Title:
SYSTEM FOR PREVENTING ROTATOR FROM BURSTING DUE TO DEVELOPMENT OF CRACK
Document Type and Number:
Japanese Patent JPH1123426
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a system for preventing a rotator from bursting due to development of a crack suitably employed in rotary fatigue test. SOLUTION: The burst preventive system comprises a crack sensor being applied to a position of a rotator 1 where a crack is developed and broken upon occurrence of a crack to interrupt conduction of electricity, a bridge circuit being built in the crack sensor to vary the output upon breakage of the crack sensor, a driver 3 for turning the rotator 1, a transmitter 4 fixed to the turning part of the rotary driver 3 and transmitting the output from the bridge circuit, a receiver 6 for receiving the transmission signal from the transmitter 4, and controllers 7, 8 and 9 for stopping the rotary driver 3 upon detecting variation in the output from the bridge circuit, based on a transmission signal received by the receiver 6.
Inventors:
GOSHIMA YOSHIHISA
Application Number:
JP18358597A
Publication Date:
January 29, 1999
Filing Date:
July 09, 1997
Export Citation:
Assignee:
ISHIKAWAJIMA HARIMA HEAVY IND
International Classes:
G01M99/00; G01N27/20; (IPC1-7): G01M19/00; G01N27/20
Attorney, Agent or Firm:
Minoru Hotta (1 person outside)