Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1985-04-25
1986-06-17
Myracle, Jerry W.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
73825, 73837, G01N 310
Patent
active
045949000
ABSTRACT:
Disclosed is a testing machine for testing specimens such as lumber which may have varying overall lengths. The testing machine includes the frame having an elongated longitudinal member which can be pivotally mounted with respect to stands. Two sets of transverse arms are connected to the longitudinal member at appropriate points. One set of transverse arms is pivotable. The transverse arms extend outwardly from the longitudinal member and have an extendible and contractible force member for increasing and decreasing the distance between the arms along one side of the frame. Jaw sets are pivotally mounted to the transverse arms opposite from the force member for engaging a specimen being tested. The jaw sets are preferably hydraulically closed, using the same hydraulic supply as used to extend the force member, thus automatically proportioning the gripping force of the jaws with relationship to the applied load to the specimen. The force member is provided with a load cell or other force transducer which continuously reads the force existing within the force member and applied to the test specimen. A closed loop feedback system compares the output of the forced transducer to a preprogrammed load function to provide a control signal used to adjust fluid supply to the force member and jaw sets.
REFERENCES:
patent: 2831342 (1958-04-01), Adler et al.
patent: 3487680 (1970-01-01), Eichenbrenner et al.
patent: 3530709 (1970-09-01), Nemeth
Eberle George F.
Galligan William L.
Pellerin Roy F.
Myracle Jerry W.
Washington State University Research Foundation, Inc.
LandOfFree
Axial load testing machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Axial load testing machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Axial load testing machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2267112