynamic Young’s...

  • High-resolution He-scattering apparatus for gas–surface interaction studies. David, Rudolf; Kern, Klaus; Zeppenfeld, Peter; Comsa, George // Review of Scientific Instruments;Nov86, Vol. 57 Issue 11, p2771 

    A high-resolution apparatus designed for the study of elastic and inelastic scattering of thermal helium atoms from crystal surfaces is presented. The highly expanded He nozzle beam has an energy spread ΔE/E of about 1.4% and is collimated to 0.2°. The angle subtended by the detector...

  • Tertiary fusion neutron diagnostic for density-radius product and stability of inertial confinement fusion. Welch, D. R.; Kislev, H.; Miley, G. H. // Review of Scientific Instruments;Apr88, Vol. 59 Issue 4, p610 

    The fluence of high-energy (>14 MeV) "secondary" neutrons, produced in D-T reactions involving suprathermal fuel ions created by elastic scattering with 14-MeV "primary" neutrons, yields information about the fuel density-radius product (ρR) and the hydrodynamic stability of...

  • Absolute measurements of elastic-wave phase and group velocities in lossy materials. Fortunko, C. M.; Peterson, G. L.; Chick, B. B.; Renken, M. C.; Preis, A. L. // Review of Scientific Instruments;Jun92, Vol. 63 Issue 6, p3477 

    Traditional methods of determining phase and group velocities are often inadequate for many thick-section materials that exhibit greater than 30 dB, frequency-dependent propagation losses across the passband of the transducer. This article describes a measurement method that addresses this...

  • Application of a microscope to Brillouin scattering spectroscopy. Takagi, Yasunari; Kurihara, Kazuyuki // Review of Scientific Instruments;Dec1992, Vol. 63 Issue 12, p5552 

    In order to make a microscopic observation of the surface elastic wave on inhomogeneous opaque materials, an apparatus for Brillouin scattering spectroscopy was constructed utilizing a commercial microscope. An optical system which serves both as an inlet of a laser beam and as an outlet of the...

  • A novel resonant beam technique to determine the elastic moduli in dependence on orientation and temperature up to 2000 ?C Lins, W.; Kaindl, G.; PeterIlk, H.; Peterlik, H.; Kromp, K. // Review of Scientific Instruments;Jul99, Vol. 70 Issue 7, p3052 

    Reports on the development of an equipment to determine the elastic moduli from the resonance frequencies of the flexural vibrations of a beam. Description of the resonance frequency apparatus; Vibration detection and evaluation; Anisotropy of carbon-reinforced carbon composite.

  • Precise and direct determination of the elastic constants of a cylinder with a length equal to its diameter. Nieves, F. J.; Gascón, F.; Bayón, A. // Review of Scientific Instruments;Jun2000, Vol. 71 Issue 6 

    A cylinder made of a homogeneous isotropic material and with a length equal to its diameter is excited by axial percussion. Its axial displacement is detected by speckle interferometry. The two lowest frequencies, the first symmetric mode and first antisymmetric mode, are compared with the...

  • Nitinol Medical Devices. Pelton, A. R.; Duerig, T. W.; Berg, B.; D.Hodgson; Mertmann, M.; Mitchell, M.; Proft, J.; Wu, M.; Yang, J. // Advanced Materials & Processes;Oct2005, Vol. 163 Issue 10, p63 

    Explains the concepts of thermal deployment, elastic deployment, and constancy of stress temperature dependency as they relate to product design and performance of a Nitinol medical device, the Homer Mammalok. Shape memory of the Homer Mammalok; Propensity of the material; Description of the...

  • Automated resonant mechanical analyzer. Bonetti, E.; Campari, E. G.; Pasquini, L.; Savini, L. // Review of Scientific Instruments;Apr2001, Vol. 72 Issue 4, p2148 

    An automatic vibrating reed apparatus for internal friction and elastic modulus measurements in solids is described. The apparatus is equipped with a resistive heater for measurements up to 1400 K. A magnetic field (up to 250 kAt/m) is also available in the 300-1000 K range. Measurements as a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics