...Samuel Onimpa Alfred; Mehdi Amiri With the increasing interest in adopting additively manufactured (AM) IN718 for high-temperature applications, driven by the design and manufacturing flexibility offered by AM technologies, understanding its fatigue performance is crucial before full-scale adoption...

...) technology, while the computational analysis covered the finite element (FE) modeling of the 3D-printed samples. The research focused on evaluating the tensile strength and fatigue resistance of the specimens printed in various orientations, alongside a detailed investigation of their fracture behavior...

... by manufacturers and those observed in practice, especially regarding fiber fraction—a crucial determinant of CFRP performance [ 2 ]. constitutive relations elastic behavior fatigue fracture mechanical behavior Graphical Abstract Figure 26 10 2023 20 05 2024 23 05 2024...

...-heat treatment on fatigue performance. In this study, we utilized two common heat treatment processes (450 °C anneal treatment and 1050 °C solution treatment) for 316L stainless steel and then discussed their influence on fatigue life and crack growth rate. It can be found that both the heat treatment...

...Gabriel Anichowski; Riley Damm; Ahmet Kahraman; Isaac Hong Tooth bending fatigue failure is a primary design concern for gear designers in power transmission applications. Fracture of a gear tooth in operation results in overload conditions to adjacent teeth, which cascades into potential failure...

...Gregory T. Whiteside; Pankaj Kumar; Tariq A. Khraishi; Abu-Bakar Siddique; Adam Brink This study investigates fatigue life and fracture in welded stainless steel 304L (SS 304L) resulting from load-controlled fatigue. This was done for specimens from two welding manufacturers. Mechanical testing...

...B. A. Rutherford; D. Z. Avery; B. J. Phillips; N. Zhu; S. C. Beck; L. N. Brewer; P. G. Allison; J. B. Jordon The effects of post-deposition heat treatment on the fatigue behavior of AA6061 processed by additive friction stir deposition (AFSD) were investigated for the first time in this work...

...Thomas Bouchenot; Kirtan Patel; Ali P. Gordon; Sachin Shinde While industrial gas turbine blades are commonly designed to resist creep and high-cycle fatigue (HCF) failure, the combination of these two loading conditions is seldom considered. The effect of creep damage elicited prior or concurrent...

... for the extension of the method to cover anisotropic yield surface materials. The application is carried out on steel tubes that have been axially compressed beforehand to create a bulge that acts as a stress concentration factor during the fatigue loading process. The ALO method is compared to the reference finite...

.... A thorough understanding of Fe–Co–2V’s fatigue performance is required to predict mechanical reliability under operating loads; however, limited fatigue data currently exist for Fe–Co alloys. This work characterizes the fatigue properties of wrought Fe–Co–2V through strain-controlled fatigue testing...

... did not exhibit any significant grain growth and demonstrated an increase in the average Vickers hardness in the repair compared with the wrought 7075-T651 control. Tensile and fatigue behavior was investigated for heat-treated repair and compared with the wrought AA7075-T651 control. The heat-treated...

..., fatigue, creep, and creep-fatigue tests at temperatures 550 to 760 ∘ C . The test results, failure mechanisms, and microstructures of diffusion bonded Alloy 800H are scrutinized and presented. Email: hpmahaja@ncsu.edu Email: lmaciel@ncsu.edu Email: thassan@ncsu.edu Contributed...

...Sha Xu; Hao Chen; Yali Yang; Kun Gao Three-dimensional (3D) reconstruction and finite element method are combined to study the damage behavior of aluminum alloy resistance spot-welded joints. Fatigue damage of spot-welded joints under different cyclic loading stages was obtained by X-ray...

... thermomechanical fatigue (TMF), a temperature-dependent crystal viscoplasticity (CVP) constitutive model is extended to include the effects of aging. The influence of aging in the CVP framework is captured through the addition of internal state variables that measure the widening of the γ channels and in-turn...

...Thomas Bouchenot; Calvin Cole; Ali P. Gordon; Casey Holycross; Ravi C. Penmetsa Next-generation, reusable hypersonic aircraft will be subjected to extreme environments that produce complex fatigue loads at high temperatures, reminiscent of the life-limiting thermal and mechanical loads present...

...Pham Quang Trung; Nay Win Khun; David Lee Butler Shot peening is well known as a surface deformation process which can induce compressive residual stresses into the subsurface of materials in order to improve the fatigue life. In this paper, the effects of the process conditions for both single...

...Renan L. Ribeiro; Michael R. Hill Cold expansion (CX) is a material processing technique that has been widely used in the aircraft industry to enhance fatigue life of structural components containing holes. CX introduces compressive hoop residual stresses that slow crack growth near the hole edge...

... of ASME for publication in the J OURNAL OF E NGINEERING M ATERIALS AND T ECHNOLOGY . Manuscript received June 6, 2016; final manuscript received January 11, 2017; published online March 27, 2017. Assoc. Editor: Huiling Duan. 06 06 2016 11 01 2017 Fatigue Fracture High-temperature...

...Ying Sun; George Z. Voyiadjis; Weiping Hu; Qingchun Meng; Yuanming Xu Hole cold expansion and bolt clamping force are usually applied to improve the fatigue performance of bolted joints. In order to investigate the effects of hole cold expansion and bolt clamping force and reveal the mechanism...

... of these materials. In this research, the microstructures of two cobalt-based Tribaloy alloys that are largely different in Si content are studied using scanning electron microscopy (SEM) with an EDAX energy dispersive X-ray (EDX) spectroscopy, and X-ray diffraction (XRD), fatigue strength under rotating-bending...