... internal flaws, resulting in lower than expected failure resistance or fatigue life. Multiple test bar batches using the Ti6Al4V alloy were fabricated by powder bed fusion (PBF) AM technique at different processing conditions. RUS and destructive tests, including tensile and fatigue tests, based on ASTM...

... Methodology under varying operating conditions and then provides a comparison to the widely used NASA/IMS bearing run-to-failure dataset. Laboratory experiments utilized a bearing test stand to capture failure states for fatigue and contamination failure mode. The fatigue and contamination failure procession...

... Abstract A fatigue test employing vibration-based fatigue known as the “Free-Free” has been in use inside the Turbine Engine Fatigue Facility (TEFF) of the Air Force Research Laboratory. The vibration-setup utilizes free boundary conditions by suspending a specimen on its nodal line that when...

... Abstract A new multiparameter model is proposed for the characterization of fatigue crack growth. The model assesses the combined effects of identifiable multiple variables that can contribute to fatigue crack growth. Mathematical expressions are presented for the determination of fatigue crack...

... level efficiently while maintaining the same accuracy. The structure level model heritages the characteristic of the transportation model at the material level model and correlates the material degradation with structure-level mechanical loading such as fatigue damage. The model is validated by UV...

... of functional fatigue. The curves are indeed observed to shrink in an axisymmetric way, due to the lack of phenomena to shift the curves along any of the axis. loading surface NiTi triply periodic minimal surface TPMS cyclic loading fatigue Proceedings of the ASME 2021 International Mechanical...

... coupling are threaded together to connect the sucker rod and form the rod string. The sucker rod string acts as the connecting link between the surface pumping unit and the subsurface rod pump. The loads generated from the reciprocating upstroke and downstroke motions could impose a risk of fatigue failure...

... Abstract This study investigates the application of electroless nickel deposition on additively manufactured stainless steel samples. Current additive manufacturing (AM) technologies produce metal components with a rough surface. Rough surfaces generally exhibit fatigue characteristics...

... Abstract The fatigue characterization of additively manufactured Ti-6Al-4V plays a vital role in ensuring the structural safety. This study focuses on image based surface characterization and the fatigue mechanical property investigation of as-built additively manufactured Ti-6Al-4V. Three sets...

... Abstract Additive manufacturing (AM) technologies are catching the interest day by day due to their ability to produce very complex shapes or geometries. Investigating the fracture and fatigue behavior of additively manufactured parts are essential not only to understand their mechanical...

... in this paper. blended wing body (BWB) stress analysis finite element analysis fatigue crack growth damage tolerance Proceedings of the ASME 2021 International Mechanical Engineering Congress and Exposition IMECE2021 November 1-5, 2021, Virtual, Online IMECE2021-73196 Damage Tolerance Analysis...

... Abstract The purpose of this study is to investigate the thermal and mechanical properties of L-PBF processed specimens at room and elevated temperatures while varying the loading conditions. The study covers finite element (FE) modeling of the tensile and fatigue behavior of the L-PBF...

... Abstract As part of an evaluation of plastic bead blasting as a means of removing paint from aircraft, fatigue testing was performed on bead blasted material. Typical military aircraft finishes were removed from 0.063 inch (1.6 mm) thick clad aluminum, corrosion resistant steel, and Ti-6Al-4V...

... Abstract To quantify the fatigue strength of bottom hole assembly (BHA) components used in high-bending drilling conditions, a multi-scale approach for fatigue analysis of BHAs was developed, which entails calculations at the BHA scale, the component scale, and the feature scale. At the BHA...

... Abstract In this paper, a hybrid computational framework that combines the state-of-the art machine learning algorithm (i.e., deep neural network) and nonlinear finite element analysis for efficient and accurate fatigue life prediction of rotary shouldered threaded connections is presented...

... Abstract The tensile and fatigue properties of laser-powder-bed-fusion (L-PBF) processed Ti-6Al-4V specimens are investigated at different loading conditions. Two types of as-built and post-machined L-PBF processed dogbone specimens are considered for the study, one is an ASTME8M round specimen...

..., it is essential to study the tensile and fatigue performance of these synthetic fibers in the presence of sea water. In this study, experiments were conducted to examine the effect of marine environment on Vectran (Liquid Crystal Polymer) yarns. The first set of experiments analyzed the tensile strength...

... Abstract Mean stress effects in pressurized steel blocks were examined under constant amplitude fatigue loading. The tests were performed to provide experimental data needed to study the effect of mean stress on fatigue lives of subject specimen, and to substantiate the use of analytical...

... Reversed bending fatigue tests to be performed on full scale assemblies, joined by interference fitting, are very complicated to set up, as well as very expensive to carry out, due to material costs and to low achievable testing frequencies. Moreover, along with the interference level...

... This research focuses on investigating the probabilistic fatigue crack growth models on W319 aluminum alloy which has vast applications in automotive parts products. The aim of this study is to determine the crack growth rate probabilistically and quantification of uncertainty of probabilistic...