|Creep behavior and lifetime prediction of PMMA immersed in liquid scintillator|
|Zhou, F; Hou SJ(侯少静); Qian XH(钱小辉); Hou, SJ; Qian, XH; Chen, ZP; Zheng, CC; Xu, F
|摘要||The creep behavior of PMMA immersed in liquid scintillator at room temperature was experimentally studied with a new type of creep test machine. Both short-term and creep-rupture tensile tests at eight stress levels were performed. A master curve of creep compliance at a reference stress was obtained according to the Time-Stress Superposition Principle. The master curve was compared with the actual long-term creep curve. It demonstrates that the two curves coincide well at short times. However, the actual creep data shows a higher creep rate as time goes on. The actual lifetime is much shorter than that predicted by the master curve. Furthermore, the relationship between long-term creep limited strength and service life was determined. The results can be used to guide the safety design of PMMA vessels for application in a neutrino observatory. (C) 2016 Elsevier Ltd. All rights reserved.|
Time-Stress Superposition Principle
|关键词[WOS]||NONLINEAR VISCOELASTIC MATERIALS
; POLY(METHYL METHACRYLATE)
Zhou, F,Hou SJ,Qian XH,et al. Creep behavior and lifetime prediction of PMMA immersed in liquid scintillator[J]. POLYMER TESTING,2016,53:323.
Zhou, F.,侯少静.,钱小辉.,Hou, SJ.,Qian, XH.,...&Xu, F.(2016).Creep behavior and lifetime prediction of PMMA immersed in liquid scintillator.POLYMER TESTING,53,323.
Zhou, F,et al."Creep behavior and lifetime prediction of PMMA immersed in liquid scintillator".POLYMER TESTING 53(2016):323.