Experimental investigation and modeling attempt on the effects of ultraviolet aging on the fatigue behavior of an LDPE semi-crystalline polymer

被引：21
|
作者：
Lamnii, H. [1 ]
Abdelaziz, M. Nait [1 ]
Ayoub, G. [2 ]
Colin, X. [3 ]
Maschke, U. [4 ]
机构：
[1] Univ Lille, UML EA 7512, Unite Mecan Lille, F-59000 Lille, France
[2] Univ Michigan, Dept Ind & Mfg Syst Engn, Dearborn, MI 48128 USA
[3] HESAM Univ, PIMM, Arts & Metiers Inst Technol, CNRS,CNAM, 151 Blvd Hop, F-75013 Paris, France
[4] Univ Lille, UMR8207, CNRS, Unite Mat & Transformat UMET, F-59000 Lille, France
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2021年 / 142卷
关键词：
Ultraviolet aging; Photo-degradation; Fatigue life; Semi-crystalline polymers; Damage; LOW-DENSITY POLYETHYLENE; DEGRADATION-INDUCED EMBRITTLEMENT; HIGH ENERGY RADIATION; MECHANICAL-PROPERTIES; LIFE PREDICTION; CRYSTAL CONTENT; KINETIC-MODEL; CROSS-LINKING; DAMAGE; FILMS;
D O I：
10.1016/j.ijfatigue.2020.105952
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The objective of this study was to investigate the effect of UV irradiation on the fatigue life of a bulk semi -crystalline polymer. Low-density polyethylene samples exposed to different UV irradiation doses were fatigue tested. Fatigue indicator based on dissipated energy per cycle was found to present the best correlation with the experimental fatigue results. A master curve unifying the experimental fatigue results for as-received and UV -aged materials was obtained when subtracting the dissipated energy threshold from the total dissipated energy. Finally, the evolution of the damage with cyclic loading was analyzed and preliminary modeling was attempted.
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页数：12
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