![]() ![]() Results show that the employed model is applicable to capture microstructural effects on fatigue behavior of PEEK.įatigue life estimation Fatigue modeling Polyether ether ketone (PEEK) Strain-life approach Structure–property relations Thermoplastics.Ĭopyright © 2015 Elsevier Ltd. PEEK also has a low coefficient of friction, making it a slick material easing. In the dynamic fatigue test, no titanium or PEEK specimens fractured. performance in fatigue strength, wear-resistance fatigue resistance. However, the plastic deformation was concentrated at the base of the abutment, unlike titanium it was concentrated at the internal connection of the implant. Based on the experimental strain-life results and the observed microstructure of fatigue specimens, a microstructure-sensitive fatigue model was used to predict the fatigue life of PEEK that includes both crack incubation and small crack growth regimes. Behera A, Dupare P, Thawre M and Ballal A (2019) Effect of fatigue loading on stiffness degradation, energy dissipation, and matrix cracking damage of CFRP ±45 3S composite laminate, Fatigue & Fracture of Engineering Materials & Structures, 10.1111/ffe.13065, 42:10, (2302-2314), Online publication date. PEEK abutments showed 56 less peak force and 25 less fracture displacement than titanium abutments. ![]() SEM analysis was also conducted on the fracture surface of fatigue specimens to observe microstructural inclusions that served as the crack incubation sites. The microstructure of PEEK was obtained using the optical and the scanning electron microscope (SEM) to determine the microstructural inclusion properties in PEEK specimen such as inclusion size, type, and nearest neighbor distance. The machinability will be influenced when the material properties change. The hardness and strength of PEEK can be further improved by introducing fiber reinforcements to meet the high-performance index of the aerospace industry. Predictions based on FatemiSocie criterion fall out of the factor-of. To obtain the cyclic behavior of PEEK, uniaxial fully-reversed strain-controlled fatigue tests were conducted at ambient temperature and at 0.02 mm/mm to 0.04 mm/mm strain amplitudes. Polyetheretherketone (PEEK) is a novel polymer material with excellent material properties. Multiaxial fatigue test were conducted on PEEK under four loading paths and several criteria were used for life prediction. Thus, it can be anticipated that when compared to other FDM printed thermoplastics, PEEK can deliver better fatigue resistance and fatigue life. Due to the versatility of its material properties, the semi-crystralline PEEK polymer has been increasingly adopted in a wide range of applications particularly as a biomaterial for orthopedic, trauma, and spinal implants. 101 also found maximum tensile, compression, and bending strength on FDM-based PEEK material, which is 108, 114, and 115 higher than FDM-based ABS material. In this study, the effects of microstructural inclusions on fatigue life of polyether ether ketone (PEEK) was investigated. The fatigue induced mechanical failure of PEEK was associated to the presence of microstructural defects and/or microstructural processing effects in PEEK moldings 5. ![]()
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