System and method for testing shell and tube heat exchangers for defects
US10180411B2 · kind B2 · utility
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3References
16Claims
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Key dates
| Filing date | Apr 21, 2017 |
| Grant date | Jan 15, 2019 |
| Priority date | — |
| Expiry date | Apr 21, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetostrictive transducer assembly for generating a longitudinal elastic guided wave of a selected frequency and mode and for guiding the wave into an open end of a heat exchanger tube for testing the tube. The transducer assembly comprises a current-carrying coil of wire, a magnetostrictive material wrapped around the coil of wire, a mechanism for pressing the magnetostrictive material against an inner surface of the tube, and one or more biasing magnets placed in the vicinity of the current-carrying coil of wire and the magnetostrictive material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.