constant-load tests 中文意思是什麼
constant-load tests
解釋
定載試驗-
The main purpose of this paper is to study crack growth rate of a class of nonlinear viscoelastic materials under the condition of constant load and small - strain. in this paper : the new test program is raised by referencing the existing test programs and by our trial and error ; in the new test program, facilities involved in the nonlinear viscoelastic crack tests are relatively few, the test process is relatively simple and the data obtained from the experiments are credible. on this basic, the calculation of j integral of nonlinear viscoelastic double cantilever beams specimens and the parameter of fracture work of corresponding nonlinear viscoelasticity are derived
具體成果包括： 1 、證實了雙懸臂梁試件用於非線性粘彈性裂紋擴展實驗研究的優點：雙懸臂梁試件在實驗中能觀測到的擴展過程持續時間比較長，在計算j積分時，計算方法簡單； 2 、得到了改性聚丙烯材料用於非線性粘彈性裂紋擴展實驗的兩種有效的試件構形和相應的試件尺寸；採用不斷改善夾具的方法使得加載穩定； 3 、經過連續四個多月的時間得到了一組有用的實驗數據； 4 、得到了裂紋長度與時間的關系、裂紋擴展速度與時間的關系、裂紋擴展速度與裂紋長度的關系。 -
Corrosion of metals and alloys - stress corrosion testing - preparation and use of pre - cracked specimens for tests under constant load or constant displacement
金屬和合金的腐蝕.應力腐蝕試驗.恆定負荷或恆定位移條件下試驗用預破裂試樣的制備和使用 -
Constant amplitude reversed cyclic load tests were simulated with the aid of software msc / fatigue. fatigue life predictions can be made for this class of connection using relationships analogous to the well - known manson - coffin strain - life equation for metals
本文使用msc / fatigue軟體進行了常幅偏移下的性能分析，類似於著名的manson - coffin公式，建立了所研究節點的塑性轉角和壽命的關系。
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