| 摘要 |
There is provided a blind fastener setting tool ( 12 ) which has a front end face ( 218 ) against which a blind fastener ( 14 ) is held during a conventional setting operation and which further has a piezo-electric thin film load measuring device ( 222 ) mounted on this front face so as to be disposed and compressed between the front face ( 218 ) and a flange ( 122 ) of the fastener ( 14 ) during the setting operation so as to record a low voltage electrical signal indicative of the load being exerted thereon. There is further provided a method of measuring such load during the setting of a blind fastener by positioning a piezo-electric thin film load measuring device between a setting tool and a fastener and subsequently measuring a low voltage signal created as a result of deformation of the piezo-electric thin film during the setting operation and analysing this signal as indicative of the load exerted on the fastener.
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