Broadband electromechanical spectroscopy

摘要

An apparatus, method, and material wherein the material's viscoelastic and/or fatigue life may be altered by application of a secondary tuning electromagnetic field or a selected temperature, and the material's viscoelastic and/or fatigue properties are measured by a mechanical response of the material caused by applying a primary driving electromagnetic field.

主权项

1. An apparatus, comprising:
an electronic circuit for applying one or more secondary tuning electromagnetic fields to a specimen comprising a material, wherein one or more properties of the material are altered by the one or more secondary tuning electromagnetic fields; one or more electromagnetic coils for generating one or more primary driving electromagnetic fields that produce one or more mechanical responses of the specimen comprised of the material during application of the one or more secondary tuning electromagnetic fields, or a selected temperature, or the selected temperature and the one or more secondary tuning electromagnetic fields; a specimen grip for physically holding the specimen inside the apparatus, wherein the specimen grip electrically isolates the specimen from the apparatus while applying the one or more secondary tuning electromagnetic fields; a clamp for attaching a permanent magnet to the specimen, wherein;
the permanent magnet converts the applied one or more primary driving electromagnetic fields to one or more mechanical forces on the specimen,the one or more mechanical forces cause the one or more mechanical responses of the material in the specimen, andthe clamp is electrically isolated from the specimen; a detector positioned to receive a laser beam reflected from a mirror attached to the specimen to detect one or more specimen motions, a laser positioned to focus the laser beam on the mirror; and a vacuum chamber enclosing at least the material to enable measurement of the one or more mechanical responses under ambient pressures from atmospheric pressure (1000 mbar) down to a vacuum pressure; and wherein the one or more specimen motions result from the one or more mechanical responses and are used to measure the one or more properties of the material during application of the one or more secondary tuning electromagnetic fields, or the selected temperature, or the one or more secondary tuning electromagnetic fields and the selected temperature.