Title:
ボルト張力と荷重測定のための電磁音響トランスデューサ
Document Type and Number:
Japanese Patent JP3545410
Kind Code:
B2
Abstract:
A device for measuring a load on a part such as a bolt, comprises a socket having walls defining an interior space wherein the socket engages the bolt for transmitting a load to the bolt. An electromagnetic acoustic transducer comprising a magnet and a coil is located in the interior space of the socket near the bolt. The coil provides a current while the magnet provides a magnetic field such that the magnet and the coil generate an ultrasonic signal within the bolt. A detector is used to detect and measure a change in the ultrasonic signal at the bolt.
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Inventors:
Whalley, Hubert El.
Powers, thomas
McCrawlan, Daniel Tea.
Powers, thomas
McCrawlan, Daniel Tea.
Application Number:
JP52124295A
Publication Date:
July 21, 2004
Filing Date:
January 31, 1995
Export Citation:
Assignee:
McDermott Technology Incorporated
International Classes:
G01L5/00; F16B31/02; G01L1/25; G01L5/24; G01N29/04; G01N29/24; (IPC1-7): F16B31/02; G01L5/00
Domestic Patent References:
| JP21545A | ||||
| JP348109A |
Foreign References:
| US4846001 | ||||
| US5058439 |
Attorney, Agent or Firm:
Motohiro Kurauchi
Hiroshi Kazama
Hiroshi Kazama