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本文叙述了一低廉的电液伺服控制疲劳试验机,最大负荷容量为22.2千牛吨(5000磅力),伺服控制的最大应变为0.2/秒。它能在恒定应变率反馈下进行负荷及应变范围控制的疲劳试验。此外,该试验机能进行恒定应变率的拉力试验及闭环应力松弛试验。也介绍了某些初期疲劳试验的结果。
This article describes an inexpensive electro-hydraulic servo controlled fatigue tester with a maximum load capacity of 22.2 kN (5000 lbf) and a maximum servo-controlled strain of 0.2 / sec. It is capable of fatigue testing under load and strain range control with constant strain rate feedback. In addition, the test machine can perform constant strain rate tensile test and closed-loop stress relaxation test. The results of some initial fatigue tests are also introduced.