Title:
TWO-AXIS LOAD TESTING APPARATUS
Document Type and Number:
Japanese Patent JP3731291
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To obtain a two-axis load testing apparatus by which a test can be made with high accuracy.
SOLUTION: A specimen 1 which is held by one pair of upper and lower pressure plates 19, 22 is loaded with an axial force by hydraulic cylinders 14A, (14B), 14C for vertical load. While the axial force is kept acting, the pair of upper and lower pressure plates 19, 22 are moved relatively by hydraulic cylinders 26A, 26B for horizontal load, and a shear force which is at right angles to the axial force is loaded repeatedly. At this time, own weights of the hydraulic cylinders 26A, 26B for horizontal load act on a point which is eccentric from the axial center of the upper pressure plate 19, and an imbalance is generated in the distribution of a compressive load. However, a load yoke 16 which supports the upper pressure plate 19 is supported by a prescribed pressure force by using respective balance cylinders 7A, 7B, and the imbalance of the compressive load is removed.
Inventors:
Komine, Noriaki
Yamada, Yoichi
Yamada, Yoichi
Application Number:
JP1997000146265
Publication Date:
October 21, 2005
Filing Date:
June 04, 1997
Export Citation:
Assignee:
SHIMADZU CORP
International Classes:
G01N3/34; G01N3/36; G01M7/00; G01N3/32; G01N3/32; G01M7/00; (IPC1-7): G01N3/34
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