000266039 001__ 266039
000266039 005__ 20190625174540.0
000266039 022__ $$a0142-1123
000266039 022__ $$a1879-3452
000266039 02470 $$a000463463600013$$2isi
000266039 0247_ $$a10.1016/j.ijfatigue.2019.02.010$$2doi
000266039 037__ $$aARTICLE
000266039 245__ $$aCreep effects on tension-tension fatigue behavior of angle-ply GFRP composite laminates
000266039 260__ $$c2019$$aOxford$$bELSEVIER SCI LTD
000266039 269__ $$a2019-06-01
000266039 336__ $$aJournal Articles
000266039 520__ $$aAngle-ply (+/- 45)(2s) glass/epoxy composite specimens have been subjected to pure creep and tension-tension constant amplitude fatigue loading interrupted at sigma(max), by creep intervals lasting for 2 or 48 h in order to examine the effects of creep loading on the fatigue response and vice versa. The specimens' behavior and damage status were continuously monitored during the experiments; strains were measured by a video extensometer, the self generated temperature on the specimens' surface was recorded by an infrared camera, while a digital camera with sufficient backlighting was used in order to capture the damage development in the translucent specimens throughout the experiment. Post-mortem photos were taken by a digital microscope for the analysis of the fracture surfaces. In comparison to continuous fatigue, applying the creep-fatigue loading pattern with a 2-h creep time at low stress levels had no effect on fatigue life. However, as the stress level increased, specimen stiffening occurred during creep loading because of the glass fiber realignment, which also decreased the internal friction, hysteresis loop area, and self-generated temperature, thus prolonging the fatigue life. The restoring of fatigue stiffness was greater at a creep time of 48h due to more creep strain, which led to more fiber realignment. However, the higher creep strain at high stress levels caused more creep damage and thus resulted in a shorter fatigue life. In addition, it was observed that the fatigue damage accelerated creep deformation.
000266039 650__ $$aEngineering, Mechanical
000266039 650__ $$aMaterials Science, Multidisciplinary
000266039 650__ $$aEngineering
000266039 650__ $$aMaterials Science
000266039 6531_ $$afatigue
000266039 6531_ $$acomposites
000266039 6531_ $$acreep
000266039 6531_ $$acreep-fatigue interaction
000266039 6531_ $$afatigue damage
000266039 6531_ $$astress ratio
000266039 6531_ $$adamage
000266039 6531_ $$afrequency
000266039 6531_ $$aperformance
000266039 6531_ $$astrength
000266039 6531_ $$agrowth
000266039 6531_ $$amodel
000266039 700__ $$aMovahedi-Rad, A. Vahid
000266039 700__ $$aKeller, Thomas$$0240002$$g121845
000266039 700__ $$aVassilopoulos, Anastasios P.$$0241999$$g172705
000266039 773__ $$tInternational Journal Of Fatigue$$q144-156$$j123
000266039 8560_ $$fthomas.keller@epfl.ch
000266039 909C0 $$zPasquier, Simon$$0252002$$yApproved$$pCCLAB$$xU10234$$mthomas.keller@epfl.ch
000266039 909CO $$pENAC$$ooai:infoscience.epfl.ch:266039$$particle
000266039 961__ $$apierre.devaud@epfl.ch
000266039 973__ $$aEPFL$$sPUBLISHED$$rREVIEWED
000266039 980__ $$aARTICLE
000266039 980__ $$aWoS
000266039 981__ $$aoverwrite