大型構造物試驗機と其の實驗價値に就て
1935 年 1935 巻 57 号 p. 33-45
詳細
1935 年 1935 巻 57 号 p. 33-45
A hydraulic testing machine for 3, 000 ton compression and 1, 500 ton tension tests was installed at the Kure Naval Dock Yard, in September 1934.
It is designed and constructed with the latest improvement to suit the testing of ship's structure, the same line with that installed in the “Material-Prüfungsamt” in Berlin-Dahlem.
The principal dimensions of the machine are as follow:-
Overall length of the machine when the tie spindles are moved outward. 28, 000mm
Extreme width of the machine. 4, 400"
Available stroke of ram at compression test. up to 400"
Available stroke of ram at tension test. up to 500"
Maximum length of compression test piece. 15, 100"
Maximum width of compression test piece. 2, 000"
Maximum length of tension test piece. 12, 100"
Maximum width of tension test piece. 2, 000"
Accuracy of the machine, denoting error 3% at 150 tons, is 1% for 300 tons and decreases to 0.15% at the maximum load for tension test.
The authors give a description about its mechanism and operation, and also on explaining the results of tests for riveted and welded joints, they point out the indispensable value for the model testing of complicated construction.
