Measuring and testing – Specimen stress or strain – or testing by stress or strain... – In static structures
Patent
1986-12-15
1988-04-19
Levy, Stewart J.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
In static structures
G01M 500
Patent
active
047381353
ABSTRACT:
A method and apparatus for in situ drilling of a precise hole in an erected structural element and inserting in such hole in pressed-fit relationship a cylindrical strain gauge. A guide block is provided having a precision hole corresponding to the diameter of the hole desired in the structural element. The guide block has unthreaded bolt holes for attachment of the guide block to the structural element and guides a reamer to produce a precise hole in the structural element. The guide block also has threaded holes for advancing a push plate against a force-transmitting bushing which is insertable through the precision hole in the guide block into abutting relationship with an end face of a cylindrical strain gauge to force the gage into press-fit relationship with the precise hole in the erected structural element.
REFERENCES:
patent: 1962241 (1934-06-01), Hawkinson
patent: 2428201 (1947-09-01), Cannarili et al.
patent: 3661469 (1972-05-01), Leff et al.
patent: 4520039 (1985-07-01), Cellon et al.
patent: 4526044 (1985-07-01), Moser et al.
patent: 4530245 (1985-07-01), Jacobson
Boyle Bradley C.
Cadwell Lawrence O.
Schneider Paul T.
Levy Stewart J.
Raevis Robert R.
Ramsey Engineering Company
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