| 摘要 |
<p>Apparatus for a dynamic thermal-mechanical testing system that exhibits both self-resistive and self-inductive heating whenever a sufficiently large alternating (AC) electrical current is passed through the apparatus. In one embodiment, an oven (1800) is fabricated from a material which undergoes self-resistive heating to radiantly heat an internal volume of the oven. The oven also includes appropriately shaped heating sections (1830), which undergo self-resistive and self-inductive heating to compensate for heat losses into a support for the oven. In another embodiment, a metallic conductor (900, 900', 1425, 1600) is fabricated from a material which undergoes self-resistive heating and which contains appropriately shaped and sized heating sections (925, 925', 1440, 1445, 1620, 1625, 1630) such that each heating section undergoes self-inductive and self-resistive heating. Such a conductor is situated in various types of jaw assemblies (901, 901', 1420, 1420', 1650, 1650'). The conductor abuts againts and is in electrical contact with at least one end-face of a specimen. Whenever current is passed through the conductor, the heating sections will exhibit both self-resistive and self-inductive heating wherein the amount of heat generated through self-induction and propagating into one or more ends of the specimen can be set to produce controlled longitudinal temperature gradients along the specimen.</p> |
