System and method for testing shell and tube heat exchangers for defects
US9671373B2 · kind B2 · utility
1Cited by
6References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Sep 6, 2034 |
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.