試作高温引張圧縮動クリープ試験機と二,三の実験結果

概要

論文の詳細を見る
Details of a newly developed dynamic creep testing machine are presented. It has been designed to conduct research into dynamic creep and rupture properties of materials at elevated temperatures under the axial load ranging from the static tensile to the perfectly reversed alternating load. This machine is of the type that applies the static load to the specimen with a pair of coil springs and the alternating load with rotating eccentric masses. The capacity of the machine is as follows : Maximum static load 1 ton Maximum alternating load ±1 ton Alternating speed 1 800〜5 600 cpm Maximum test temperature 800℃ The static load is maintained constant automatically with microswitch and relay mechanism so that it is not influenced by the creep of specimen. The load (magnitude and wave form) can be observed in the cource of tests by means of a load measuring apparatus constructed with wire strain gauges. The specimens are heated by electric furnace and the temperature is controlled to be within ±1℃ by an automatic temperature controller. As the measuring apparatus of elongation of specimen is used the combination of dial gauge and dash-pot. Fatigue tests at a room temperature and dynamic creep tests at an elevated temperature (450℃) were made with regard to low carbon steel, using these apparatuses, and some of the results are presented. (Received May 26, 1958)
社団法人日本材料学会の論文
1958-10-15